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1. One-pot green synthesis of silver/iron oxide composite nanoparticles for 4-nitrophenol reduction

Author:
Chiou, Jau-Rung; Lai, Bo-Hung; Hsu, Kai-Chih; Chen, Dong-Hwang
Source:
Journal of hazardous materials 2013 v.248-249 pp. 394-400
ISSN:
0304-3894
Subject:
p-nitrophenol,   etc   ; activation energy; aminophenols; aqueous solutions; catalysts; catalytic activity; iron oxides; nanoparticles; nanosilver; pH; reducing agents; silver; temperature;     Show all 13 Subjects
Abstract:
... Silver/iron oxide composite nanoparticles have been synthesized successfully via a facile one-pot green route by the use of l-arginine, which created an aqueous solution of about pH 10 and acted as a reducing agent for the successive formation of iron oxide and Ag nanoparticles. The product was characterized to be silver-coated iron oxide and iron oxide hydroxide composite nanoparticles with a mea ...
DOI:
10.1016/j.jhazmat.2013.01.030

2. Defect-meditated efficient catalytic activity toward p-nitrophenol reduction: A case study of nitrogen doped calcium niobate system

Author:
Su, Yiguo; Huang, Shushu; Wang, Tingting; Peng, Liman; Wang, Xiaojing
Source:
Journal of hazardous materials 2015 v.295 pp. 119-126
ISSN:
0304-3894
Subject:
p-nitrophenol,   etc   ; X-ray photoelectron spectroscopy; calcium; case studies; catalysts; catalytic activity; irradiation; nanoparticles; nitrogen; nitrogen content; oxygen; ultraviolet radiation;     Show all 12 Subjects
Abstract:
... This work reported on the synthesis of a series of nitrogen doped Ca2Nb2O7 with tunable nitrogen content that were found to be efficient and green noble-metal-free catalysts toward catalytic reduction of p-nitrophenol. XPS and ESR results indicated that the introduction of nitrogen in Ca2Nb2O7 gave rise to a large number of defective nitrogen and oxygen species. Defective nitrogen and oxygen speci ...
DOI:
10.1016/j.jhazmat.2015.04.036

3. Boosting catalytic activity of metal nanoparticles for 4-nitrophenol reduction: Modification of metal naoparticles with poly(diallyldimethylammonium chloride)

Author:
You, Jyun-Guo; Shanmugam, Chandirasekar; Liu, Yao-Wen; Yu, Cheng-Ju; Tseng, Wei-Lung
Source:
Journal of hazardous materials 2016
ISSN:
0304-3894
Subject:
p-nitrophenol,   etc   ; catalysts; catalytic activity; electrostatic interactions; hydrogenation; ions; ligands; nanoparticles; pH; palladium; particle size; platinum;     Show all 12 Subjects
Abstract:
... Most of the previously reported studies have focused on the change in the size, morphology, and composition of metal nanocatalysts for improving their catalytic activity. Herein, we report poly(diallyldimethylammonium chloride) [PDDA]-stabilized nanoparticles (NPs) of platinum (Pt) and palladium (Pd) as highly active and efficient catalysts for hydrogenation of 4-nitrophenol (4-NP) in the presence ...
DOI:
10.1016/j.jhazmat.2016.11.007

4. Highly efficient degradation of 4-nitrophenol over the catalyst of Mn2O3/AC by microwave catalytic oxidation degradation method

Author:
Yin, Cheng; Cai, Jinjun; Gao, Lingfei; Yin, Jingya; Zhou, Jicheng
Source:
Journal of hazardous materials 2016 v.305 pp. 15-20
ISSN:
0304-3894
Subject:
p-nitrophenol,   etc   ; activated carbon; catalysts; catalytic activity; equations; hydroxyl radicals; irradiation; kinetics; manganese oxides; microwave radiation; nanoparticles; oxidants; oxidation; oxygen;     Show all 14 Subjects
Abstract:
... A new microwave catalytic oxidation process based on two kinds of catalysts, the commercially available activated carbon (AC) and Mn2O3 nanoparticle modified AC (Mn2O3/AC), was reported for the degradation of 4-nitrophenol (4-NP) without adding any oxidant. Effects of microwave power, catalyst dosage, irradiation time, and initial concentration for the degradation efficiency were studied. Results ...
DOI:
10.1016/j.jhazmat.2015.11.028

5. Catalytic reduction of 4-nitrophenol using gold nanoparticles biosynthesized by cell-free extracts of Aspergillus sp. WL-Au

Author:
Shen, Wenli; Qu, Yuanyuan; Pei, Xiaofang; Li, Shuzhen; You, Shengnan; Wang, Jingwei; Zhang, Zhaojing; Zhou, Jiti
Source:
Journal of hazardous materials 2017 v.321 pp. 299-306
ISSN:
0304-3894
Subject:
p-nitrophenol,   etc   ; Aspergillus; Fourier transform infrared spectroscopy; X-ray diffraction; catalysts; catalytic activity; gold; moieties; nanogold; nanoparticles; stabilizers; surface plasmon resonance; transmission electron microscopy;     Show all 13 Subjects
Abstract:
... A facile one-pot eco-friendly process for synthesis of gold nanoparticles (AuNPs) with high catalytic activity was achieved using cell-free extracts of Aspergillus sp. WL-Au as reducing, capping and stabilizing agents. The surface plasmon resonance band of UV–vis spectrum at 532nm confirmed the presence of AuNPs. Transmission electron microscopy images showed that quite uniform spherical AuNPs wer ...
DOI:
10.1016/j.jhazmat.2016.07.051

