Relevant bibliographies by topics / Nitrophenol reduction

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Nitrophenol reduction'

Author: Grafiati
Published: 4 June 2021
Last updated: 19 June 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Nitrophenol reduction.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Nitrophenol reduction"

1

Macho, Vendelín, Milan Kučera, and Milan Králik. "Carbonylative Reduction of Nitrophenols to Aminophenols." Collection of Czechoslovak Chemical Communications 60, no. 3 (1995): 514–20. http://dx.doi.org/10.1135/cccc19950514.

Full text
Abstract:
Two- or three-component catalysts composed of (i) sulfur or sulfur compound (H2S, CS2, COS, Na2S), (ii) basic additive (triethylamine, CH3ONa, Na2S), and usually (iii) vanadium(V) compounds (e.g. NH4VO3) were found to catalyze efficiently the reaction of CO + H2O with isomeric nitrophenols to give the corresponding aminophenols. The reaction proceeds smoothly at 398 and 483 K and initial pressure of 7 MPa, and its rate increases from 2- to 4-nitrophenol. The selectivity to aminophenols exceeding 96 per cent was obtained at the water to nitrophenol molar ratio higher than 5. The solvents such as methanol and dioxane ensured better contact of the reactants, which was necessary for achievement of such a high selectivity. The effectiveness of the sulfur components (based on the S content) is expressed by the following sequence: S : CS2 : Na2S : H2 S : COS = 1 : 1.2 : 2.5 : 10 : 11. The reaction takes place also under the reduced CO pressure to 0.1 - 0.35 MPa. Formation of side products and mechanism of the reaction are discussed.
APA, Harvard, Vancouver, ISO, and other styles
2

Schenzle, Andreas, Hiltrud Lenke, Jim C. Spain, and Hans-Joachim Knackmuss. "Chemoselective Nitro Group Reduction and Reductive Dechlorination Initiate Degradation of 2-Chloro-5-Nitrophenol by Ralstonia eutropha JMP134." Applied and Environmental Microbiology 65, no. 6 (1999): 2317–23. http://dx.doi.org/10.1128/aem.65.6.2317-2323.1999.

Full text
Abstract:
ABSTRACT Ralstonia eutropha JMP134 utilizes 2-chloro-5-nitrophenol as a sole source of nitrogen, carbon, and energy. The initial steps for degradation of 2-chloro-5-nitrophenol are analogous to those of 3-nitrophenol degradation in R. eutropha JMP134. 2-Chloro-5-nitrophenol is initially reduced to 2-chloro-5-hydroxylaminophenol, which is subject to an enzymatic Bamberger rearrangement yielding 2-amino-5-chlorohydroquinone. The chlorine of 2-amino-5-chlorohydroquinone is removed by a reductive mechanism, and aminohydroquinone is formed. 2-Chloro-5-nitrophenol and 3-nitrophenol induce the expression of 3-nitrophenol nitroreductase, of 3-hydroxylaminophenol mutase, and of the dechlorinating activity. 3-Nitrophenol nitroreductase catalyzes chemoselective reduction of aromatic nitro groups to hydroxylamino groups in the presence of NADPH. 3-Nitrophenol nitroreductase is active with a variety of mono-, di-, and trinitroaromatic compounds, demonstrating a relaxed substrate specificity of the enzyme. Nitrosobenzene serves as a substrate for the enzyme and is converted faster than nitrobenzene.
APA, Harvard, Vancouver, ISO, and other styles
3

Gurevich, P., A. Oren, S. Sarig, and Y. Henis. "Reduction of Aromatic Nitro Compounds in Anaerobic Ecosystems." Water Science and Technology 27, no. 7-8 (1993): 89–96. http://dx.doi.org/10.2166/wst.1993.0538.

