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Artykuły w czasopismach na temat „Bismuth powder”

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Data publikacji: 3 czerwca 2025
Data aktualizacji: 31 lipca 2025

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1

Chen, Chin Yi, Jui Chung Weng, Jing Heng Chen, et al. "Preparation of Spray Pyrolyzed Bismuth Oxide and its Application in Inhibition of Ultraviolet from Light-Emitting Diode (LED)." Advanced Materials Research 509 (April 2012): 147–49. http://dx.doi.org/10.4028/www.scientific.net/amr.509.147.

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In the present study, bismuth oxide (Bi2O3) powders were prepared from bismuth nitrate at various temperatures by spray pyrolysis (SP). The Bi2O3 powder can convert from a monoclinic α phase to a tetragonal β phase at a pyrolysis temperature of > 600° C. The crystallinity of the SP powder increased with the increase of pyrolysis temperature. The resulting SP powders were then mixed with organics and screen-printed onto the surface of LED for the evaluation of ultraviolet (UV) inhibition. The β-type bismuth oxide powder pyrolyzed at 700°C exhibited a fine crystal structure. This caused the e
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2

Wang, En Guo, and Mei Xiang Huo. "The Photocatalytic Behavior of Bismuth Titanate Powders Prepared by the Citric-Combustion Method." Advanced Materials Research 726-731 (August 2013): 483–86. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.483.

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Bismuth titanate powders have been prepared by the citric-combustion method using bismuth nitrate and tetrabutyl titanate as the starting materials, and the effect of sintering temperature and the ratio of bismuth to titanium on their structure and photocatalytic activity was studied. The powders were characterized by X-ray diffractometry (XRD) and scanning electron microscopy (SEM). The photocatalytic properties of the samples were probed by using the methyl blue as simulated contaminants. The results showed that bismuth titanate powder prepared at 873K has the best photocatalytic activity.
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3

Knight, Kevin S. "The crystal structure of russellite; a re-determination using neutron powder diffraction of synthetic Bi2WO6." Mineralogical Magazine 56, no. 384 (1992): 399–409. http://dx.doi.org/10.1180/minmag.1992.056.384.13.

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AbstractThe crystal structure of the displacive ferroelectric mineral russellite, Bi2WO6, has been determined using Rietveld profile refinement of high-resolution, time of flight, neutron powder diffraction data on the synthetic compound. Russellite is orthorhombic, Pca21, with a 5.43726(2) Å, b 16.43018(5) Å, c 5.458422) Å, Z = 4 and is isostructural with the bismuth molybdate mineral koechlinite, Bi2MoO6. The structure consists of layers of tilted WO6 octahedra sandwiched between layers of bismuth and oxygen with the tungsten displaced from the centre of the octahedron by 0.278 Å. The orient
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4

Jaiban, Panupong, Ampika Rachakom, Suwapitcha Buntham, Sukanda Jiansirisomboon, and Anucha Watcharapasorn. "Fabrication of Bi0.5Na0.5ZrO3 Powder by Mixed Oxide Method." Materials Science Forum 695 (July 2011): 49–52. http://dx.doi.org/10.4028/www.scientific.net/msf.695.49.

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Lead-free bismuth sodium zirconate powder with formula Na0.5Bi0.5ZrO3 was prepared by conventional mixed oxide method. Bismuth sodium zirconate (BNZ) powder with 10wt%Na2CO3 was calcined at 800 °C for 2 h dwell time. Investigation of the effects of re-calcination and dwell time on phase formation of powders was also carried out. The results revealed that re-calcination significantly affected the formation of single-phase BNZ powder. Phase characteristics were checked by X-ray diffraction (XRD). Powder Cell software was employed to simulate crystal structure of BNZ powder. It was found that BNZ
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5

Pookmanee, Pusit, Sumintra Paosorn, and Sukon Phanichphant. "Chemical Synthesis and Characterization of Bismuth Vanadate Powder." Advanced Materials Research 93-94 (January 2010): 153–56. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.153.

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Bismuth vanadate powder was synthesized by a chemical co-precipitation method. Bismuth nitrate and ammonium vanadate were used as the starting precursors. The yellow precipitated powder was formed after adding ammonium hydroxide until the pH of final solution was 7. The powder was filtered and dried at 60 °C for 24h and calcined at 200-400 °C for 2h. The phase of bismuth vanadate powder was studied by X-ray diffraction (XRD). A single phase of monoclinic structure was obtained after calcinations at 200-400 °C for 2h. The morphology and particle size of bismuth vanadate powder were investigated
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6

Pookmanee, Pusit, Kanlaya Pingmuang, Wiyong Kangwansupamonkon, and Sukon Phanichphant. "Methylene Blue Degradation over Photocatalyst Bismuth Vanadate Powder Synthesized by the Hydrothermal Method." Advanced Materials Research 93-94 (January 2010): 177–80. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.177.

