One step fabrication of novel Ag-CdS@EP floating photocatalyst for efficient degradation of organic pollutants under visible light illumination

2018 ◽  
Vol 47 (35) ◽  
pp. 12253-12263 ◽  
Author(s):  
Usman Ali Khan ◽  
Jianjun Liu ◽  
Jinbo Pan ◽  
Shengli Zuo ◽  
Hecheng Ma ◽  
...  
Keyword(s):  
Visible Light ◽  
Organic Pollutants ◽  
Ag Nanoparticles ◽  
Light Illumination ◽  
Expanded Perlite ◽  
Visible Light Illumination ◽  
One Step

In this paper, we present the fabrication of an expanded-perlite (EP)-based floating photocatalyst comprising CdS and Ag nanoparticles.

CoTiO3 Nanoparticles as a Highly Active Heterogeneous Catalyst of Peroxymonosulfate for the Degradation of Organic Pollutants under Visible-Light Illumination

2016 ◽  
Vol 42 ◽  
pp. 73-79
Author(s):  
Fang Li Chi ◽  
Guo Dong Zhou ◽  
Biao Song ◽  
Bin Yang ◽  
Yao Hui Lv ◽  
...  
Keyword(s):  
Visible Light ◽  
Organic Pollutants ◽  
Sol Gel ◽  
Average Diameter ◽  
Light Illumination ◽  
Visible Light Photocatalysis ◽  
Catalytic Activation ◽  
Highly Active ◽  
Visible Light Illumination ◽  
Activation Efficiency

Visible light responsive CoTiO3 nanoparticles with average diameter of 100 nm were successfully synthesized by sol-gel method and were firstly applied to catalytic activation of peroxymonosulfate (PMS) for degradation of organic pollutants (Rhodamine B (RhB)). Photocatalytic experiments illustrated that CoTiO3 nanoparticles reveal good photocatalytic activity and excellent ability to activate PMS, the synergistic effect of visible light photocatalysis and sulfate radical generated from activated PMS can degradate RhB efficiently. Besides, CoTiO3 nanoparticles maintain their high photocatalytic and activation efficiency after three times recycling.

Enhanced photocatalytic activity of Eu-doped Bi2S3 nanoflowers for degradation of organic pollutants under visible light illumination

2015 ◽  
Vol 5 (8) ◽  
pp. 4055-4063 ◽  
Author(s):  
Arpita Sarkar ◽  
Abhisek Brata Ghosh ◽  
Namrata Saha ◽  
Amit Kumar Dutta ◽  
Divesh N. Srivastava ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Organic Pollutants ◽  
Light Illumination ◽  
Visible Light Illumination ◽  
Visible Light Driven

Eu-doped Bi2S3 nanoflowers possess highly visible light driven photocatalytic activity towards degradation of organic pollutants.

Enhanced Photocatalytic Activity of GO-Ag@CoCN Composite for RhB Degradation under Visible Light Irradiation

2021 ◽  
Vol 1027 ◽  
pp. 76-80
Author(s):  
Meng Fan Ma ◽  
Ling Fang Qiu ◽  
Ping Li ◽  
Shu Wang Duo
Keyword(s):  
Photocatalytic Activity ◽  
Optical Property ◽  
Visible Light ◽  
Ag Nanoparticles ◽  
Separation Efficiency ◽  
Light Illumination ◽  
Electron Hole ◽  
Heterojunction Structure ◽  
Visible Light Illumination ◽  
Spr Effect

Ag nanoparticles and GO co-modified Co-g-C3N4 composites were prepared successfully. The visible-light adsorption of the optimized GO-Ag@Co-g-C3N4 was improved significantly by the SPR effect of Ag nanoparticles, and the separation efficiency of photo-induced electron-hole pairs of g-C3N4 was accelerated to a large extent by the heterojunction structure of the composite and the superior conductivity of GO. The optimized GO-Ag@CoCN showed promising degradation efficiency for RhB (10 mg/L) under visible light illumination (λ>420 nm) for 160 min, which was 130% and 16.5% higher than the performance using bare g-C3N4 and optimized Ag@Co-g-C3N4, respectively. This work provided a novel way for improving the optical property and photocatalytic activity of g-C3N4.