Full text
Abstract:
The moderately halophilic anaerobic eubacteria Haloanaerobiumpraevalens and Sporohalobactermarismortui are able to reduce p-nitrophenol and a variety of other nitrosubstituted aromatic compounds at a high rate to the corresponding amines. p-Nitrophenol was not incorporated by the cells or degraded to acid-volatile compounds. Other compounds transformed included nitrobenzene, o-nitrophenol, m-nitrophenol, nitroanilines, 2,4-dinitrophenol, and 2,4-dinitroaniline. Also sheep rumen fluid was found to transform p-nitrophenol and a number of other nitroaromatic compounds at a high rate. At least 50% of the p-nitrophenol transformed was recovered as p-aminophenol. The findings suggest that anaerobic transformation of nitroaromatic compounds may be widespread in the bacterial world.
APA, Harvard, Vancouver, ISO, and other styles
4

Tseng, Szu-Kung, and Chi-Jenn Yang. "The reaction characteristics of wastewater containing nitrophenol, treated using an anaerobic biological fluidized bed." Water Science and Technology 30, no. 12 (1994): 233–40. http://dx.doi.org/10.2166/wst.1994.0617.

Full text
Abstract:
An anaerobic biological fluidized bed was used to treat a synthetic wastewater containing three types of nitrophenols. The results proved that para-nitrophenol (p-NP) was the most toxic nitrophenol to methane producing bacteria while meta-nitrophenol (m-NP) was found to be less toxic, with ortho-nitrophenol (o-NP) being the least toxic to the methane bacteria. The results also showed that o-NP was much more easily decomposed by the microbes on the activated carbon biofilm. During the anaerobic digestion it was found that wastewater containing o-NP had the largest specific methane production rate, specific growth rate, and specific substrate utilization rate, while wastewater containing p-NP had the smallest rate figures. In addition, analyzing metabolites of the effluent indicated the anaerobic metabolism of m-NP started with a hydrogenation reduction, resulting in the production of m-aminophenol follwed by phenol after deamination.
APA, Harvard, Vancouver, ISO, and other styles
5

Le, Van Thuan, Ngoc Nhu Quynh Ngu, Tan Phat Chau, et al. "Silver and Gold Nanoparticles from Limnophila rugosa Leaves: Biosynthesis, Characterization, and Catalytic Activity in Reduction of Nitrophenols." Journal of Nanomaterials 2021 (May 20, 2021): 1–11. http://dx.doi.org/10.1155/2021/5571663.

Full text
Abstract:
This study describes a simple green method for the synthesis of Limnophila rugosa leaf-extract-capped silver and gold nanoparticles without using any expensive toxic reductant or stabilizer. The noble metal nanoparticles were characterized by Fourier transform infrared (FTIR) microscopy, powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray analysis (EDX), high-resolution transmission electron microscopy (HR-TEM), selected area electron diffraction (SAED), and dynamic light scattering (DLS) method. It has been found that the biosynthesized silver and gold nanoparticles are nearly spherical in shape with a mean particle size distribution of 87.5 nm and 122.8 nm, respectively. XRD and SAED patterns confirmed the crystalline nanostructure of the metal nanoparticles. FTIR spectra revealed the functional groups of biomolecules presented in the extract possibly responsible for reducing metallic ions and stabilizing formed nanoparticles. The biosynthesized metal nanoparticles have potential application in catalysis. Compared to previous reports, Limnophila rugosa leaf-extract-capped silver and gold nanoparticles exhibited a good catalytic activity in the reduction of several derivatives of nitrophenols including 1,4-dinitrobenzene, 2-nitrophenol, 3-nitrophenol, and 4-nitrophenol.
APA, Harvard, Vancouver, ISO, and other styles
6

Serrà, Albert, Raül Artal, Maria Pozo, Jaume Garcia-Amorós, and Elvira Gómez. "Simple Environmentally-Friendly Reduction of 4-Nitrophenol." Catalysts 10, no. 4 (2020): 458. http://dx.doi.org/10.3390/catal10040458.

Full text
Abstract:
The low molecular-mass organic compound 4-nitrophenol is involved in many chemical processes and is commonly present in soils and in surface and ground waters, thereby causing severe environmental impact and health risk. Several methods have been proposed for its transformation (bio and chemical degradation). However, these strategies not only produce equally or more toxic aromatic species but also require harsh operating conditions and/or time-consuming treatments. In this context, we report a comprehensive and systematic study of the electrochemical reduction of 4-nitrophenol as a viable alternative. We have explored the electrochemical reduction of this pollutant over different metallic and carbonaceous substrata. Specifically, we have focused on the use of gold and silver working electrodes since they combine a high electrocatalytic activity for 4-nitrophenol reduction and a low electrocatalytic capacity for hydrogen evolution. The influence of the pH, temperature, and applied potential have also been considered as crucial parameters in the overall optimization of the process. While acidic media and high temperatures favor the clean reduction of 4-nitrophenol to 4-aminophenol, the simultaneous hydrogen evolution is pernicious for this purpose. Herein, a simple and effective electrochemical method for the transformation of 4-nitrophenol into 4-aminophenol is proposed with virtually no undesired by-products.
APA, Harvard, Vancouver, ISO, and other styles
7