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Bismuth vanadate powder was synthesized by the hydrothermal method with bismuth nitrate and ammonium vanadate as the starting precursors with the mole ratio of bismuth and vanadium of 1:1. The mixed solution was adjusted with ammonium hydroxide until the pH of final solution was 7 and hydrothermally treated at 100 °C for 2-6h. The phase was studied by X-ray diffraction (XRD). Monoclinic structure was obtained after hydrothermal treated at 100 °C for 6h without calcination step. The morphology was investigated by scanning electron microscopy (SEM). The particle was needle-like in shape and high
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7

Patel, Ishverbhai, and Sneha Solanki. "XRD Studies of Synthesized Bi2S3Crystalline Materials." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C508. http://dx.doi.org/10.1107/s2053273314094911.

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Bismuth sulfide preparation and its x-ray diffraction studies are reported in this paper. The author have synthesized Bi2Sx (x = 3.15, 3.45) compound material with different sulfur content by conventional high temperature solid state solvothermal reaction of bismuth and sulfur which conforms that the (121) preferred orientation with crystallite size ~30 nm and splitting of peaks due to orthorhombic structure matches well with the standard data and demonstrate good crystalline quality and structural homogeneity of synthesized powder.This paper also describes the synthesis and x-ray diffraction
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8

Pookmanee, Pusit, Prakasit Intaphong, and Sukon Phanichphant. "The Characterization of Bismuth Vanadate Powder Synthesized by a Modified Microwave Method." Advanced Materials Research 1103 (May 2015): 85–90. http://dx.doi.org/10.4028/www.scientific.net/amr.1103.85.

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Bismuth vanadate (BiVO4) powder was synthesized by a modified microwave method. Bismuth nitrate pentahydrate, ammonium metavanadate and 2-propanol were used as the starting precursors. The final pH of solution was adjusted to 7 and irradiation power at 600 Watt for 2 and 6 min. The yellow powder was filtered and dried at 100 °C for 24h. The phase of BiVO4 powder was characterized by X-ray diffractometer (XRD). Multi-phase of monoclinic and tetragonal phase was obtained without calcination step. The morphology of BiVO4 powder was investigated by scanning electron microscope (SEM). The BiVO4 pow
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9

Phanmalee, Jitreephan, Prakasit Intaphong, Wiyong Kangwansupamonkon, Sukon Phanichphant, and Pusit Pookmanee. "The Photocatalytic Degradation of Methylene Blue Using Bismuth Vanadate (Bi2VO5.5) Powder." Key Engineering Materials 751 (August 2017): 707–12. http://dx.doi.org/10.4028/www.scientific.net/kem.751.707.

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Bismuth vanadate (Bi2VO5.5) powder has been successfully prepared by microwave method. Bismuth nitrate and ammonium vanadate were used as the starting precursors with the mole ratio of 2:1 in 2-propanol. The microwave power was 500 Watt for 2-6 min. The yellow powder was obtained and calcined at 500°C for 2h. The structure was identified by X-ray diffraction (XRD). The morphology was investigated by scanning electron microscopy (SEM). The chemical composition was determined by energy dispersive X-ray spectrometry (EDXS). The functional groups were investigated by fourier transform infrared spe
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10

Chen, May-Show, Hsiu-Na Lin, Yu-Chun Cheng, et al. "Effects of Milling Time, Zirconia Addition, and Storage Environment on the Radiopacity Performance of Mechanically Milled Bi2O3/ZrO2 Composite Powders." Materials 13, no. 3 (2020): 563. http://dx.doi.org/10.3390/ma13030563.

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Mineral trioxide aggregate (MTA) typically consists of Portland cement (75 wt.%), bismuth oxide (20 wt.%), and gypsum (5 wt.%) and is commonly used as endodontic cement. Bismuth oxide serving as the radiopacifying material reveals the canal filling effect after clinical treatment. In the present study, bismuth/zirconium oxide composite powder was prepared by high energy ball milling of (Bi2O3)100−x (ZrO2)x (x = 5, 10, 15, and 20 wt.%) powder mixture and used as the radiopacifiers within MTA. The crystalline phases of the as-milled powders were examined by the X-ray diffraction technique. The r
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11

Lazarević, Z. Ž., B. D. Stojanović, and José Arana Varela. "Mechanochemical Synthesis of Bi4Ti3O12." Materials Science Forum 518 (July 2006): 125–30. http://dx.doi.org/10.4028/www.scientific.net/msf.518.125.

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Our efforts were directed to the preparation of bismuth titanate – Bi4Ti3O12 (BIT) by mechanically assisted synthesis. The mechanical activation was applied to prepare bismuth titanate, Bi4Ti3O12, from bismuth oxide, Bi2O3, and titanium oxide, TiO2 (in an anatase crystal form). Mechanochemical synthesis was performed in a planetary ball mill in air atmosphere. Bismuth titanate ceramics was obtained by sintering at 1000 oC. The formation of Bi4Ti3O12 in the sintered samples was confirmed by X-ray diffraction analysis. Scanning electron microscopy, SEM, was used to study the particle size and po
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12

Wang, Xinxin, and Yifa Dong. "Studies on the Preparation and Photocatalytic Performance of Bismuth Ferrite." E3S Web of Conferences 245 (2021): 03078. http://dx.doi.org/10.1051/e3sconf/202124503078.

