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Journal articles on the topic 'UV-Vis spectroscopy'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

MASAGO, Hisashi. "UV/Vis spectroscopy." Journal of the Japan Society of Colour Material 78, no. 11 (2005): 531–38. http://dx.doi.org/10.4011/shikizai1937.78.531.

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2

Burgess, Chris. "UV-VIS spectroscopy." TrAC Trends in Analytical Chemistry 12, no. 7 (1993): x. http://dx.doi.org/10.1016/0165-9936(93)87010-u.

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3

Fernandes, C. D., D. Johnson, J. C. Bridges, and Monica M. Grady. "UV-Vis spectroscopy of stardust." International Journal of Astrobiology 5, no. 4 (2006): 287–93. http://dx.doi.org/10.1017/s1473550406003363.

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NASA's Stardust mission flew through the coma of comet Wild 2 in January 2004, capturing dust grains as it did so. The grains were returned safely to Earth in January 2006, and are in the process of being distributed to investigators. As members of the Spectroscopy Preliminary Examination Team, we are preparing to analyse Stardust grains. Our contribution is to measure the spectrum of the grains between 200 nm (in the near ultraviolet) and 800 nm (near infrared). The purpose of the measurement is to provide an additional technique for characterizing the grains, one that is complementary to oth

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4

G, Anusha, Venkatesh Prasad, and Nagaraj Gouda. "Determination of Saxagliptin Monohydrate by Derivatization UV-Vis Spectroscopy." International Journal of Science and Research (IJSR) 10, no. 11 (2021): 353–55. https://doi.org/10.21275/sr20610163533.

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5

Grinter, R. "UV-VIS spektroskopie und ihre anwendungen (UV-VIS spectroscopy and its appplications)." Spectrochimica Acta Part A: Molecular Spectroscopy 42, no. 11 (1986): 1333. http://dx.doi.org/10.1016/0584-8539(86)80237-9.

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6

Nurani, Laela Hayu, Citra Ariani Edityaningrum, Irnawati Irnawati, et al. "Chemometrics-Assisted UV-Vis Spectrophotometry for Quality Control of Pharmaceuticals: A Review." Indonesian Journal of Chemistry 23, no. 2 (2023): 542. http://dx.doi.org/10.22146/ijc.74329.

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Spectroscopic method in the UV-Vis region is considered the most molecular spectrometric method for content determination of a single component. However, a lot of pharmaceutical dosage forms comprise two or more components which lead to peak overlapping. Moreover, in the chemical stability test, active pharmaceutical ingredient (API) was also found along with the degradation products, impurities, and adulterant compounds. UV-Vis spectroscopy is one of the methods of choice for the determination or quantification of a single component in pharmaceutical preparations. The pharmaceutical products

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7

Pizarro, C., L. A. Sarabia, and J. López Palacios. "Multivariate calibration in UV-vis spectroscopy." Journal of Chemometrics 3, S1 (2005): 241–47. http://dx.doi.org/10.1002/cem.1180030515.

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8

Okretic, Stefano, and Norbert Nowack. "UV/VIS-spectroscopy of liquid slags." Steel Research 70, no. 8-9 (1999): 330–37. http://dx.doi.org/10.1002/srin.199905649.

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9

Chen, Zhenkun. "Application of UV-vis spectroscopy in the detection and analysis of substances." Transactions on Materials, Biotechnology and Life Sciences 3 (March 24, 2024): 131–36. http://dx.doi.org/10.62051/mw4daz69.

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Ultraviolet-visible (UV-vis) spectroscopy is a spectral measurement technique that relies on Lambert-Beer's law. Due to its user-friendly nature, rapid analytical capabilities, broad applicability, and non-destructive properties, it has gained significant prominence across various scientific disciplines. In the realm of environmental science, UV-vis spectroscopy can be employed for effectively detecting water quality by determining the concentration of heavy metals and related chemicals in water sources. Within the field of clinical medicine, UV-vis spectroscopy plays an indispensable role in

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10

Ranu, Chaturvedi and Swati Singh. "A REVIEW ON UV-VIS SPECTROSCOPY – THEORY & APPLICATIONS." International Journal of Management, Law & Science Studies, IJMLSS 02, no. 5 (2025): 1–8. https://doi.org/10.5281/zenodo.14584615.

