Multiscale cellulose based self-assembly of hierarchical structure for photocatalytic degradation of organic pollutant

Cellulose ◽  
2020 ◽  
Vol 27 (9) ◽  
pp. 5241-5253 ◽  
Author(s):  
Lingfeng Yan ◽  
Baojiang Liu ◽  
Weiya Li ◽  
Tao Zhao ◽  
Yatao Wang ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Hierarchical Structure ◽  
Self Assembly ◽  
Organic Pollutant

scholarly journals Magnetic Field-Assisted Photocatalytic Degradation of Organic Pollutants over Bi1−xRxFeO3 (R = Ce, Tb; x = 0.00, 0.05, 0.10 and 0.15) Nanostructures

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4079
Author(s):  
Radhalayam Dhanalakshmi ◽  
Nambi Venkatesan Giridharan ◽  
Juliano C. Denardin
Keyword(s):  
Magnetic Field ◽  
Rare Earth ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Organic Pollutants ◽  
Visible Light Irradiation ◽  
Organic Pollutant ◽  
Hydrothermal Process ◽  
Phenol Red ◽  
Magnetic Features

Magnetic-field-accelerated photocatalytic degradation of the phenol red (PR) as a model organic pollutant was studied using rare-earth elements modified BiFeO3 (Bi1−xRxFeO3 (R = Ce, Tb; x = 0.0, 0.05, 0.10 and 0.15); BFO: RE) nanostructures. The nanostructures were prepared via the hydrothermal process and their morphological, structural, functional, optical and magnetic features were investigated in detail. The effect of magnetic fields (MFs) on photocatalysis were examined by applying the different MFs under visible light irradiation. The enhanced photodegradation efficiencies were achieved by increasing the MF up to 0.5T and reduced at 0.7T for the compositions x = 0.10 in both Ce and Tb substituted BFO. Further, mineralization efficiencies of PR, reproducibility of MF-assisted photocatalysis, stability and recyclability of BFO: RE nanostructures were also tested.

scholarly journals Nano-PAA-CuCl2 Composite as Fenton-Like Reusable Catalyst to Enhanced Degrade Organic Pollutant MB/MO

Catalysts ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 10
Author(s):  
Yang Dang ◽  
Yu Cheng ◽  
Yukun Zhou ◽  
Yifei Huang ◽  
Kaige Wang
Keyword(s):  
Photoelectron Spectroscopy ◽  
Self Assembly ◽  
Organic Pollutant ◽  
Energy Dispersive Spectrometer ◽  
Chemical Properties ◽  
Anodic Alumina ◽  
Alumina Substrate ◽  
Reusable Catalyst ◽  
X Ray ◽  
Nanoporous Anodic Alumina

The treatment of organic dye contaminants in wastewaters has now becoming more imperative. Fenton-like degradation of methylene blue (MB) and methyl orange (MO) in aqueous solution was investigated by using a nanostructure that a layer of CuCl2 nanoflake film grown on the top surface of nanoporus anodic alumina substrate (nano-PAA-CuCl2) as catalyst. The new nano-PAA-CuCl2 composite was fabricated with self-assembly approach, that is, a network porous structure film composed of CuCl2 nanoflake grown on the upper surface of nanoporous anodic alumina substrate, and the physical and chemical properties are characterized systematically with the X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), and high-resolution transmission electron microscopy (HRTEM), Energy Dispersive Spectrometer (EDS), X-ray photoelectron spectroscopy (XPS). The experimental results showed that the nano-PAA-CuCl2 catalyst presented excellent properties for the degradation of two typical organic pollutants such as MB and MO, which were almost completely degraded with 8 × 10−4mol/L nano-PAA-CuCl2 catalyst after 46 min and 60 min at reaction conditions of H2O2 18 mM and 23 mM, respectively. The effects of different reaction parameters such as initial pH, H2O2 concentration, catalyst morphology and temperature were attentively studied. And more, the stability and reusability of nano-PAA-CuCl2 were examined. Finally, the mechanism of MB and MO degradation by the nano-PAA-CuCl2/H2O2 system was proposed, based on the experimental data of the BCA and the temperature-programmed reduction (H2-TPR) and theoretical analysis, the reaction kinetics belonged to the pseudo-first-order equation. This new nanoporous composite material and preparation technology, as well as its application in Fenton-like reaction, provide an effective alternative method with practical application significance for wastewater treatment.

Facile synthesis of free-metal ternary composites for ultra-fast photocatalytic degradation of organic pollutant

2020 ◽  
Vol 340 ◽  
pp. 294-301 ◽  
Author(s):  
Youyi Sun ◽  
Congxu Wang ◽  
Guizheng Gu ◽  
Yibing Ma ◽  
Zhiyuan Xiong ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Organic Pollutant ◽  
Facile Synthesis ◽  
Free Metal

Metal-Tunable Self-Assembly of Hierarchical Structure in Mussel-Inspired Peptide Films

ACS Nano ◽  
2018 ◽  
Vol 12 (3) ◽  
pp. 2160-2168 ◽  
Author(s):  
Franziska Jehle ◽  
Peter Fratzl ◽  
Matthew J. Harrington
Keyword(s):  
Hierarchical Structure ◽  
Self Assembly

Fabrication of Polymer@α-FeOOH Core–Shell Particles for the Photocatalytic Degradation of Organic Pollutant

2019 ◽  
Vol 30 (2) ◽  
pp. 513-524 ◽  
Author(s):  
Huixiang Liu ◽  
Zhongyu Li ◽  
Shuang Wang ◽  
Conghui Yuan ◽  
Yiting Xu ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Organic Pollutant ◽  
Core Shell ◽  
Shell Particles
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