Krist, Pavel, Marek Kuzma, István F. Pelyvás, Pavla Simerská та Vladimír Křen. "Synthesis of 4-Nitrophenyl 2-Acetamido-2-deoxy-β-D-mannopyranoside and 4-Nitrophenyl 2-Acetamido-2-deoxy-α-D-mannopyranoside". Collection of Czechoslovak Chemical Communications 68, № 4 (2003): 801–11. http://dx.doi.org/10.1135/cccc20030801.

Full text
Abstract:
The title compounds were synthesized by the selective reduction of the azido group in 4-nitrophenyl 3,4,6-tri-O-acetyl-2-azido-2-deoxy-α-D-mannopyranoside (8) and 4-nitrophenyl 3,4,6-tri-O-acetyl-2-azido-2-deoxy-β-D-mannopyranoside (11), and by subsequent acetylation. Compound 8 was prepared by opening of the epoxide ring in methyl 2,3-anhydro-4,6-O-benzylidene-α-D-glucopyranoside (1) with sodium azide, followed by inversion of the configuration at C-3 in the resulting altropyranoside and glycosidation with 4-nitrophenol.
APA, Harvard, Vancouver, ISO, and other styles
8

Du, Chunbao, Yaowen Bai, Yuhang Shui, et al. "Carbon-Based Nanorod Catalysts for Nitrophenol Reduction." ACS Applied Nano Materials 2, no. 2 (2019): 879–89. http://dx.doi.org/10.1021/acsanm.8b02148.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Chen, Jie, Rong Ji Dai, Bin Tong, Sheng Yuan Xiao, and Weiwei Meng. "Reduction of 4-nitrophenol catalyzed by nitroreductase." Chinese Chemical Letters 18, no. 1 (2007): 10–12. http://dx.doi.org/10.1016/j.cclet.2006.11.009.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Chenouf, Meriem, Cristina Megías-Sayago, Fatima Ammari, Svetlana Ivanova, Miguel Ángel Centeno, and José Antonio Odriozola. "Montmorillonite-stabilized gold nanoparticles for nitrophenol reduction." Comptes Rendus Chimie 22, no. 9-10 (2019): 621–27. http://dx.doi.org/10.1016/j.crci.2019.07.005.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Nitrophenol reduction"

1

Al-Naji, Majd, Michael Goepel, Anca Roibu, and Roger Gläser. "Reduction of p-Nitrophenol to p-Aminophenol over supported monometallic catalysts as a model reaction for mass-transfer investigations: Reduction of p-Nitrophenol to p-Aminophenol over supportedmonometallic catalysts as a model reaction for mass-transferinvestigations." Diffusion fundamentals 24 (2015) 2, S. 1, 2015. https://ul.qucosa.de/id/qucosa%3A14515.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Al-Naji, Majd, Michael Goepel, Anca Roibu, and Roger Gläser. "Reduction of p-Nitrophenol to p-Aminophenol over supported monometallic catalysts as a model reaction for mass-transfer investigations." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-197993.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Wu, Zhibin, Xingzhong Yuan, Hua Zhong, et al. "Enhanced adsorptive removal of p-nitrophenol from water by aluminum metal–organic framework/reduced graphene oxide composite." NATURE PUBLISHING GROUP, 2016. http://hdl.handle.net/10150/614746.