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Iron oxide and bismuth oxide powder are synthesized by the liquid phase precipitation method. Then a certain proportion of iron oxide, bismuth oxide and sodium chloride are mixed and ground to prepare the bismuth ferrite precursor by the molten salt method. The bismuth ferrite precursors are calcined at different temperatures to obtain bismuth ferrite photocatalyst. By studying the degradation performance of bismuth oxide, iron oxide and bismuth ferrite photocatalysts for methyl orange dyes, the best conditions for the degradation of methyl orange dyes by bismuth ferrite photocatalysts are fou
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13

Zhang, Dong. "Adsorption and Preconcentration Capabilities of Nano-Barium-Strontium Titanate Powder Coated by Dithizone for Trace Bismuth." Applied Mechanics and Materials 71-78 (July 2011): 3504–7. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.3504.

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A new method for the adsorption and preconcentration of bismuth in urine was described. The methodology combines determined using a hydride generation-atomic absorption spectrometry (HG-AAS) with pre-concentration and separation of the bismuth on the nano-barium-strontium titanate powder coated by dithizone (BST-dithizone). The experimental conditions for the pre-concentration and separation of the bismuth, including pH value of the medium, shaking time, eluent condition and co-existing ions have been investigated. The result showed that the bismuth in urine could be adsorbed on the BST-dithiz
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14

Ma, Chun Hong, Xue Lin, Liang Wang, and Yong Sheng Yan. "Sol-Gel Synthesis and Characterization of Nanocrystalline Bi4Ti3O12 Powders." Advanced Materials Research 997 (August 2014): 359–62. http://dx.doi.org/10.4028/www.scientific.net/amr.997.359.

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Nanocrystalline bismuth titanate (Bi4Ti3O12; BTO) powders were successfully prepared by the sol-gel method, using bismuth nitrate (Bi(NO3)3·5H2O) and tetrabutyl titanate (Ti(OC4H9)4) as source materials, acetic anhydride and ethanediol as solvents. The thermal decomposition and phase inversion process of the gel precursors were studied by using differential thermal analysis (DTA). The crystal structures and microstructures of BTO powders were investigated by using x-ray diffraction (XRD), and transmission electron microscope (TEM). The crystallization of amorphous bismuth titanate has been dis
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15

Szeremeta, Anna Z., Andrzej Molak, Sebastian Pawlus, Janusz Koperski, and Agnieszka Leonarska. "Electrical properties of epoxy-glue/(Bi12MnO20–BiMn2O5) composite." Journal of Composite Materials 52, no. 10 (2017): 1305–15. http://dx.doi.org/10.1177/0021998317724860.

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Electrical properties of composite consisted of epoxy-glue and powdered bismuth manganite Bi12MnO20–BiMn2O5 ceramics were studied. Samples contained 66 wt% of bismuth manganite. Secondary electron images and backscattered electron images were collected for the epoxy-glue and the epoxy-glue/bismuth manganite samples. Microanalysis shown that majority of bismuth manganite powder was homogenously distributed in epoxy-glue matrix. Lack of changes in crystallographic structure, in 300–450 K range, was deduced from the X-ray diffraction patterns. The electric impedance was measured at radio-frequenc
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16

Khosropour, Ahmad R., Mohammad M. Khodaei, and Kazem Ghozati. "Efficient, eco-Friendly and Regioselective Method for Thiolysis of 1,2-Epoxides with Diaryl Disulfides in the Presence of Zn/Bi(TFA)3-TBPB or Zn/Bi(OTf)3-TBPB." Zeitschrift für Naturforschung B 60, no. 5 (2005): 572–76. http://dx.doi.org/10.1515/znb-2005-0517.

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Diaryl disulfides undergo regioselective ring-opening of 1,2-epoxides in the presence of zinc powder and 3-4 mol-% of bismuth(III) trifluoroacetate or 1 mol-% of bismuth(III) triflate in molten tetrabutylphosphonium bromide (TBPB) to afford the corresponding β -hydroxy thioethers in good to excellent yields.
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17

Pookmanee, P., P. Longchin, W. Kangwansupamonkon, R. Puntharod, and S. Phanichphant. "Microwave-assisted Synthesis Bismuth Vanadate (BiVO4) Powder." Ferroelectrics 455, no. 1 (2013): 35–42. http://dx.doi.org/10.1080/00150193.2013.843414.

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18

Wang, Hao, JingBing Liu, ManKang Zhu, Bo Wang, and Hui Yan. "Hydrothermal synthesis of strontium bismuth tantalate powder." Materials Letters 57, no. 16-17 (2003): 2371–74. http://dx.doi.org/10.1016/s0167-577x(02)01237-5.

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19

Sheng, Jian Guo, and Yu Di Shan. "Study on Characterization and Preparetion of Bismuth Tungstate." Advanced Materials Research 988 (July 2014): 70–74. http://dx.doi.org/10.4028/www.scientific.net/amr.988.70.

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With the solvent of ethylene glycol, it is synthetized the bismuth tungstate(BWO) catalyst with controllable morphology. By using X ray powder diffraction(XRD) and the scanning electron microscope(SEM and TEM), the products are characterized. It is found that glycerol content can affect the morphology and structure of bismuth tungstate. The result is as follows: BWO is amorphous powder, and in front of the high temperature, it is a roasting scheelite layered structure, for nano single crystal phase. After high temperature roasting, it is changed into amorphous powder, and reunion. The oxidatio
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20

Pavlovic, Nikolina, Dejan Kancko, Mészáros Szécsényi, and Vladimir Srdic. "Synthesis and characterization of Ce and La modified bismuth titanate." Processing and Application of Ceramics 3, no. 1-2 (2009): 88–95. http://dx.doi.org/10.2298/pac0902088p.