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Ultraviolet and visible spectrometers have been in general use for the last 35 years end over this period have become the most important analytical instrument in the modernday laboratory. UV – Visible spectroscopy is useful as an analytical technique for two reasons; first , it can be used to identify some functional groups in molecules; secondly , it can be used for assaying . the second role is used to determine the content and the strength of a substance is very useful. Spectroscopic techniques emphatically UV – Visible spectroscopy is used to provide many answers in chemical an

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Vaishnavi, Khandarkar* T. J. Sharma Dr. Shivshankar Mhaske. "A Review on UV-Visible Spectroscopy." International Journal of Pharmaceutical Sciences 3, no. 2 (2025): 182–92. https://doi.org/10.5281/zenodo.14799582.

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The main goal of the review paper is to study the all detailed information about UV visible spectroscopy & its pharmaceutical applications. UV visible spectroscopy is a very useful method which is used in industry from long time ago. This is very simple and quick method. One of the earliest instrumental techniques for analysis is UV-VIS spectroscopy. Many different types of materials can be characterised using UV-Vis spectroscopy. The UV- Vis delivers details based on the degree of absorption or transmittance of a varied wavelength of beam light and the various responses of samples. Radian

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12

Dalal, Aditya, Animesh Mandal, Shubhada Adhi, and Kiran Adhi. "Study on integration of aluminum-doped zinc oxide (AZO) thin films with graphene oxide (GO)." International Journal of Modern Physics B 32, no. 19 (2018): 1840044. http://dx.doi.org/10.1142/s0217979218400441.

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Aluminum (0.5 at.%)-doped ZnO (AZO) thin films were deposited by pulsed laser deposition technique (PLD) in oxygen ambient of 10[Formula: see text] Torr. The deposited thin films were characterized by x-ray diffraction (XRD), photoluminescence (PL), Raman spectroscopy and uv–visible spectroscopy (UV–vis). Next, graphene oxide (GO) was synthesized by Hummers method and was characterized by XRD, UV–vis spectroscopy, Raman spectroscopy and transmission electron microscopy (TEM). Thereafter, GO solution was drop-casted on AZO thin films. These films were then characterized by Raman Spectroscopy, U

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13

Guo, Yuchen, Chunhong Liu, Rongke Ye, and Qingling Duan. "Advances on Water Quality Detection by UV-Vis Spectroscopy." Applied Sciences 10, no. 19 (2020): 6874. http://dx.doi.org/10.3390/app10196874.

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Water resources are closely linked to human productivity and life. Owing to the deteriorating water resources environment, accurate and rapid determination of the main water quality parameters has become a current research hotspot. Ultraviolet-visible (UV-Vis) spectroscopy offers an effective tool for qualitative analysis and quantitative detection of contaminants in a water environment. In this review, the principle and application of UV-Vis technology in water quality detection were studied. The principle of UV-Vis spectroscopy for detecting water quality parameters and the method of modelin

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14

Mäntele, Werner, and Erhan Deniz. "UV–VIS absorption spectroscopy: Lambert-Beer reloaded." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 173 (February 2017): 965–68. http://dx.doi.org/10.1016/j.saa.2016.09.037.

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15

Garrett DeYoung, H. "UV/VIS Spectroscopy: Something Old, Something New." Nature Biotechnology 5, no. 10 (1987): 1088–89. http://dx.doi.org/10.1038/nbt1087-1088.

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16

BJOERNLAND, T. "ChemInform Abstract: UV-VIS Spectroscopy of Carotenoids." ChemInform 28, no. 42 (2010): no. http://dx.doi.org/10.1002/chin.199742360.

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17

Jain, Bhavana, and Kishore Burade. "Synthesis, Formulation and Evaluation of Zinc Oxide Nanoparticle of Capparis zeylanica L. Stem." INTERNATIONAL JOURNAL OF DRUG DELIVERY TECHNOLOGY 14, no. 03 (2024): 1011–18. http://dx.doi.org/10.25258/ijddt.14.3.63.

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The current study’s focus is on using Capparis zeylanica L. stem extract to produce nanosized zinc oxide (ZnO) biologically in a way that is economical, effective, and environmentally safe. The synthesized nanoparticles were characterized using several techniques such as UV-Vis spectroscopy, TEM, FTIR and UV-vis spectroscopy. UV-vis spectroscopy ranges 200 to 400 nm. Having particle size 248 nm having zeta potential -3.5 mV with different groups. The current work examined by formation of gel, which shows good spreadability.