Full text
Abstract:
In this study, the composite of aluminum metal-organic framework MIL-68(Al) and reduced graphene oxide (MA/RG) was synthesized via a one-step solvothermal method, and their performances for pnitrophenol (PNP) adsorption from aqueous solution were systematically investigated. The introduction of reduced graphene oxide (RG) into MIL-68(Al) (MA) significantly changes the morphologies of the MA and increases the surface area. The MA/RG-15% prepared at RG-to-MA mass ratio of 15% shows a PNP uptake rate 64% and 123% higher than MIL-68(Al) and reduced graphene oxide (RG), respectively. The hydrogen bond and pi-pi dispersion were considered to be the major driving force for the spontaneous and endothermic adsorption process for PNP removal. The adsorption kinetics, which was controlled by film-diffusion and intra-particle diffusion, was greatly influenced by solution pH, ionic strength, temperature and initial PNP concentration. The adsorption kinetics and isotherms can be well delineated using pseudo-second-order and Langmuir equations, respectively. The presence of phenol or isomeric nitrophenols in the solution had minimal influence on PNP adsorption by reusable MA/RG composite.
APA, Harvard, Vancouver, ISO, and other styles
4

Kwon, Beatsam. "Catalytic reduction of organic pollutants using supported metal nanoparticles." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23190/.

Full text
Abstract:
Metal nanoparticle catalysts have in the last decades been extensively researched for their enhanced performance compared to their bulk counterpart. Properties of nanoparticles can be controlled by modifying their size and shape as well as adding a support and stabilizing agent. In this study, preformed colloidal gold nanoparticles supported on activated carbon were tested on the reduction of 4-nitrophenol by NaBH4, a model reaction for evaluating catalytic activity of metal nanoparticles and one with high significance in the remediation of industrial wastewaters. Methods of wastewater remediation are reviewed, with case studies from literature on two major reactions, ozonation and reduction, displaying the synergistic effects observed with bimetallic and trimetallic catalysts, as well as the effects of differences in metal and support. Several methods of preparation of nanoparticles are discussed, in particular, the sol immobilization technique, which was used to prepare the supported nanoparticles in this study. Different characterization techniques used in this study to evaluate the materials and spectroscopic techniques to analyze catalytic activities of the catalyst are reviewed: ultraviolet-visible (UV-Vis) spectroscopy, dynamic light scattering (DLS) analysis, X-ray diffraction (XRD) analysis and transmission electron microscopy (TEM) imaging. Optimization of catalytic parameters was carried out through modifications in the reaction setup. The effects of the molar ratio of reactants, stirring, type and amount of stabilizing agent are explored. Another important factor of an effective catalyst is its reusability and long-term stability, which was examined with suggestions for further studies. Lastly, a biochar support was newly tested for its potential as a replacement for activated carbon.
APA, Harvard, Vancouver, ISO, and other styles
5

Poudyel, Ghimire Pramila. "DEVELOPMENT OF PHENOLIC RESIN-DERIVED CARBONS AND THEIR COMPOSITES WITH TAILORED COMPOSITION, POROSITY AND MORPHOLOGY." Kent State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent157384419976016.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Sandelier, Matthew James. "Tandem reduction/cyclization of o-nitrophenyl propargyl alcohols--a novel synthesis of 2- & 2,4-disubstituted quinolines and application to the synthesis of streptonigrin." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/8471.

Full text
Abstract:
Thesis (Ph. D.) -- University of Maryland, College Park, 2008.
Thesis research directed by: Dept. of Chemistry. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
APA, Harvard, Vancouver, ISO, and other styles
7

Soeira, Luciana Serra. "Estudo da degradação do p-nitrofenol por ferro de valência zero: avaliação de processos redutivos e oxidativos." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/46/46133/tde-30112007-113224/.