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Bismuth titanate based nanopowders with the different content of La or Ce were synthesized by the modified sol-gel method. After calcination at 600?C, in addition to Aurivillius layered structure, a small quantity of cubic pyrochlore phase was detected in the La modified powders, while this second phase was much more pronounced in the Ce substituted powders. In fact, as the powder with the highest amount of Ce (Bi3CeTi3O12) has the pure pyrochlore phase it seems that the presence of Ce stabilizes the formation of this phase. This different influence of cerium and lanthanum could be explained b
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Sheng, Jian Guo, and Yu Di Shan. "Study on Characterization and Photocatalytic Properties of the Prepared Bismuth Phosphate." Applied Mechanics and Materials 409-410 (September 2013): 252–55. http://dx.doi.org/10.4028/www.scientific.net/amm.409-410.252.

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With the two solvothermal and hydrothermal method, synthetize the bismuth phosphate catalyst with controllable morphology. And study the photocatalytic activity which use methylene blue and methylene orange as probe. By using X ray powder diffraction(XRD) and the scanning electron microscope(SEM) the products were characterized. Study found that glycerol content can affect the morphology and structure of bismuth phosphate. In the photocatalytic reaction, MB concentration will affect the rate of reaction, and the bismuth phosphate addition also significantly affect the MO reaction rate.
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22

Mohamed, H. E. A., B. T. Sone, M. S. Dhlamini, and M. Maaza. "Bio-synthesis of BiVO4 Nanorods Using Extracts of Callistemon viminalis." MRS Advances 3, no. 42-43 (2018): 2479–86. http://dx.doi.org/10.1557/adv.2018.318.

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AbstractIn this contribution we report on the synthesis of n-type Bismuth vanadate (BiVO4) nanorods prepared via the use of aqueous extracts of Callistemon viminalis. X-ray diffraction analysis confirmed the formation of highly crystalline monoclinic BiVO4 nanorods post annealing of the Bismuth vanadate precursor powder at 500 °C. Scanning Electron Microscopy and High Resolution Transmission Electron Microscopy showed that BiVO4 nanorods have a high aspect ratio. Using UV-Vis absorption measurements the optical band gap of the nanorods is estimated to be 2.4 eV which makes the bio-synthesized
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23

Inaba, Katsuya, Ichiro Fujii, Kouichi Nakashima, et al. "Preparation of Grain-Oriented Ceramics with Bismuth Potassium Titanate-Barium Titanate and their Piezoelectric Properties." Key Engineering Materials 582 (September 2013): 80–83. http://dx.doi.org/10.4028/www.scientific.net/kem.582.80.

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Bismuth potassium titanate ((Bi1/2K1/2)TiO3: BKT) powder were prepared using bismuth oxide (Bi2O3), potassium hydrogen carbonate (KHCO3) and titanium oxide (TiO2) raw materials. Barium titanate (BaTiO3: BT) platelike particles oriented along [110] direction were used as template particles. Barium titanate-bismuth potassium titanate (BT-BKT) ceramics had a tetragonal phase at -100 °C. The main composition was fixed to BKT 30 molar% because the Curie temperature (TC) was well above 200 °C at BKT 30 molar%. The orientation of [110]-oriented BT-BKT ceramics (BKT 30 molar%) was 54.6 %.
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24

Smirnov, Andrey V., Ilya V. Sinev, Vyacheslav V. Simakov, Vladimir V. Kolesov, and Iren E. Kuznetsova. "Synthesis and Characterization of Thin Nanostructured Bismuth Doped Tin Oxide Films and Sensing Studies." Radioelectronics. Nanosystems. Information Technologies 12, no. 3 (2020): 349–60. http://dx.doi.org/10.17725/rensit.2020.12.349.

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The tin dioxide (SnO2) films doped with bismuth by means of magnetron sputtering of semiconductor two-phase target and powder BiO2 as source of Bi were produced. The effect of bismuth dope concentration variation on the microstructure, electrophysical and gas-sensing properties was investigated. It has been found, that films consist of crystalline rods with diameter of 21±2 nm and length of 120±10 nm. Bismuth doping provided decrease in signal timing drift of acetone sensor in analyzed probe. Sensitivity to acetone vapor of the sample derived from targets with 0.01% bismuth oxide concentration
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Astuti, Yayuk, Rizka Andianingrum, Abdul Haris, and Adi Darmawan. "The Role of H2C2O4 and Na2CO3 as Precipitating Agents on The Physichochemical Properties and Photocatalytic Activity of Bismuth Oxide." Open Chemistry 18, no. 1 (2020): 129–37. http://dx.doi.org/10.1515/chem-2020-0013.