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18

Adnan, Adnan, Marcel Naumann, Daniel Mörlein, and Elke Pawelzik. "Reliable Discrimination of Green Coffee Beans Species: A Comparison of UV-Vis-Based Determination of Caffeine and Chlorogenic Acid with Non-Targeted Near-Infrared Spectroscopy." Foods 9, no. 6 (2020): 788. http://dx.doi.org/10.3390/foods9060788.

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Species adulteration is a common problem in the coffee trade. Several attempts have been made to differentiate among species. However, finding an applicable methodology that would consider the various aspects of adulteration remains a challenge. This study investigated an ultraviolet–visible (UV-Vis) spectroscopy-based determination of caffeine and chlorogenic acid contents, as well as the applicability of non-targeted near-infrared (NIR) spectroscopy, to discriminate between green coffee beans of the Coffea arabica (Arabica) and Coffea canephora (Robusta) species from Java Island, Indonesia.

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19

SUMAN, V., V. MORARI, L. GHIMPU, I. LUNGU, T. POTLOG, and V. OSOIANU. "Eco-Friendly Synthesis of Silver Nanoparticles by Chemical Reduction Method." Romanian Journal of Physics 70, no. 3-4 (2025): 607. https://doi.org/10.59277/romjphys.2025.70.607.

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Silver nanoparticles were prepared by chemical reduction method. Silver nitrate was taken as metal precursor, chondroitin sulfate as stabilizing agent and glucose as reducing agent. The formation of AgNPc was monitored by UV-VIS absorption spectroscopy. UV-VIS spectroscopy revealed the formation of AgNPc by showing typical surface plasmon absorption maxima at 420-429 nm in the UV-VIS spectrum. Comparison of theoretical (Mie light scattering theory) and experimental data showed that the diameter of AgNPc in colloidal solution is about 20 nm. X-ray diffraction (XRD), FTIR spectroscopy and UV-VIS

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20

Lähdetie, Anni, Tiina Liitiä, Tarja Tamminen, and Anna-Stiina Jääskeläinen. "Reflectance UV-vis and UV resonance Raman spectroscopy in characterization of kraft pulps." BioResources 4, no. 4 (2009): 1600–1619. http://dx.doi.org/10.15376/biores.4.4.1600-1619.

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Reflectance UV-Vis spectroscopy and UV resonance Raman (UVRR) spectroscopy are both nondestructive techniques that are applicable to study trace concentrations of lignin in-situ. In this study, unbleached and bleached softwood kraft pulps were analyzed by reflectance UV-Vis (k/s) and UVRR spectroscopy to follow lignin and hexenuronic acid (HexA) contents and structural changes in residual lignin. The height of the lignin band in the UV-Vis spectra (280 nm) correlated well with the lignin band in the UVRR spectra (1605 cm-1) for semi- or fully-bleached pulps. However, the correlation was much w

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21

Woo, Sanguk, Hyein Jung, and Yohan Yoon. "Real-Time UV/VIS Spectroscopy to Observe Photocatalytic Degradation." Catalysts 13, no. 4 (2023): 683. http://dx.doi.org/10.3390/catal13040683.

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In this work, we have developed a real-time UV/VIS spectroscopy method using a broadband Xenon Arc lamp to detect photocatalytic reactions in real time. A CMOS camera was used instead of an output slit to capture all spectral information simultaneously, which can enable a real-time detection of the UV/VIS absorption of the analytes within a single frame of the camera. To verify real-time spectroscopy, a wavelength calibration process was performed using three laser line filters and a didymium glass filter sample. To demonstrate that this real-time spectroscopic setup can be used for rapid meas

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22

Şener, Sevil. "Ball-Type Dioxy-o-Carborane Bridged Cobaltphthalocyanine: Synthesis, Characterization and DFT Studies For Dye-Sensitized Solar Cells as Photosensitizer." Heterocyclic Communications 26, no. 1 (2020): 37–45. http://dx.doi.org/10.1515/hc-2020-0007.

