Enhanced catalytic degradation of 4-NP using a superhydrophilic PVDF membrane decorated with Au nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (67) ◽  
pp. 62302-62309 ◽  
Author(s):  
Ziyang Wu ◽  
Haibo Lin ◽  
Yunze Wang ◽  
Xuemin Yu ◽  
Jinglong Li ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
Catalytic Performance ◽  
Catalytic Degradation ◽  
Pvdf Membrane

A superhydrophilic PVDF membrane was decorated with Au nanoparticles with PDA spacers. The influence of membrane affinities on PDA deposition and catalytic performance was investigated.

scholarly journals Probing the surface reactivity of nanocrystals by the catalytic degradation of organic dyes: the effect of size, surface chemistry and composition

2017 ◽  
Vol 5 (23) ◽  
pp. 11917-11929 ◽  
Author(s):  
Jordi Piella ◽  
Florind Merkoçi ◽  
Aziz Genç ◽  
Jordi Arbiol ◽  
Neus G. Bastús ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Surface Coating ◽  
Crystal Size ◽  
Organic Dyes ◽  
Catalytic Performance ◽  
Surface Reactivity ◽  
Catalytic Degradation ◽  
Comprehensive Study

We herein present a comprehensive study on how the catalytic performance and reusability of Au nanocrystals (NCs) are affected by systematic variations of crystal size, surface coating and composition.

scholarly journals N-Doped Biochar as a New Metal-Free Activator of Peroxymonosulfate for Singlet Oxygen-Dominated Catalytic Degradation of Acid Orange 7

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2288
Author(s):  
Ruirui Han ◽  
Yingsen Fang ◽  
Ping Sun ◽  
Kai Xie ◽  
Zhicai Zhai ◽  
...  
Keyword(s):  
Singlet Oxygen ◽  
Rice Straw ◽  
Free Radical Oxidation ◽  
Catalytic Performance ◽  
Catalytic Degradation ◽  
Raw Material ◽  
Composite Catalyst ◽  
Acid Orange 7 ◽  
Radical Oxidation ◽  
Acid Orange

In this paper, using rice straw as a raw material and urea as a nitrogen precursor, a composite catalyst (a nitrogen-doped rice straw biochar at the pyrolysis temperature of 800 °C, recorded as NRSBC800) was synthesized by one-step pyrolysis. NRSBC800 was then characterized using XPS, BET, TEM and other technologies, and its catalytic performance as an activator for permonosulfate (PMS) to degrade acid orange 7 (AO7) was studied. The results show that the introduction of N-doping significantly improved the catalytic performance of NRSBC800. The NRSBC800/PMS oxidation system could fully degrade AO7 within 30 min, with the reaction rate constant (2.1 × 10 −1 min−1) being 38 times that of RSBC800 (5.5 × 10−3 min−1). Moreover, NRSBC800 not only had better catalytic performance than traditional metal oxides (Co3O4 and Fe3O4) and carbon nanomaterial (CNT) but also received less impact from environmental water factors (such as anions and humic acids) during the catalytic degradation process. In addition, a quenching test and electron paramagnetic resonance (EPR) research both indicated that AO7 degradation relied mainly on non-free radical oxidation (primarily singlet oxygen (1O2)). A recycling experiment further demonstrated NRSBC800’s high stability after recycling three times.

A hybrid composite of hydroxyapatite and Ca–Al layered double hydroxide supported Au nanoparticles for highly efficient base-free aerobic oxidation of glucose

2019 ◽  
Vol 48 (25) ◽  
pp. 9161-9172 ◽  
Author(s):  
Yunfeng Zhuge ◽  
Guoli Fan ◽  
Yanjun Lin ◽  
Lan Yang ◽  
Feng Li
Keyword(s):  
Layered Double Hydroxide ◽  
Hybrid Composite ◽  
Au Nanoparticles ◽  
Aerobic Oxidation ◽  
Catalytic Performance ◽  
Highly Efficient ◽  
Double Hydroxide ◽  
Oxidation Of Glucose