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AbstractSynthesis of bismuth oxide synthesis through the precipitation method using H2C2O4 and Na2CO3 precipitating agents, identification of physicochemical properties and its photocatalysis activity for methyl orange degradation were conducted. The bismuth oxide synthesis was undertaken by dissolving Bi(NO3)3.5H2O in HNO3, then added precipitating agents to form precipitate. The results showed that bismuth oxide produced by H2C2O4 precipitating agent was a yellow powder containing a mixture of α-Bi2O3 (monoclinic) and β-Bi2O3 (tetragonal), porous with size of 28-85 μm. Meanwhile, the use of
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Shepelevich, Vasili G. "The structure of rapidly solidified foil of Al – Bi alloys." Journal of the Belarusian State University. Physics, no. 1 (January 28, 2022): 75–79. http://dx.doi.org/10.33581/2520-2243-2022-1-75-79.

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The results of study of the microstructure and texture of aluminum alloys, containing 0.12 and 0.25 at. % Bi, obtained with high-speed solidification, are presented (melt cooling rate liquid – not less 105 K /s). Texture (111) aluminum is formed in the rapidly solidified foils of investigated alloys and it is conserved under annealing at 523 K during 2 h. The average chord of bismuth sections does not exceed 0.05 µm. As the crystallisation front moves from surface A contacted with crystalliser to the surface B, the average size of dispersed bismuth particles increases. Foils of the alloys diss
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Timakova, E. V., T. E. Timakova, L. I. Afonina, et al. "Synthesis and study of bismuth(III) oxalates precipitated from mineral acid solutions." Журнал общей химии 93, no. 9 (2023): 1427–38. http://dx.doi.org/10.31857/s0044460x23090111.

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Bismuth oxalates of the compositions BiOH(C2O4), Bi2(C2O4)3·6H2O, Bi2(C2O4)3·7H2O, and Bi2(C2O4)3·8H2O were obtained by precipitation from bismuth solutions in perchloric, nitric, and hydrochloric acids with addition of oxalic acid. Compound compositions were confirmed by X-ray powder diffraction and chemical analysis, IR and Raman spectroscopy, and thermogravimetry. It has been shown that in the composition of bismuth(III) oxalate hydrates Bi2(C2O4)3· х H2O bismuth cation is coordinated by the oxygen atoms of carboxyl groups of oxalate ions and water molecules in the same way, and composition
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Alizadeh, M., K. Ahmadi, A. Maghsudipour, and F. Moztarzadeh. "Powder X-ray diffraction data of new bismuth yttrium gadolinium oxides." Powder Diffraction 23, no. 3 (2008): 255–58. http://dx.doi.org/10.1154/1.2957864.

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X-ray powder diffraction data for five new bismuth yttrium gadolinium oxide compounds synthesized by solid state reaction method are reported. The unit cell dimensions were determined from X-ray diffraction methods, using CuKα radiation, and evaluated by indexing programs. The cubic phase was the sole crystalline phase detected by X-ray diffraction analysis in Bi0.88Y0.06Gd0.06O1.5, Bi0.88Y0.08Gd0.04O1.5, Bi0.82Y0.09Gd0.09O1.5, Bi0.82Y0.12Gd0.06O1.5, and Bi0.82Y0.06Gd0.12O1.5 samples with lattice constants of a=5.5371(1) Å, a=5.5368(1) Å, a=5.5303(2) Å, a=5.53487(8) Å, and a=5.5279(1) Å, respe
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CHENG, JIN-BO, AI-DONG LI, QI-YUE SHAO, YUE-FENG TANG, and DI WU. "SYNTHESIS AND CHARACTERIZATION OF FERROELECTRIC NANOCRYSTAL POWDERS OF SrBi2Ta2O9 BY A POLYMERIZABLE COMPLEX METHOD." International Journal of Modern Physics B 19, no. 15n17 (2005): 2514–19. http://dx.doi.org/10.1142/s0217979205031249.

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Ferroelectric nanocrystal powders of SrBi2Ta2O9 (SBT) have been first prepared by a polymerizable complex (PC) route. The bismuth powder, strontium carbonate, and water-soluble tantalum oxalate solution were used as starting materials. Thermal analyses (TGA and DSC), x-ray diffraction (XRD), transmission electron microscopy (TEM), and conventional BET method were explored to characterize the structure, morphology, and specific surface area of PC-derived SBT powders calcined at 500-850 °C. As control samples, SBT powders were also fabricated by metalorganic decomposition (MOD) method. The XRD a
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Marinkovic-Stanojevica, Z., L. Mancic, T. Sreckovic, and B. Stojanovic. "Mechanochemical synthesis of bismuth ferrite." Journal of Mining and Metallurgy, Section B: Metallurgy 49, no. 1 (2013): 27–31. http://dx.doi.org/10.2298/jmmb120430039m.

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A powder mixture of Bi2O3 and Fe2O3 was mechanically treated in a planetary ball mill in an air from 30 to 720 minutes. It was shown that the mechanochemical formation of BiFeO3 (BFO) phase was initiated after 60 min and its amount increased gradually with increasing milling time. A detailed XRPD structural analysis is realized by Rietveld?s structure refinement method. The resulting lattice parameters, relative phase abundances, crystallite sizes and crystal lattice microstrains were determined as a function of milling time. Microstructural analysis showed a little difference in morphology of
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31

Lu, Chung-Hsin, and Susanta Kumar Saha. "Colloid Emulsion of Nanosized Strontium Bismuth Tantalate Powder." Journal of the American Ceramic Society 83, no. 5 (2004): 1320–22. http://dx.doi.org/10.1111/j.1151-2916.2000.tb01382.x.