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AbstractThe synthesis and spectroscopic characterization of an innovative ball-type cobalt metallophthalocyanine 4, bridged by four 1,2-bis(2-hydroxymethyl)-O-carborane (HMOC) 1 units, has been achieved. The synthesized compound 4 was characterized structurally and electronically using elemental analysis, UV-Vis absorption spectroscopy, FT-IR spectroscopy, MALDI-TOF mass spectrometry, EPR spectroscopy and magnetic susceptibility. The photovoltaic performance of the newly synthesized compound in dye-sensitized solar cells was investigated. In order to clarify the effect of dye-sensitization tim

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23

Kusumiyati, Kusumiyati, Yuda Hadiwijaya, and Ine Elisa Putri. "Non-Destructive Classification of Fruits Based on Vis-nir Spectroscopy and Principal Component Analysis." Jurnal Biodjati 4, no. 1 (2019): 89–95. http://dx.doi.org/10.15575/biodjati.v4i1.4389.

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Fruits are one of the sources of nutrition needed for health. Fruit quality is generally assessed by physical and chemical properties. Measurement of fruit internal quality is usually done by destructive techniques. Ultraviolet, visible and near-infrared (UV-Vis-NIR) spec-troscopy is a non-destructive technique to measure fruit quality. This technique can rapidly measure the fruit quality, the measured fruit still remains intact, and can be marketed. Besides, UV-Vis-NIR spectrosco-py can also be used to classify fruits. The study aimed to classify var-ious types of fruits using UV-Vis-NIR spec

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24

Dwisaksana, Andryan, and Tukiran Tukiran. "ANALISIS SPEKTROSKOPI UV-VIS DAN FTIR SENYAWA HASIL ISOLASI DARI EKSTRAK DIKLOROMETANA KULIT BATANG TUMBUHAN JAMBU SEMARANG (SYZYGIUM SAMARANGENSE)." Unesa Journal of Chemistry 10, no. 2 (2021): 121–27. http://dx.doi.org/10.26740/ujc.v10n2.p121-127.

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Abstrak. Spektroskopi UV-vis dan FTIR merupakan salah satu teknik dalam penentuan struktur senyawa dari hasil isolasi. Penelitian ini bertujuan untuk menganalisis struktur senyawa hasil isolasi dari ekstrak diklorometana kulit batang tumbuhan Jambu Semarang menggunakan spektroskopi UV-Vis dan FTIR. Teknik isolasi senyawa yang dilakukan meliputi Kromatografi Lapis Tipis, Kromatografi Cair Vakum dan Kromatografi Kolom Gravitasi. Analisis struktur menggunakan spektroskopi UV-Vis didapatkan spektrum dengan puncak pada panjang gelombang maksimal 239 nm yang menunjukkan adanya eksitasi elektron dari

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25

DALACHE, CHERIFA, HADJ BENHEBAL, BEDHIAF BENRABAH, AEK AMMARI, ABDELMALEK KHARROUBI, and ABDELHAK LAKHAL. "CADMIUM-DOPED Co3O4 THIN FILMS: SYNTHESIS AND CHARACTERIZATION." Surface Review and Letters 26, no. 01 (2019): 1850134. http://dx.doi.org/10.1142/s0218625x18501342.

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This paper contains the results of the structural and spectroscopic characterizations of undoped and Cadmium-doped cobalt oxide thin films with different Co/Cd molar ratios (3%, 5%, 7% and 9%). The nanosized undoped and cadmium-doped Co3O4 thin layers were prepared using sol–gel process and deposited on glass substrates by dip coating. The changes caused by the incorporation of cadmium at different levels of doping have been highlighted by the techniques UV–Visible (UV–Vis) spectroscopy, Infrared (IR) spectroscopy, X-ray diffraction (XRD) measurements, SEM coupled EDX and impedance spectroscop

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26

Motan, Gabriela, and Aurel Puia. "Studies of different types of aspirin by spectrophotometric methods." Acta Chemica Iasi 22, no. 2 (2014): 155–64. http://dx.doi.org/10.2478/achi-2014-0013.

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Abstract Aspirin (acetylsalicylic acid) is an important anti-inflammatory and analgesic-pyretic drug. FTIR and UV-VIS spectroscopy were used in the present study. Using the FTIR spectroscopy and statistical data analysis the correlation between different types of aspirin was determined. The content of acetylsalicylic acid from the analysed samples was determined by the use of UV-VIS spectroscopy

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27

Rademann, K. "Photoelectron spectroscopy and UV/Vis-photoabsorption spectroscopy of isolated clusters." Zeitschrift f�r Physik D Atoms, Molecules and Clusters 19, no. 1-4 (1991): 161–64. http://dx.doi.org/10.1007/bf01448281.