Direct imaging of visible-light-induced one-step charge separation at the chromium(III) oxide–strontium titanate interface

2021 ◽  
Author(s):  
Aufandra Cakra Wardhana ◽  
Sou Yasuhara ◽  
Min Wen Yu ◽  
Akira Yamaguchi ◽  
Tadaaki Nagao ◽  
...  
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Strontium Titanate ◽  
Charge Separation ◽  
Light Illumination ◽  
Practical Applications ◽  
Visible Light Illumination ◽  
Visible Light Active ◽  
One Step ◽  
Photocatalytic Reactions

Efficient visible-light-active photocatalysts are of great interest for practical applications. First-row transition metal oxide nanoclusters have been loaded onto ultraviolet (UV)-driven semiconductors for several photocatalytic reactions under visible-light illumination. However,...

Durable visible light self-cleaning surfaces imparted by TiO2/SiO2/GO photocatalyst

2018 ◽  
Vol 89 (4) ◽  
pp. 517-527 ◽  
Author(s):  
Jing Gao ◽  
Wandi Li ◽  
Xinzhe Zhao ◽  
Lu Wang ◽  
Ning Pan
Keyword(s):  
Graphene Oxide ◽  
Visible Light ◽  
Gentian Violet ◽  
Light Illumination ◽  
Step Method ◽  
Stain Removal ◽  
Visible Light Illumination ◽  
Visible Light Driven ◽  
One Step ◽  
Self Cleaning

This research intends to enhance the photocatalytic efficiency and durability of substrates coated with TiO2-based nanocomposites under visible light illumination. More specifically, TiO2/SiO2/graphene oxide nanocomposites are successfully sono-synthesized and sono-fabricated onto a polymeric fabric through a facile one-step method. The morphologies, phase structures and optical properties of the samples are studied. The photocatalytic activity of the functionalized samples is assessed through a gentian violet stain removal test and then photodecomposition of methylene blue under visible light, and tested again after 10 washes to check on its durability. It is corroborated that TiO2/SiO2/graphene oxide nanocomposites have shown significantly better visible light self-cleaning performance than just using the pure TiO2 alone. In addition, even after 10 washes, the samples virtually maintain the functionality. Herein, sono-synthesis of TiO2/SiO2/graphene oxide represents a remarkable step forward in visible light-driven self-cleaning treatment for flexible materials and, hence, holds a great potential for commercialization.

scholarly journals Fabrication of the heterojunction catalyst BiVO 4 /P25 and its visible-light photocatalytic activities

2018 ◽  
Vol 5 (8) ◽  
pp. 180752 ◽  
Author(s):  
Heshan Cai ◽  
Linmei Cheng ◽  
Feng Xu ◽  
Hailong Wang ◽  
Weicheng Xu ◽  
...  
Keyword(s):  
Visible Light ◽  
Organic Contaminants ◽  
Photocatalytic Performance ◽  
Light Illumination ◽  
Xps Spectra ◽  
Visible Light Illumination ◽  
Photocatalytic Activities ◽  
Catalytic Stability ◽  
One Step ◽  
Ft Ir

A heterojunction catalyst, BiVO 4 /P25, was successfully fabricated using a one-step hydrothermal method. The prepared composite was characterized using XRD, XPS, Raman, FT-IR, UV–vis, SEM, HRTEM and PL. The HRTEM pictures revealed that the heterostructured composite was composed of BiVO 4 and P25, and from the pictures of SEM we could see the P25 nanoparticles assembling on the surface of flower-shaped BiVO 4 nanostructures. The XPS spectra showed that the prepared catalyst consisted of Bi, V, O, Ti and C. The photocatalytic activity of BiVO 4 /P25 was evaluated by degraded methyl blue (MB) and tetracycline under visible light illumination ( λ > 420 nm), and the results showed that BiVO 4 /P25 composite has a better photocatalytic performance compared with pure BiVO 4 and the most active c-BiVO 4 /P25 sample showed enough catalytic stability after three successive reuses for MB photodegradation. The enhanced photocatalytic performance could mainly be attributed to the better optical absorption ability and good absorption ability of organic contaminants.

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