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Jansanthea, Pongthep, Pusit Pookmanee, Sirirat Phaisansuthichol, et al. "BiVO4 Powder Synthesized via the Solvothermal Method." Advanced Materials Research 931-932 (May 2014): 157–61. http://dx.doi.org/10.4028/www.scientific.net/amr.931-932.157.

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Bismuth vanadate (BiVO4) powder was synthesized via the solvothermal method at 100200 °C for 26h by using acetic acid as solvent without calcination steps. The phase transition of BiVO4 powder was studied by Xray diffraction (XRD). The morphology and chemical composition of BiVO4 powder were investigated by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The functional groups of BiVO4 powder was identified by Fourier transform infrared spectroscopy (FTIR).
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Ploska, Ute, Georg Berger, and Manfred Willfahrt. "Dense Sintered Long-Term Stable Ceramics in the System CaO-P2O5-ZrO2-F." Key Engineering Materials 309-311 (May 2006): 267–70. http://dx.doi.org/10.4028/www.scientific.net/kem.309-311.267.

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The influence of several sinter additives (three glasses, magnesium acetate, bismuth trioxide) on the compressive strength and also on the solubility of a sintered ceramics, which is composed of 57.6Mol% CaO, 26.2Mol% P2O5, 10.4Mol% ZrO2 and 5.8Mol% CaF2 was tested. The amount of sinter additives, pre-mixing of the powders, pressure power, sintering temperature and sintering time were varied. The most dense samples were produced with the finest powders (D50 ~ 1/m) and the highest sintering temperatures (1200°C). The mechanical stability of the samples was more influenced by the particle size o
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Misiurev, Denis, Pavel Kaspar, and Vladimír Holcman. "Brief Theoretical Overview of Bi-Fe-O Based Thin Films." Materials 15, no. 24 (2022): 8719. http://dx.doi.org/10.3390/ma15248719.

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This paper will provide a brief overview of the unique multiferroic material Bismuth ferrite (BFO). Considering that Bismuth ferrite is a unique material which possesses both ferroelectric and magnetic properties at room temperature, the uniqueness of Bismuth ferrite material will be discussed. Fundamental properties of the material including electrical and ferromagnetic properties also will be mentioned in this paper. Electrical properties include characterization of basic parameters considering the electrical resistivity and leakage current. Ferromagnetic properties involve the description o
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Yang, Tzu-Sen, May-Show Chen, Cheng-Jyun Huang, et al. "A Novel Sol-Gel Bi2-xHfxO3+x/2 Radiopacifier for Mineral Trioxide Aggregates (MTA) as Dental Filling Materials." Applied Sciences 11, no. 16 (2021): 7292. http://dx.doi.org/10.3390/app11167292.

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Mineral trioxide aggregate (MTA) is well known as an effective root canal filling material for endodontics therapy. Within MTA, bismuth oxide (Bi2O3) serving as the radiopacifier still has biocompatibility concerns due to its mild cytotoxicity. In the present study, we tried to modify the Bi2O3 radiopacifier by doping hafnium ions via the sol-gel process and investigated the effects of different doping ratios (Bi2-xHfxO3+x/2, x = 0–0.3) and calcination temperatures (400–800 °C). We mixed various precursor mixtures of bismuth nitrate (Bi(NO3)3·5H2O) and hafnium sulfate (Hf(SO4)2) and controlled
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36

Shepelevich, V. G. "Structure of rapidly solidified alloys Al – (0.25 – 2.0) wt. % Bi." Physics and Chemistry of Materials Treatment 4 (2022): 32–36. http://dx.doi.org/10.30791/0015-3214-2022-4-32-36.

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The results of study of the microstructure and texture of aluminum alloys, containing 0.25 – 2.0 wt. % Bi, obtained with high speed solidification, are presented. A texture 111 aluminum is formed in the foils. The average chords of bismuth section does not exceed 0.5 μm. The size of dispersed bismuth particles and their number per unit volume of matrix depend on the distance from the foil surface. The specific surface of the aluminum-bismuth interface first increases and then increases as the crystallization front moves. The alloy foils dissolve in water at room temperature, forming hydrogen b
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Brankovic, Zorica, Danijela Lukovic-Golic, Aleksandar Radojkovic, et al. "Spark plasma sintering of hydrothermally synthesized bismuth ferrite." Processing and Application of Ceramics 10, no. 4 (2016): 257–64. http://dx.doi.org/10.2298/pac1604257b.

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Bismuth ferrite, BiFeO3 (BFO), powder was synthesized by hydrothermal method from Bi(NO3)3?5H2O and Fe(NO3)3?9H2O as precursors. The synthesized powder was further sintered using spark plasma sintering (SPS). The sintering conditions were optimized in order to achieve high density, minimal amount of secondary phases and improved ferroelectric andmagnetic properties. The optimal structure and properties were achieved after spark plasma sintering at 630?C for 20min, under uniaxial pressure of 90MPa. The composition, microstructure, ferroelectric and magnetic properties of the SPS samples were ch
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38

Voronin, I. A., S. V. Sotnichuk, I. V. Kolesnik, and K. S. Napolsky. "Application of Square-Wave Stripping Voltammetry for the Analysis of Electrodeposits Based on Lead-Bismuth." Èlektrohimiâ 60, no. 8 (2024): 530–38. https://doi.org/10.31857/s0424857024080013.