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28

Isaac, R. S. Rimal, G. Sakthivel, and Ch Murthy. "Green Synthesis of Gold and Silver Nanoparticles UsingAverrhoa bilimbiFruit Extract." Journal of Nanotechnology 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/906592.

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We report on rapid one-step green synthesis of gold and silver nanoparticles using fruit extract ofAverrhoa bilimbi Linn. UV-Vis absorption spectroscopy was used to monitor the quantitative formation of gold and silver nanoparticles. The characteristics of the obtained gold and silver nanoparticles were studied using UV-Vis absorption spectroscopy (UV/Vis), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), and Energy-dispersive spectroscopy (EDX). UV/Vis spectrum showed Surface Plasmon Resonance (SPR) for both gold and silver nanoparticles at 540 and 420 nm. T

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29

Gomes, Luisa Larissa Arnaldo, Victor Sanctis, Huidong Dai, and Sanjeev Mukerjee. "Shedding Light on Lithium-Sulfur Battery Dynamics: Real-Time Insights through in-Situ UV-Vis Spectroscopy on Modified Lab Equipment." ECS Meeting Abstracts MA2024-01, no. 53 (2024): 2773. http://dx.doi.org/10.1149/ma2024-01532773mtgabs.

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In current post-lithium-ion research, the focus is directed toward Lithium-Sulfur (Li-S) batteries, motivated by their outstandingly high energy density (2640 Wh/kg) and the widespread availability of sulfur in the Earth's crust. Moreover, in-situ UV-Vis spectroscopy has proven to be instrumental, allowing for the real-time observation of alterations in the chemical composition of various battery components during operational cycles [1,2]. Our current study delves into the influence of solvent selection, particularly donor and acceptor numbers, in formulating gel polymer electrolytes for Lithi

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30

Monarumit, N., T. Lhuaamporn, D. Schwarz, P. Wathanakul, and W. Wongkokua. "An application of polychromatic UV-Vis-NIR spectroscopy on detection of beryllium treatment in ruby and yellow sapphire." Journal of Physics: Conference Series 2653, no. 1 (2023): 012011. http://dx.doi.org/10.1088/1742-6596/2653/1/012011.

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Abstract The ultraviolet-visible-near infrared (UV-Vis-NIR) spectroscopy has been essentially used to characterize gem materials and their treatments. The spectrophotometer was designed using a diffraction grating to provide the monochromatic light from a tungsten lamp in analyzing a sample. The signal is recorded by a photodiode, resulting in a characteristic spectrum of a gemstone sample. While the monochromatic UV-Vis-NIR spectrophotometer is used for characterizing treated ruby and yellow sapphire samples; however, some indicative characteristic absorptions could be missing. The technique

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31

Yang, Hai Qing, Wei Qiang Luo, and Wen Jing Wang. "Nondestructive Discrimination of Grape Seed Varieties Using UV-VIS-NIR Spectroscopy and Chemometrics." Applied Mechanics and Materials 236-237 (November 2012): 89–94. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.89.

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Classification of grape seed species is a useful tool to obtain seeds with desired quality traits. This study aimed at rapidly and nondestructively discriminating four varieties of grape seeds using ultra violet, visible and near infrared (UV-VIS-NIR) spectroscopy with wavelength range of 2101100 nm. A hundred twenty grape seed samples were divided for calibration (n=80) and validation (n=40). The spectra were subjected to a principal component analysis (PCA) with the leading 10 principal components (PCs) used to build calibration models. The obtained PCs were treated by linear discriminant a

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32

Huang, Jianyin, Christopher W. K. Chow, Zhining Shi, et al. "Stormwater monitoring using on-line UV-Vis spectroscopy." Environmental Science and Pollution Research 29, no. 13 (2021): 19530–39. http://dx.doi.org/10.1007/s11356-021-17056-7.

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33

Jin, Shiyun, Nathan D. Renfro, Aaron C. Palke, Troy Ardon, and Artitaya Homkrajae. "Application of UV-Vis-NIR Spectroscopy to Gemology." Gems & Gemology 60, no. 4 (2025): 456–73. https://doi.org/10.5741/gems.60.4.456.