6. Magnetite-platinum nanoparticles-modified glassy carbon electrode as electrochemical detector for nitrophenol isomers

Author:
Gerent, Giles G.; Spinelli, Almir
Source:
Journal of hazardous materials 2017 v.330 pp. 105-115
ISSN:
0304-3894
Subject:
p-nitrophenol,   etc   ; catalysts; chlorides; electrochemistry; glassy carbon electrode; humans; isomers; magnetite; nanoparticles; platinum; polymers; rain; surface area; urine;     Show all 14 Subjects
Abstract:
... A glassy carbon electrode was modified with magnetite and platinum nanoparticles stabilized with 3-n-propyl-4-picoline silsesquioxane chloride. This chemically-modified electrode is proposed for the first time for the individual or simultaneous electrochemical detection of nitrophenol isomers. Nanoparticles act as catalysts and also increase the surface area. The polymer stabilizes the particles a ...
DOI:
10.1016/j.jhazmat.2017.02.002

7. Hierarchically porous poly(ethylenimine) modified poly(styrene-co-divinylbenzene) microspheres for the adsorption of gold nanoparticles and simultaneously being transformed as the nanoparticles immobilized catalyst

Author:
Qin, Si; Ma, Li-yun; Sun, Xiao; Mao, Xiaojing; Xu, Li
Source:
Journal of hazardous materials 2019 v.366 pp. 529-537
ISSN:
0304-3894
Subject:
p-nitrophenol,   etc   ; X-ray diffraction; adsorbents; adsorption; catalysts; contact angle; electrostatic interactions; energy-dispersive X-ray analysis; gold; human health; mass transfer; mercury; microparticles; micropores; models; nanogold; nanoparticles; nitrogen; porosimetry; recycling; scanning electron microscopy; sorption isotherms; spectroscopy; surface area; toxicity; wastes; zeta potential;     Show all 27 Subjects
Abstract:
... With the extensive applications of gold nanoparticles (AuNPs) and the confirmation of their toxicity on human health and environment, it was urgent to remove AuNPs from environment. The hierarchically porous poly(ethylenimine) modified poly(styrene-co-divinylbenzene) microsphere (PEI-PS-DVB) was prepared and characterized by scanning electron microscopy, X-ray diffraction, transform infrared spect ...
DOI:
10.1016/j.jhazmat.2018.12.033

8. Reductive transformation of nitroaromatic compounds by Pd nanoparticles on nitrogen-doped carbon (Pd@NC) biosynthesized using Pantoea sp. IMH

Author:
Liu, Wenjing; Yu, Yaqin; Du, Jingjing; Jing, Chuanyong
Source:
Journal of hazardous materials 2019 v.366 pp. 338-345
ISSN:
0304-3894
Subject:
p-nitrophenol,   etc   ; Pantoea; X-ray absorption spectroscopy; biosynthesis; carbon; catalysts; catalytic activity; chemical bonding; density functional theory; hybridization; nanoparticles; nitroanilines; palladium; remediation; wastewater;     Show all 15 Subjects
Abstract:
... Reductive transformation of nitroaromatic compounds is a central step in its remediation in wastewater, and therefore has invoked extensive catalytical research with rare metals such as palladium (Pd). Herein, we report Pantoea sp. IMH assisted biosynthesis for Pd@NC as an efficient catalyst for the reduction of nitroaromatics. Multiple complementary characterization results for Pd@NC evidenced th ...
DOI:
10.1016/j.jhazmat.2018.12.009

9. Highly efficient and magnetically recyclable Pd catalyst supported by iron-rich fly ash@fly ash-derived SiO2 for reduction of p-nitrophenol

Author:
Park, Jaehyeong; Bae, Sungjun
Source:
Journal of hazardous materials 2019 v.371 pp. 72-82
ISSN:
0304-3894
Subject:
p-nitrophenol,   etc   ; catalysts; coal fly ash; cost effectiveness; heavy metals; leaching; magnetic properties; magnetism; microparticles; nanoparticles; palladium; silica; silicon; toxicity;     Show all 14 Subjects
Abstract:
... In this study, a magnetically recyclable Pd catalyst was developed by using the novel support of iron-rich coal fly ash/silica (IRFA@SiO2) for highly efficient reduction of p-nitrophenol (p-NP). IRFA microspheres were coated with amorphous SiO2 synthesized from non-magnetic coal fly ash (NMFA) and then loaded with Pd by impregnation method for the synthesis of Pd/IRFA@SiO2. Various surface analyse ...
DOI:
10.1016/j.jhazmat.2019.02.105

10. A novel synthesis of oleophylic Fe2O3/polystyrene fibers by γ-Ray irradiation for the enhanced photocatalysis of 4-chlorophenol and 4-nitrophenol degradation

Author:
Wang, Ji-Chao; Li, Ying; Li, Heng; Cui, Zeng-Hui; Hou, Yuxia; Shi, Weina; Jiang, Kai; Qu, Lingbo; Zhang, Yu-Ping
Source:
Journal of hazardous materials 2019 v.379 pp. 120806
ISSN:
0304-3894
Subject:
p-nitrophenol,   etc   ; 4-chlorophenol; adsorption; catalysts; ferric oxide; gamma radiation; hydrophobicity; hydroxyl radicals; irradiation; moieties; nanoparticles; phenol; photocatalysis; pollutants; synergism; wastewater treatment;     Show all 16 Subjects
Abstract:
... Photocatalytic degradation by efficient and easy recyclable semiconductor-catalysts is an ideal way to solve the environmental problem. A series of Fe2O3/Polystyrene (Fe2O3/PS) composite fibers with hydrophobic property were obtained by the electrospinning and γ-Ray irradiation methods. The γ-Ray irradiation treatment not only formed steady micro-nano construction of nanoparticles and fiber, but a ...
DOI:
10.1016/j.jhazmat.2019.120806