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The possibility of targeted electrodeposition of coatings in the lead-bismuth binary system is discussed. The analysis of metal content in electrodeposits was performed using square-wave stripping voltammetry of solutions simultaneously containing lead and bismuth. The obtained results were supported by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and powder X-ray diffraction analysis. The electrodeposition conditions of obtaining Pb7Bi3 ε-phase, which is promising for the application in superconducting microelectronics, were found.
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Liu, Xiao Chen, Bao Rang Li, and Li Wang. "The Controlled Powders Morphology of Bismuth Niobium Titanate Depending upon the Isothermal Annealing." Advanced Materials Research 683 (April 2013): 612–15. http://dx.doi.org/10.4028/www.scientific.net/amr.683.612.

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In order to investigate the effect of isothermal annealing on the powder morphology, Bi3NbTiO9 powders were first synthesized by molten salt method and then calcinated at different temperatures for different dwelling time. The microstructure observation revealed that the crystal morphology of Bi3NbTiO9 powder changed greatly with the prolonged dwelling time. The powders started to change from cube to sphere in shape with the dwelling time prolonged to 240min and then became cube again as the dwelling time was prolonged beyond 360min at 850oC. In addition to a time-dependent particle evolution
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40

Lazarevic, Zorica, B. D. Stojanovic, M. J. Romcevic, and N. Z. Romcevic. "Mechanochemical activation assisted synthesis of bismuth Layered-Perovskite Bi4Ti4O12." Science of Sintering 41, no. 1 (2009): 19–26. http://dx.doi.org/10.2298/sos0901019l.

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A powder mixture of Bi2O3 and TiO2, both monoclinic, was mechanochemically treated in a planetary ball mill in air atmosphere for different time, using zirconium balls as the milling medium. Mechanochemical reaction leads to the gradual formation of an amorphous phase. After 1 h of milling the starting oxides were transformed fully a nanocrystalline Bi4Ti4O12 phase. With increasing the milling time from 3 to 12h, the particle size of formed Bi4Ti3O12 did not reduced significantly. That was confirmed by IR and TEM analysis. The electron diffraction pattern indicates that Bi4Ti3O12 crystalline p
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41

Shepelevich, V. G. "Production of hydrogen by the interaction of rapidly hardened alloy foils from aluminum scrap and bismuth with water." Physics and Chemistry of Materials Treatment 3 (2024): 49–55. http://dx.doi.org/10.30791/0015-3214-2024-3-49-55.

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The results of study of the structure of rapidly solidified foils of an alloy made from of aluminum scrap (wire) alloyed up to 7.5 wt. % bismuth. An inhomogeneous structure of is formed during the crystallization. An inhomogeneous structure of the foils isformed during crystallization. The interaction of foils with water at room temperature and atmospheric pressure are accompanied by the evolution of hydrogen and a white powder consisting of Al2O3·3H2O and Al2O3·5H2O, and dispersed particles of bismuth.
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42

Lin, Hsiu-Na, May-Show Chen, Yu-Hsueh Chang, Pee-Yew Lee, and Chung-Kwei Lin. "Effect of Oxygen Concentration and Tantalum Addition on the Formation of High Temperature Bismuth Oxide Phase by Mechanochemical Reaction." Materials 12, no. 12 (2019): 1947. http://dx.doi.org/10.3390/ma12121947.

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High-temperature face-centered cubic bismuth oxide phase is a material of great interest given its unique properties. In the present study, α-Bi2O3 and tantalum powders were used as the starting powders for the formation of high-temperature bismuth oxide phase via mechanochemical synthesis by high energy ball milling. (Bi2O3)80(Ta)20 and (Bi2O3)95(Ta)5 in weight concentrations were milled in either an oxygen-free argon-filled glove box environment or an ambient atmosphere to investigate the effects of oxygen concentration and tantalum addition. The as-milled powders were examined using X-ray d
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43

Naz, S., M. Shahzad, A. H. Qureshi, et al. "INVESTIGATION OF PHASES DEVELOPED IN Bi4Ti3O12 SYSTEM BY THERMAL AND ANALYTICAL TECHNIQUES." Nucleus 48, no. 2 (2011): 101–6. https://doi.org/10.71330/thenucleus.2011.845.

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Bismuth titanate (Bi4Ti3O12) powders were prepared by conventional mixed oxide method using oxide mixture i.e. bismuth oxide (Bi2O3) and titanium oxide (TiO3). The mixed powders were ball milled for different times (8, 16, and 24h). The phase formation was investigated by X-ray diffraction (XRD) and results revealed that milled powder was mainly consisted of phases Bi2O3, TiO2 and small amount corresponded to Bi4Ti3O12. However, after calcination at 700ºC, Bi4Ti3O12 phase was mainly observed. Thermal decomposition behavior (DSC-TGA-DTA) was investigated as a function of milling time. Thermal
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Das, Prince Edwin, Amin F. Majdalawieh, Imad A. Abu-Yousef, Srinivasan Narasimhan, and Palmiro Poltronieri. "Use of A Hydroalcoholic Extract of Moringa oleifera Leaves for the Green Synthesis of Bismuth Nanoparticles and Evaluation of Their Anti-Microbial and Antioxidant Activities." Materials 13, no. 4 (2020): 876. http://dx.doi.org/10.3390/ma13040876.