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34

Moeur, Harriet P., Andrew Zanella, and Thomas Poon. "An Introduction to UV-Vis Spectroscopy Using Sunscreens." Journal of Chemical Education 83, no. 5 (2006): 769. http://dx.doi.org/10.1021/ed083p769.

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35

Felt, Deborah R., Steven L. Larson, and Edward J. Valente. "UV–VIS spectroscopy of 2,4,6-trinitrotoluene-hydroxide reaction." Chemosphere 49, no. 3 (2002): 287–95. http://dx.doi.org/10.1016/s0045-6535(02)00283-7.

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36

Antonov, Liudmil, and Stefan Stoyanov. "Noise Reduction in Second Derivative UV-Vis Spectroscopy." Spectroscopy Letters 29, no. 2 (1996): 231–39. http://dx.doi.org/10.1080/00387019608001599.

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37

Modic, Adam, Larisa Filip, and Vasko Jovanovski. "Determination of Gaseous H2O2 Using UV-Vis Spectroscopy." Chemosensors 13, no. 5 (2025): 157. https://doi.org/10.3390/chemosensors13050157.

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The detection of gases and volatile compounds remains a significant analytical challenge, particularly in terms of sensitivity and selectivity. Many situations require rapid, sensitive, and yet easy-to-operate methods for detecting gaseous hydrogen peroxide (H2O2) under ambient conditions. In this study, we present two novel methodologies for the real-time monitoring of gaseous H2O2 based on colorimetric reactions, which are quantitatively analysed using UV-vis spectrometry. The proposed methods demonstrate high sensitivity in the low mg m−3 range, with a broad linear response within the teste

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38

Maldonado-Luna, Nadja, Sonia Bailón-Ruiz, Myrna Reyes-Blas, and Oscar J. Perales-Perez. "Synthesis and characterization of Se-based nanoparticles as potential generators of reactive oxygen species." MRS Advances 4, no. 07 (2019): 419–24. http://dx.doi.org/10.1557/adv.2019.137.

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ABSTRACTThis work presents the synthesis of selenium-based nanoparticles via microwave-assisted heating and their subsequent characterization using UV-vis Spectroscopy (UV-Vis), high-resolution transmission electron microscopy (HRTEM), and energy-dispersive X-ray spectroscopy (EDX), techniques. Ongoing research includes the study of the nanoparticles capacity to generate reactive oxygen species (ROS).

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Fındık, Mükerrem, Asuman Uçar, and Emine Akgemci. "Spectroscopic analyses on the binding interaction of thiosemicarbazone-derivated Cu(II) complex with DNA/BSA." Celal Bayar Üniversitesi Fen Bilimleri Dergisi 17, no. 4 (2021): 387–95. https://doi.org/10.18466/cbayarfbe.902377.

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Cu(II) complex of 2-hydroxy-5-methoxyacetophenone-N(4)-ethyl thiosemicarbazone (Cu(HMAET)Cl) was synthesized and characterized by spectroscopic methods such as FT-IR, 1H-NMR and UV-Vis. The DNA-binding capacity of the complex was studied with the UV-Vis absorption titrations and ethidium bromide (EB) displacement experiments using E. coli DNA. The results demonstrated that the complex could intercalate in the DNA's base pairs. The binding constant was found as 3.6×108 M−1. Also, the interaction study of the complex with bovine serum albumin (BSA) was investigated using the UV-Vis absorption an

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40

Sharif, Mehwish, Sohail Chand, Syed Azhar Ali Shah Tirmazi, Umar Farooq, Muhammad Makshoof Athar, and Madeeha Batool. "Investigation and Discrimination of Ballpoint Pen Inks by Analytical Techniques and Chemometrics." International Journal of Analytical Chemistry 2022 (August 12, 2022): 1–13. http://dx.doi.org/10.1155/2022/7450539.

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A population study has been performed for Pakistani ballpoint pen inks of blue, black, red, and green colors (a total of four colors) commercially used in Pakistan. Ballpoint pen inks have been investigated and discriminated by using UV/Vis spectroscopy and FTIR spectroscopy. We have calculated and compared the results in terms of discriminating power (DP). The statistical techniques of principal component analysis and cluster analysis have been applied on obtained data. By visual comparison, the best DP is obtained for green ballpoint pen inks, i.e., 0.866 by using UV/Vis spectroscopy and FTI

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Todd, Clifford S., and Xiaoyun Chen. "Chemometric Evaluation of Ultraviolet–Visible (UV–Vis) Spectra for Characterization of Silver Nanowire Diameter and Yield." Applied Spectroscopy 74, no. 2 (2019): 204–9. http://dx.doi.org/10.1177/0003702819891060.