Full text
Abstract:
Neste trabalho estudou-se o uso do ferro de valência zero em meio redutivo e oxidativo, a fim de desenvolver um processo que promova tanto a degradação quanto a mineralização de substâncias orgânicas com centros deficientes de elétrons, como, por exemplo, espécies que contêm o grupo nitro ligado ao anel aromático. O processo de degradação empregando-se ferro metálico, em ambos os meios estudados, apresentou grande eficiência no tratamento do p-nitrofenol, utilizado como poluente modelo. Para soluções contendo concentração inicial de p-nitrofenol igual a 100 mg L-1, tanto para o meio redutivo quanto para o oxidativo, em condições ótimas, as taxas de degradação obtidas foram superiores a 98% ao final de 15 minutos de tratamento. Para o meio com atmosfera oxidante, foi possível observar a geração de H2O2 in situ (cerca de 0,030 mmol L-1, em 45 minutos), proporcionando uma reação do tipo Fenton. Dessa forma, foi possível obter uma redução do teor de carbono orgânico dissolvido de cerca de 20%, em 60 minutos de reação. A fim de elevar a taxa de mineralização do p-nitrofenol, realizou-se a integração dos processos redutivo e oxidativo. O emprego deste sistema de tratamento proporcionou um aumento de 100% na redução do teor de carbono orgânico dissolvido, para o mesmo tempo de tratamento. Assim, pode-se inferir que a associação dos processos estudados levou à formação de substâncias mais susceptíveis ao ataque de agentes oxidantes. Por fim, avaliou-se o emprego de ferro de valência zero sintetizado via redução de íons Fe2+ por boridreto de sódio. Utilizando-se o sistema de tratamento integrado, este material proporcionou uma taxa de mineralização de cerca de 50%, demonstrando-se como uma boa alternativa para a obtenção do ferro de valência zero. Dessa forma, pode-se concluir que o sistema integrado apresenta-se como uma alternativa viável e eficiente, com grande potencial de aplicabilidade para o tratamento de substâncias recalcitrantes aos processos de tratamento convencionais, uma vez que apresentou bons resultados na degradação/mineralização da substância modelo.
In this work, we studied the use of zero-valent iron under reductive and oxidative medium, in order to develop a process that promotes the degradation and the mineralization of organic substances with deficient electron centers, such as nitroaromatic compounds. In both mediums, the degradation process promoted by the metallic iron showed good efficiency to degrade p-itrophenol, used as pollutant model. For solutions of p-nitrophenol with initial concentration of 100 mg L-1, degradation percentages were above 98% after 15 minutes of the treatment in reductive and oxidative mediums (optimal conditions). Under oxidant atmosphere, the in situ generation of H2O2 (about 0,030 mmol L-1, in 45 minutes) leaded to a Fenton-like reaction. So, it provided a reduction of total organic carbon levels up to 20% in 60 minutes. In order to raise the mineralization of p-nitrophenol, the reductive and oxidative processes were integrated. The used of this treatment system provided an increase of 100% in the reduction of the dissolved organic carbon, for the same treatment time. Thus, we can in infer that the association of the two processes led to the formation of more susceptible substances to the attack of oxidant agents. Finally, it was evaluated the use zero-valent iron synthesized through reduction of Fe2+ ions by NaBH4. The obtained material provided about 50% of p-nitrophenol mineralization, showing to be a good source of zero-valent iron. So, it can be concluded that the use of the integrated system is a viable and efficient alternative, with a great potential of applicability for the treatment of recalcitrants substances to the conventional treatment processes, because it presented good results in the degradation/mineralization of studied pollutant model.
APA, Harvard, Vancouver, ISO, and other styles
8

Yeh, Yu-Lun, and 葉佑倫. "Nitrogen CNTs-Pt nanoparticles for Catalytic Reduction of 4-Nitrophenol (4-NP)." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/tb5k65.

Full text
Abstract:
碩士
國立臺灣科技大學
化學工程系
106
Heteroatom doping carbon materials can endow many properties. The improved features can be widely applied in different field. In this thesis, we follows our laboratory has previously developed an effective method to doping boron and nitrogen into the carbon nanotubes under atmospheric pressure, by controlling the temperature to achieve different levels of nitrogen content, and deposit the metal nanoparticles with high specific surface area and high activity on the tubes. The formation of nanocomposite as a catalyst to apply the reduction reaction of 4-nitrophenol(4-NP) to reduce the energy barrier of reaction. Because of synergy effect between the carbon materials and the metal nanoparticles can effectively and fast solve the problem of phenol pollution in waste water. This thesis is divided into the following parts, the Chapter 1 introduction of nanocomposite materials and the introduction of 4-NP reduction reaction and literature review, including the motivation, the experimental set up, the choice of synthesis methods, the improvement of the properties, the kinetics of the 4-NP; Chapter 2 are synthesis of nanocomposites, experimental procedures for the 4-NP reduction, and various instruments. In the Chapter 3, the analysis results of nanocomposite were analyzed by various instruments to obtain features such as morphology, size distribution, conductivity, etc., and this parts were extended to the Chapter 4; the performance of the various catalyst for the 4-NP reduction reaction. And the effect of the concentration of reactants and reducing agents; the final discussion of the application of nanocomposite in the reduction of phenols and the comparison of activity with references will be presented in Chapter 5.
APA, Harvard, Vancouver, ISO, and other styles
9

Lin, Ting Yi, and 林庭伊. "Synthesis of Fe3O4−Au nanocomposites and Application in 4-Nitrophenol Catalytic Reduction Reaction." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/72035744301585256462.