A novel hybrid composite of hydroxyapatite/Ca–Al layered double hydroxide supported Au nanoparticles exhibited robust catalytic performance in base-free aerobic oxidation of glucose.

scholarly journals A facile method to fabricate AC/CuO for efficient removal of organic pollutants by adsorption and persulfate-based advanced oxidation processes

2020 ◽  
Author(s):  
Youlin Li ◽  
Yu Hu ◽  
Wenqiao You ◽  
Guangming Zhou ◽  
Guilong Peng
Keyword(s):  
Catalytic Performance ◽  
Catalytic Degradation ◽  
Maximum Adsorption Capacity ◽  
Efficient Removal ◽  
X Ray ◽  
One Step ◽  
Ft Ir ◽  
Degradation Reaction ◽  
The Relationship ◽  
Insight Into

Abstract Activated carbon/CuO (AC/CuO) composites was prepared through a facile one-step hydrothermal method and used as a bifunctional material for adsorption and catalysis degradation of bisphenol A (BPA). The composite was characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and X-ray powder diffraction (XRD). The obtained AC/CuO exhibited excellent adsorption and catalytic performance. The maximum adsorption capacity of BPA on the AC/CuO was 319.03 mg/g according to the Langmuir fitting. At an initial BPA concentration of 20 mg/L, the BPA degradation efficiencies were maintained above 96% for 15 min by using 20 mg/L AC/CuO and 2 mM peroxymonosulfate (PMS). Moreover, the relationship between adsorption and catalytic degradation was also investigated. The results indicated that the pre-adsorption disfavored the degradation reaction. This work not only provides a novel preparation method for AC/CuO catalyst, but also gives a deeper insight into the mechanisms between adsorption and catalytic degradation.

Preparation and Catalytic Performance of Microporous Polymer/Au Nanoparticles Composite Microspheres

2020 ◽  
Vol 35 (2) ◽  
pp. 464-468
Author(s):  
Chun Guo ◽  
Lijuan Zhang ◽  
Yan Zhao ◽  
Mengyuan Li ◽  
Xiaotao Wang ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
Catalytic Performance ◽  
Composite Microspheres ◽  
Microporous Polymer

scholarly journals Graphdiyne bearing pillar[5]arene-reduced Au nanoparticles for enhanced catalytic performance towards the reduction of 4-nitrophenol and methylene blue

RSC Advances ◽  
2019 ◽  
Vol 9 (66) ◽  
pp. 38372-38380 ◽  
Author(s):  
Xiaoping Tan ◽  
Jianhua Xu ◽  
Ting Huang ◽  
Sheng Wang ◽  
Maojie Yuan ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Au Nanoparticles ◽  
Catalytic Performance ◽  
Hybrid Nanomaterial ◽  
P Application

Application of a novel 2D heterogeneous hybrid nanomaterial based on graphdiyne and pillar[5]arene-reduced Au nanoparticles in catalyzing the reduction of 4-nitrophenol and methylene blue.

A comparative DFT study of adsorption and catalytic performance of Au nanoparticles at anatase and brookite TiO2 surfaces

2011 ◽  
Vol 605 (15-16) ◽  
pp. 1369-1380 ◽  
Author(s):  
Wei-Kun Li ◽  
Li-Na Chu ◽  
Xue-Qing Gong ◽  
Guanzhong Lu
Keyword(s):  
Au Nanoparticles ◽  
Catalytic Performance ◽  
Dft Study

Monolithic carbon foam-supported Au nanoparticles with excellent catalytic performance in a fixed-bed system

2017 ◽  
Vol 41 (24) ◽  
pp. 15027-15032 ◽  
Author(s):  
Xiang Liu ◽  
Yan Li ◽  
Zheng Xing ◽  
Xiaohua Zhao ◽  
Ningning Liu ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
Fixed Bed ◽  
Carbon Foam ◽  
Catalytic Performance ◽  
System P ◽  
Fixed Bed System ◽  
Excellent Catalytic Performance

A MCF/Au monolith can be innovatively utilized to construct a fixed-bed system, which exhibits exceptional reduction performance for 4-nitrophenol.

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