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The main tool used for routine screening of silver nanowire diameter and wire-to-particle yield is ultraviolet–visible (UV–Vis) spectroscopy. The normalized absorbance near 500 nm is generally taken to correlate with wire yield (lower absorbance means fewer particles and higher wire yield). The location of the UV–Vis peak near 375 nm is generally believed to correlate with wire diameter. These qualitative assessments are of unknown uncertainty. Improved microscopy-based analysis of wire diameter distribution and wire yield had recently been developed and were used to characterize synthesis pro

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42

Antonov, Liudmil, and Stefan Stoyanov. "Analysis of the Overlapping Bands in UV-Vis Absorption Spectroscopy." Applied Spectroscopy 47, no. 7 (1993): 1030–35. http://dx.doi.org/10.1366/0003702934415264.

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The analysis of the overlapped bands in UV-Vis absorption spectroscopy provides valuable information about the structure of the molecule and its environment. The resolution of individual bands in the UV-Vis region is a complicated task since the absorption bands are generally strongly overlapped, they have different half-band widths, and their number is difficult to estimate. In the present study the possibilities of using Levenberg's method for analysis of overlapping bands in UV-Vis spectroscopy are discussed, and a logical algorithm for their resolution is developed. This approach is applie

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43

Roy, Kanak, Subhadeep Saha, Biswajit Datta, Lovely Sarkar, and Mahendra Nath Roy. "Study on Host-Guest Inclusion Complexation of a Drug in Cucurbit [6]uril." Zeitschrift für Physikalische Chemie 232, no. 2 (2018): 281–93. http://dx.doi.org/10.1515/zpch-2017-0003.

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AbstractAssembly of pyridine-2-aldoxime drug with cucurbit [6]uril (CB[6]) has been investigated by1H-NMR and 2D-ROESY NMR, UV-Vis spectroscopy, FT-IR spectroscopy, surface tension and conductivity measurements in aqueous saline environment. The distinct cationic receptor feature and the cavity dimension of the CB[6] emphasize that the macro-cyclic host molecule remain as complex with the nerve stimulus drug molecule. The results obtained from surface tension and specific conductivity measurements suggest 1:1 inclusion complex formation between drug and CB[6]. The stability constant evaluated

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Suhandy, Diding, and Meinilwita Yulia. "Luwak Coffee Classification Using UV-Vis Spectroscopy Data: Comparison of Linear Discriminant Analysis and Support Vector Machine Methods." Aceh International Journal of Science and Technology 7, no. 2 (2018): 115–21. http://dx.doi.org/10.13170/aijst.7.2.8972.

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UV-Vis spectroscopy has been used as a promising method for coffee quality evaluation including in authentication of several high-economic coffee types. In this paper, we have compared the abilities of linear discriminant analysis (LDA) and support vector machines classification (SVMC) methods for Luwak coffee classification. UV-Vis spectral data of 50 samples of pure Luwak coffee and 50 samples of pure non-Luwak coffee were acquired using a UV-Vis spectrometer in transmittance mode. The results show that UV-Vis spectroscopy combined with LDA and SVMC was an effective method to classify Luwak

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Li, Tingting, Hongxia Yan, Tianye Liu, Chao Liu, and Zhengyan Chen. "Carbon Nanotubes Grafted with Hyperbranched Triazine Compounds." Nano 10, no. 01 (2015): 1550012. http://dx.doi.org/10.1142/s1793292015500125.

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In order to improve the dispersibility of carbon nanotubes (CNTs) in the resin matrix, CNTs grafted with hyperbranched triazine compound (HPTC–CNTs) was produced by four generations condensation reaction using cyanuric chloride and hexamethylenediamine. Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), UV-Vis spectroscopy (UV-Vis) and transmission electron microscopes (TEM) were used to characterize the obtained HPTC–CNTs. The FTIR, XPS, UV-Vis and TEM analysis showed that CNTs had been successfully grafted with HPTC. The TGA showed th

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Mai Hung Thanh, Tung, Dong Thanh Dong, Quoc Nguyen Tri, et al. "Synthesis of g-C3N4/InVO4 materials as novel photocatalysts for degradation of antibiotics under visible light." Vietnam Journal of Catalysis and Adsorption 10, no. 2 (2021): 49–53. http://dx.doi.org/10.51316/jca.2021.027.