Full text
Abstract:
碩士
東海大學
化學系
99
There is great interest in the development of nanoparticles that combine multiple function or properties not obtainable in individual materials. Fe3O4 nanoparticles were initially prepared by co-precipitation method, and with the average diameter around 7 nm. And subsequently immobilization of Au seeds onto the Fe3O4 nanoparticles. The nanoparticle loading needs prevent aggregation. The surface of the Fe3O4 particles was modified with organosilane molecules to generate an amine terminated surface. Therefore Au can be immobilization by N−Au bonding. The as-prepared Fe3O4−Au nanocomposites that can combine with magnetic and catalytic properties in a single nanostructure. The effectiveness of the Fe3O4−Au nanocomposites as a solid phase heterogeneous catalyst has been evaluated on the well-known 4−Nitrophenol (4−NP) reduction to 4−Aminophenol (4−AP) in the presence of excess borohydride. It was observed that the rate constant, k, of the reaction increases with the increase in catalyst loading and catalyst dose, while decreases as the particle size increase. Moreover magnetic properties can be easily observed with isolated by an exterior magnet, which also showed magnetic recoverable catalytic activity for the reduction of 4−Nitrophenol with NaBH4. The catalyst efficiency was examined on the basis of turnover frequency (TOF) and recyclability. The as-prepared Fe3O4−Au nanocomposites are very efficient, stable, easy to prepare, eco-friendly, and cost-effective, and they have the potential for industrial applications.
APA, Harvard, Vancouver, ISO, and other styles
10

LAI, YI-HUSAN, and 賴宜璇. "Electroactive Polyamide Doped with Gold and Silver Applied to Catalytic Reduction of 4-Nitrophenol." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/5s9nfh.

Full text
Abstract:
碩士
弘光科技大學
化妝品應用研究所
106
Nitro-aromatics are the most common substance of the wastewater produced by farmers and industry. Among them, 4-nitrophenol tends to remain in the soil and water sources due to environmental stability and is not easily eliminated, and its toxicity can injure the central nervous system of a human and lead to neuropathy. Therefore, detecting and eliminating 4-nitrophenol has become an important work. There are some studies have researched biodegradable or adsorption method to eliminate 4-nitrophenol. In this study, the electroactive polymer - electroactive polyamide based on aniline oligomer was synthesis. And it's adsorption of gold and silver nanoparticles can increase its ability to conduct electrons, to perform as a catalyst and catalysis reduction of 4-nitrophenol. The structure and morphology of the samples were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM) and High Resolution X-ray Diffractometer (HRXRD). Ultraviolet–Visible spectroscopy (UV-Vis) observed electroactive polyamine composite catalytic reduction of 4-nitrophenol process. The results showed that the electroactive polyamide composite could catalyze the reduction of 4-nitrophenol, the electroactive polyamide-silver nanoparticles composite catalysis time was 3 minutes, and the electroactive polyamide-gold nanoparticles composite catalysis time was 7 minutes.
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Nitrophenol reduction"

1

Noh, Jihyang, and Reinout Meijboom. "Reduction of 4-Nitrophenol as a Model Reaction for Nanocatalysis." In Application of Nanotechnology in Water Research. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118939314.ch13.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Deka, Pangkita, Debajyoti Bhattacharjee, Pingal Sarmah, Ramesh C. Deka, and Pankaj Bharali. "Catalytic Reduction of Water Contaminant ‘4-Nitrophenol’ over Manganese Oxide Supported Ni Nanoparticles." In Trends in Asian Water Environmental Science and Technology. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-39259-2_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lin, Fang-hsin, and Ruey-an Doong. "Magnetically Recyclable Gold−Magnetite Nanocatalysts for Reduction of Nitrophenols." In ACS Symposium Series. American Chemical Society, 2013. http://dx.doi.org/10.1021/bk-2013-1124.ch016.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Shukla, Madhulata, and Indrajit Sinha. "Catalytic Activation of PVP-Stabilized Gold/Silver Cluster on p- Nitrophenol Reduction: A DFT." In Density Functional Calculations - Recent Progresses of Theory and Application. InTech, 2018. http://dx.doi.org/10.5772/intechopen.72097.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