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The employment of plant extracts in the synthesis of metal nanoparticles is a very attractive approach in the field of green synthesis. To benefit from the potential synergy between the biological activities of the Moringa oleifera and metallic bismuth, our study aimed to achieve a green synthesis of phytochemical encapsulated bismuth nanoparticles using a hydroalcoholic extract of M. oleifera leaves. The total phenolic content in the M. oleifera leaves extract used was 23.0 ± 0.3 mg gallic acid equivalent/g of dried M. oleifera leaves powder. The physical properties of the synthesized bismuth
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Inel, Y�ksel, and Durata Ertek (Haciu). "Photocatalytic deposition of bismuth(III) ions onto TiO2 powder." Journal of the Chemical Society, Faraday Transactions 89, no. 1 (1993): 129. http://dx.doi.org/10.1039/ft9938900129.

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Alizadeh, M., K. Ahmadi, and A. Maghsudipour. "Powder diffraction data of new bismuth yttrium gadolinium oxide, Bi1.8Y0.1Gd0.1O3." Powder Diffraction 25, no. 1 (2010): 75–76. http://dx.doi.org/10.1154/1.3308593.

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New bismuth yttrium gadolinium oxide, Bi1.8Y0.1Gd0.1O3, synthesized from a stoichiometric mixture of Bi2O3, Y2O3, and Gd2O3, was characterized by X-ray powder diffraction. The compound was determined to be tetragonal, with space group P421c (114), unit-cell parameters of a=7.793 08(29) and c=5.665 71(40) Å, and the number of formulas per unit cell Z=4. Bi1.8Y0.1Gd0.1O3 is isostructural with β-Bi2O3.
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Zanetti, S. M., M. G. S. Pereira, and Maria do Carmo de Andrade Nono. "Bismuth Zinc Niobate (Bi1.5ZnNb1.5O7) Nanopowder Derived from High Energy Mechanical Activation." Advances in Science and Technology 45 (October 2006): 315–20. http://dx.doi.org/10.4028/www.scientific.net/ast.45.315.

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Bismuth zinc niobate belongs to the pyrochlore-based microwave dielectrics, with high ε and low dielectric losses. This research reports the results obtained on the bismuth zinc niobate pyrochlore (Bi1.5ZnNb1.5O7 - α-BZN) synthesis by a mechanochemically assisted method. The mechanochemical activation allows reducing the particle size of the initial products, leading to an increase in the specific surface, improving in most cases its reactivity. The effects of changing the milling parameters (ball size, speed, and length of the mechanical treatment) are discussed. The obtained powders were cha
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Jin, Wei, Paul I. Laforest, Alex Luyima, Weldon Read, Luis Navarro, and Michael S. Moats. "Electrolytic recovery of bismuth and copper as a powder from acidic sulfate effluents using an emew® cell." RSC Advances 5, no. 62 (2015): 50372–78. http://dx.doi.org/10.1039/c5ra08318d.

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Abildina, Ainaz, Raigul Dzhumanova, Gulmira Rakhymbay, Assemay Beiseyeva, and Akmaral Argimbayeva. "Powder bismuth-based anode material for magnesium-ion batteries and its properties." Chemical Bulletin of Kazakh National University, no. 3 (September 22, 2021): 32–39. http://dx.doi.org/10.15328/cb1221.

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In this work an intercalation anode material synthesized on the base of the powdered bismuth is presented. The uniformly distribution of carbon paste suspension over the substrate surface was found out by scanning-electron microscopy. The regularities of electrochemical intercalation and deintercalation of magnesium ions into the electrode created on the base of powdered bismuth in a solution of 0.25 mol/L Mg(N(SO2CF3)2)2 on the base of acetonitrile were studied. The cyclic voltammograms with the results of scanning electron microscopy and atomic emission analysis indicate that in the cathode
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Zhong, Guo Qing, Rong Rong Jia, and Yu Qing Jia. "Solid-Solid Reaction Preparation for Nanoparticles of Bioinorganic Complex of Bismuth and Serine at Room Temperature." Advanced Materials Research 549 (July 2012): 292–96. http://dx.doi.org/10.4028/www.scientific.net/amr.549.292.

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Nanoparticles of the bioinorganic complex of bismuth and serine can be prepared very easily by a room temperature solid-solid reaction with the raw materials of bismuth triiodide and serine. The complex is characterized by elemental analysis, X-ray powder diffraction and transmission electron micrograph. The characterizations indicate that the composition of the complex is Bi[I(HOCH2CHNH2COO)]1.5. The crystal structure of the complex belongs to orthorhombic system with the lattice parameters: a = 0.8355 nm, b = 1.8688 nm and c = 2.2511 nm. The average diameter of the bioinorganic complex nanop
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