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Novel g-C3N4/InVO4 materials were synthesized by a fabricated via hydrothermal and heating methods. The physicochemical properties of the photocatalysts were investigated by X-ray diffraction (XRD), infrared spectroscopy (IR), Photoluminescence spectroscopy (PL), UV-Vis diffuse reflectance spectroscopy (UV-Vis-DRS) and Energy dispersive X-ray spectroscopy (EDX). The photocatalytic performances were evaluated by degradation of tetracycline (TC). The g-C3N4/InVO4 composite at a weight ratio of 10 % exhibited the most excellent photocatalytic activity for TC degradation under visible irradiation

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Bielan, Zuzanna, Szymon Dudziak, Agnieszka Sulowska, Daniel Pelczarski, Jacek Ryl, and Anna Zielińska-Jurek. "Preparation and Characterization of Defective TiO2. The Effect of the Reaction Environment on Titanium Vacancies Formation." Materials 13, no. 12 (2020): 2763. http://dx.doi.org/10.3390/ma13122763.

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Among various methods of improving visible light activity of titanium(IV) oxide, the formation of defects and vacancies (both oxygen and titanium) in the crystal structure of TiO2 is an easy and relatively cheap alternative to improve the photocatalytic activity. In the presented work, visible light active defective TiO2 was obtained by the hydrothermal reaction in the presence of three different oxidizing agents: HIO3, H2O2, and HNO3. Further study on the effect of used oxidant and calcination temperature on the physicochemical and photocatalytic properties of defective TiO2 was performed. Ob

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Endo-Kimura, Maya, Marcin Janczarek, Zuzanna Bielan, et al. "Photocatalytic and Antimicrobial Properties of Ag2O/TiO2 Heterojunction." ChemEngineering 3, no. 1 (2019): 3. http://dx.doi.org/10.3390/chemengineering3010003.

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Ag2O/TiO2 heterojunctions were prepared by a simple method, i.e., the grinding of argentous oxide with six different titania photocatalysts. The physicochemical properties of the obtained photocatalysts were characterized by diffuse-reflectance spectroscopy (DRS), X-ray powder diffraction (XRD) and scanning transmission electron microscopy (STEM) with an energy dispersive X-ray spectroscopy (EDS). The photocatalytic activity was investigated for the oxidative decomposition of acetic acid and methanol dehydrogenation under UV/vis irradiation and for the oxidative decomposition of phenol and 2-p

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Li, Fen Fen, Hong Tao Gao, and Guang Jun Liu. "The Facile Hydrothermal Preparation of WO₃ and its Photocatalytic Performance under Visible-Light Irradiation." Advanced Materials Research 936 (June 2014): 347–51. http://dx.doi.org/10.4028/www.scientific.net/amr.936.347.

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The orthorhombic WO3 nanoplates were fabricated via a hydrothermal process, using HBF4 as the acid source. They were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-vis diffused reflectance spectroscopy (UV-Vis DRS), respectively. The WO3 nanoplates exhibited nice UV-light driven photocatalytic performance in the degradation of Rhodamine B (RhB).

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JEONG, MUN SEOK, CLARE C. BYEON, OK HWAN CHA, et al. "PURITY MEASUREMENT OF SINGLE-WALLED CARBON NANOTUBES BY UV-VIS-NIR ABSORPTION SPECTROSCOPY AND THERMOGRAVIMETRIC ANALYSIS." Nano 03, no. 02 (2008): 101–8. http://dx.doi.org/10.1142/s1793292008000885.

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We measured the content of single-walled carbon nanotubes (SWCNTs) in SWCNT soot within 3.7% error using UV-VIS-NIR absorption spectroscopy. We also propose a better overall evaluation method by combining thermogravimetic analysis with UV-VIS-NIR absorption spectroscopy to analyze the purity of SWCNT providing the accurate assessment of the amounts of noncarbonaceous impurity, carbonaceous impurity, and SWCNT each with respect to a highly purified reference.

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