R. Waghmode, Samadhan, Amol A. Dudhane, and Vaibhav P. Mhaindarkar. "Syzygium cumini Mediated Green Synthesis of Silver Nanoparticles for Reduction of 4-Nitrophenol and Assessment of its Antibacterial Activity." In Noble Metals and Intermetallic Compounds - Recent Advanced Studies and Applications [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98473.

Full text
Abstract:
The biosynthesis of silver nanoparticles (AgNPs) has become more significant in the recent years owing to its applications in catalysis, imaging, drug delivery, nano-device fabrication and in medicine. We propose the synthesis of silver nanoparticles from the plant extract of Syzygium cumini and evaluation of its antibacterial and chemocatalytic potential. Synthesis of AgNPs carried out by using aqueous silver nitrate. The UV–Vis absorption spectrum of the synthesized AgNPs showed a broad absorption peak at 470 nm. TEM analysis shows the morphology of AgNPs as a hexagonal matrix with average particle size is about 50 nm. XRD analysis displays the crystalline structure of AgNPs. The presence of elemental silver was confirmed with EDX analysis. FTIR analysis shows that amide groups present in proteins are dominant reducing agents and play an important role in the bioreduction of Ag+ ions to Ag0. The bioreduced AgNPs demonstrated significant catalytic properties in a reduction reaction of 4-nitrophenol to 4-aminophenol using NaBH4 in an aqueous condition. The biosynthesized AgNPs have potent antibacterial activity against common clinical pathogens. Considering the remarkable antibacterial activity against common pathogenic microorganisms, AgNPs can be used in the pharmaceutical industries.
APA, Harvard, Vancouver, ISO, and other styles
6

Albonetti, S., M. Blosi, F. Gatti, et al. "Microwave-assisted synthesis of Au, Ag and Au-Ag nanoparticles and their catalytic activities for the reduction of nitrophenol." In Scientific Bases for the Preparation of Heterogeneous Catalysts - Proceedings of the 10th International Symposium, Louvain-la-Neuve, Belgium, July 11-15, 2010. Elsevier, 2010. http://dx.doi.org/10.1016/s0167-2991(10)75122-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Ulrich, H. "Reductive Cyclization of 2-Nitrophenols." In Six-Membered Hetarenes with Two Unlike or More than Two Heteroatoms and Fully Unsaturated Larger-Ring Heterocycles. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-017-00102.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Tan, Noel Peter Bengzon, and Cheng Hao Lee. "Environment-Friendly Approach in the Synthesis of Metal/ Polymeric Nanocomposite Particles and Their Catalytic Activities on the Reduction of p-Nitrophenol to p-Aminophenol." In Green Chemical Processing and Synthesis. InTech, 2017. http://dx.doi.org/10.5772/intechopen.68388.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Meigh, J. P. K. "Reduction–Cyclodehydration of 2-(2-Nitrophenyl)benzophenones." In Six-Membered Hetarenes with Two Unlike or More than Two Heteroatoms and Fully Unsaturated Larger-Ring Heterocycles. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-017-01358.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Urleb, U., and S. Gobec. "Reductive Cyclization of -(2-Nitrophenyl)--phenylamines." In Six-Membered Hetarenes with Two Identical Heteroatoms. Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-016-01141.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Nitrophenol reduction"

1

Radoń, Adrian, Rafał Babilas, and Dariusz Łukowiec. "Reduction of Methylene Blue, Methyl Orange and 4-Nitrophenol Using Ag Nanoparticles." In The 4th World Congress on Recent Advances in Nanotechnology. Avestia Publishing, 2019. http://dx.doi.org/10.11159/icnnfc19.130.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Cai, Keying, and Yingmei Zhou. "Preparation of Cu/montmorillonite-chitosan and its catalytic activity for p-nitrophenol reduction." In ADVANCES IN ENERGY SCIENCE AND ENVIRONMENT ENGINEERING: Proceedings of the 2017 International Workshop on Advances in Energy Science and Environment Engineering (AESEE 2017). Author(s), 2017. http://dx.doi.org/10.1063/1.4979741.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Yazid, Hanani, Nurul Atikah Abdul Rahman, and Abdul Mutalib Md Jani. "Catalytic reduction of p-nitrophenol on Au/TiO2 powder and Au/TiO2 membrane." In 4TH INTERNATIONAL SCIENCES, TECHNOLOGY AND ENGINEERING CONFERENCE (ISTEC) 2020: Exploring Materials for the Future. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0043554.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Dhanavel, S., E. A. K. Nivethaa, G. Esther, V. Narayanan, and A. Stephen. "Synthesis of chitosan supported palladium nanoparticles and its catalytic activity towards 2-nitrophenol reduction." In DAE SOLID STATE PHYSICS SYMPOSIUM 2015. Author(s), 2016. http://dx.doi.org/10.1063/1.4947746.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Bakar, N. H. H. Abu, A. Ridzwan, W. L. Tan, M. Abu Bakar, and N. A. Sabri. "Kinetics of p-nitrophenol reduction by copper - porous silicon catalyst in the presence of KBH4." In ADVANCED MATERIALS ENGINEERING AND TECHNOLOGY V: International Conference on Advanced Material Engineering and Technology 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4981847.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Subalakshmi, K., K. Ashok Kumar, and J. Senthilselvan. "Reduction of 4-Nitrophenol using electrocatalytic ZnS nanoparticles for counter electrode application in dye-sensitized solar cells." In DAE SOLID STATE PHYSICS SYMPOSIUM 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4980681.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Chou, Chih Wei, and Hui-Hsuan Hsieh. "Synthesis of nature polymer supported Au, Ag and Au-Ag nanoparticles in aqueous medium and catalytic activity towards 4-nitrophenol reduction." In 2011 IEEE International Conference on Nano/Micro Engineered and Molecular Systems (NEMS). IEEE, 2011. http://dx.doi.org/10.1109/nems.2011.6017520.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Fujimoto, T., B. Djuricic, K. Tanoue, Y. Fukushima, and H. Yamazaki. "CHANGES IN ENZYMATIC ACTIVITIES IN BRAIN CAPILLARY ENDOTHELIAL CELLS INJURED BY PLATELET AGGREGATION IN VIVO." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643368.

Full text
Abstract:
We have reported cerebrovascular injuries induced by platelet aggregation in vivo. Appearance of vacuoles in endothelial cells and eventual deendothelialization are characteristic in large cerebral arteries (Stroke, 16:245, 1985). Minor changes are observed in brain capillaries, but disturbances of blood-brain barrier (BBB) are seen. To analyse changes in BBB, enzymatic activities in capillary endothelial cells before and after ADP-induced platelet aggregation in vivo were investigated.80 mg/kg of ADP was injected through a catheter into the right internal carotid artery of 32 rabbits. One hr later, right and left cortexes freed from pial membranes were homogenized and microvessels were isolated using discontinuous sucrose gradient ultracentrifugation. Purity of microvessel fraction was ascertained microscopically. The follwing enzymatic activities in these samples were measured.; cytochrome C oxydase (CCO), monoamine oxidase (MAO), p-nitrophenyl-phosphatase transferase (pNPPase, K-dependent component of Na, K-ATPase), gamma-glutamyl transferase (GT) and adenylate cyclase (AC). The enzymatic activities did not change after a vehicle-injection and did not show any differences between capillaries of both the cortexes before the ADP-injection. One hr after the ADP, GT and CCO activities decreased significantly in the capillaries of injection side. MAO activity also reduced without significance. The other enzymes did not show significant changes in their activities. Although pNPPase and AC which are associated with inner surface of plasma membrane were preserved well, activity of GT which is associated with outer portion of the membrane decreased significantly. It suggests superficial luminal injury and that plasma membrane might be affected from the side of vascular lumen. Reduced CCO activity suggests that disturbance in BBB is probably related to the increase in vesicular transportation and/or energy failure. Reduction of MAO activity indicates that damages to mitochondria exist in the capillaries. Cerebral blood vessels are prone to damage by released substances from activated platelet in vivo.
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography