scholarly journals CuInS2/Mg(OH)2 Nanosheets for the Enhanced Visible-Light Photocatalytic Degradation of Tetracycline

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1567 ◽  
Author(s):  
Xiaogang Zheng ◽  
Yiting Mao ◽  
Jing Wen ◽  
Xiaojin Fu ◽  
Xinhui Liu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Ph Value ◽  
Inorganic Ions ◽  
Charge Carriers ◽  
Oh Radicals ◽  
Cycle Times ◽  
Atomic Force ◽  
Excellent Photocatalytic Activity ◽  
Visible Light Driven

CuInS2/Mg(OH)2 (CIS/Mg(OH)2) nanosheets have been prepared for the visible light activated photodegradation of tetracycline hydrochloride (TCH). The introduction of CuInS2 has proven to enhance the photocatalytic activity of Mg(OH)2 nanosheets. It’s ascribed to the enhanced transfer and separation of charge carriers at the junction interface between CuInS2 and Mg(OH)2. The photocatalytic activity of obtained CIS/Mg(OH)2 is greatly affected by CuInS2 content, pH value, and inorganic ions. Among these samples, 2-CIS/Mg(OH)2 exhibits the excellent photocatalytic activity and durability for the visible light driven removal of TCH after five cycle times. Atomic force microscope (AFM) images indicate that the surface roughness of 2-CIS/Mg(OH)2 is intensively influenced in adsorption-photocatalysis process. The •O2− and •OH radicals are vital for the visible light driven photocatalytic activity of 2-CIS/Mg(OH)2 for TCH removal.

scholarly journals Enhanced Visible-Light Photocatalytic Activity of Ag QDs Anchored on CeO2 Nanosheets with a Carbon Coating

Nanomaterials ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1643 ◽  
Author(s):  
Xiaogang Zheng ◽  
Qian Chen ◽  
Sihao Lv ◽  
Xiaojin Fu ◽  
Jing Wen ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Carbon Coating ◽  
Ph Value ◽  
Inorganic Ions ◽  
Redox Activity ◽  
Oh Radicals ◽  
Doping Content ◽  
Surface Plasma Resonance ◽  
Ag Doping

Ag quantum dots (QDs) anchored on CeO2 nanosheets with a carbon coating (Ag/CeO2@C) (composites) were prepared via an in situ reduction approach for the photocatalytic degradation of Cr(VI) and tetracycline hydrochloride (TCH) in the visible-light region. The photocatalytic activity of Ag/CeO2@C was greatly affected by carbon content, Ag-doping content, Cr(VI) concentration, pH value, and inorganic ions. Enhanced photocatalytic activity was obtained by Ag/CeO2@C (compared to CeO2 and CeO2@C), of which 3-Ag/CeO2@C-2 with an Ag-doping content of 5.41% presented the best removal efficiency and the most superior stability after five cycles. ·O2− and ·OH radicals were crucial for the photocatalytic capacity of 3-Ag/CeO2@C-2. The combined effect of the surface plasma resonance (SPR) of Ag QDs, an electron trapper of carbon shells, and the redox activity of the Ce(III)/Ce(IV) coupling induced efficient charge transfer and separation, suppressing the recombination of electron–hole pairs.

The Synthesis of CuS Hexagonal Nanosheet-Graphene for Use as a High Performance Photocatalyst

NANO ◽  
2016 ◽  
Vol 11 (05) ◽  
pp. 1650054 ◽  
Author(s):  
Bin Zeng ◽  
Yang Yin
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
High Performance ◽  
Organic Pollutant ◽  
High Photocatalytic Activity ◽  
Charge Carriers ◽  
Thermal Method ◽  
One Pot ◽  
Graphene Nanocomposites ◽  
Excellent Photocatalytic Activity

CuS hexagonal nanosheet/graphene was fabricated by a facile one-pot microwave-thermal method. The samples possess excellent photocatalytic activity for degradation of organic pollutant under visible light. The high photocatalytic activity was attributed to the deposition of CuS hexagonal nanosheet onto graphene. CuS nanosheet serves as a transporter which efficiently inhibits the recombination of the photo-induced charge carriers in the nanocomposites. The developed method demonstrates a facile approach towards the synthesis of two-dimensional semiconductor-graphene nanocomposites with excellent photocatalytic performance under visible light.

scholarly journals Visible-light-driven Ag/Bi3O4Cl nanocomposite photocatalyst with enhanced photocatalytic activity for degradation of tetracycline

RSC Advances ◽  
2018 ◽  
Vol 8 (65) ◽  
pp. 37200-37207 ◽  
Author(s):  
Enhui Jiang ◽  
Xiaoteng Liu ◽  
Huinan Che ◽  
Chunbo Liu ◽  
Hongjun Dong ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Excellent Photocatalytic Activity ◽  
Visible Light Driven

A novel Ag/Bi3O4Cl photocatalyst has been synthesized by a facile photodeposition process. The Ag/Bi3O4Cl photocatalyst exhibited excellent photocatalytic activity for the degradation of tetracycline.

Novel core–shell structured BiVO4 hollow spheres with an ultra-high surface area as visible-light-driven catalyst

CrystEngComm ◽  
2014 ◽  
Vol 16 (27) ◽  
pp. 6059-6065 ◽  
Author(s):  
Yang Lu ◽  
Yong-Song Luo ◽  
Hong-Mei Xiao ◽  
Shao-Yun Fu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Surface Area ◽  
High Surface ◽  
Hollow Spheres ◽  
High Surface Area ◽  
Core Shell ◽  
Hydrothermal Route ◽  
Excellent Photocatalytic Activity ◽  
Visible Light Driven

Novel core–shell-structured BiVO4 hollow spheres synthesized via a simple hydrothermal route exhibit an excellent photocatalytic activity.

scholarly journals N-Doped Carbon-Coated ZnS with Sulfur-Vacancy Defect for Enhanced Photocatalytic Activity in the Visible Light Region

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1657 ◽  
Author(s):  
Hao Peng ◽  
Daixin Liu ◽  
Xiaogang Zheng ◽  
Xiaojin Fu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Vacancy Defect ◽  
Visible Light Region ◽  
Sulfur Vacancy ◽  
Cycle Times ◽  
Light Region ◽  
Efficient Charge ◽  
Visible Light Driven ◽  
Carbon Coated

In this work, N-doped carbon-coated ZnS with a sulfur-vacancy defect (ZnS@N-C) was performed for the visible-light-driven photodegradation of tetracycline hydrochloride (TCH). The obtained ZnS@N-C exhibited enhanced photocatalytic activity compared with ZnS for TCH removal. Among these ZnS@N-C composites, ZnS@N-C-3 with N-doped content of 3.01% (100 nm) presented the best visible-light photocatalytic activity and superior long-term photocatalytic stability after five cycle times for TCH removal in the visible light region. This may be ascribed to the interface between the N-doped carbon shell and ZnS with a sulfur-vacancy defect for efficient charge transfer and the restrained recombination of charge carriers. Electron spin resonance (ESR) results indicate that the ·O2‒ radical plays a crucial role in the enhanced photocatalytic activity of ZnS@N-C-3.

Novel Z-scheme visible-light-driven Ag3PO4/Ag/SiC photocatalysts with enhanced photocatalytic activity

2015 ◽  
Vol 3 (8) ◽  
pp. 4652-4658 ◽  
Author(s):  
Zhihong Chen ◽  
Fan Bing ◽  
Qiong Liu ◽  
Zhengguo Zhang ◽  
Xiaoming Fang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photogenerated Electron ◽  
Electron Hole ◽  
Efficient Separation ◽  
Excellent Photocatalytic Activity ◽  
Visible Light Driven

The excellent photocatalytic activity of Ag3PO4/Ag/SiC can be ascribed to the efficient separation of photogenerated electron–hole pairs through the Z-scheme.

A Novel Visible-Light-Driven Photocatalyst: Pt Surface Modified Bi2WO6-WO3 Composite

2013 ◽  
Vol 448-453 ◽  
pp. 178-181
Author(s):  
Wen Tao Yi ◽  
Chun Yan Yan
Keyword(s):  
Photocatalytic Activity ◽  
Surface Plasmon Resonance ◽  
Visible Light ◽  
Cetyltrimethylammonium Bromide ◽  
Deposition Method ◽  
Heterojunction Structure ◽  
Excellent Photocatalytic Activity ◽  
Visible Light Driven ◽  
Surface Modified ◽  
Degradation Of Methyl Orange

Bi2WO6-WO3heterojunctions were first prepared using hydrothermal method with the assistance of cetyltrimethylammonium bromide (CTAB). And Bi2WO6-WO3was further fabricated by depositing Pt on the surface using the photo-assisted deposition method. These catalysts were characterized by XRD, SEM, FTIR, BET and DRS. It is found that Pt-Bi2WO6-WO3acting as a novel visible light-driven photocatalyst exhibited excellent photocatalytic activity in degradation of Methyl Orange (MO) under visible light irradiation. The highest photocatalytic activity of Pt-Bi2WO6-WO3photocatalyst is attributed to the synergistic effect of Pt surface plasmon resonance and Bi2WO6-WO3heterojunction structure.

Preparation and Visible Light Photocatalytic Activity of Bi2WO6 Hollow Microspheres

2013 ◽  
Vol 864-867 ◽  
pp. 1323-1326
Author(s):  
Ming Sheng Gui ◽  
Peng Fei Wang ◽  
Ji Gang Yuan ◽  
Yan Qing Li ◽  
Wen Gang Zeng
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Solar Spectrum ◽  
Complex Oxides ◽  
The Past ◽  
Excellent Photocatalytic Activity ◽  
Visible Light Driven ◽  
Photoinduced Hydrophilicity ◽  
Visible Light Photocatalytic ◽  
Degradation Of Pollutants

Photocatalytic technology as a means of degradation of pollutants had been widespread concerned. In the past three decades, titanium dioxide (TiO2) has become one of the most extensively studied metal oxides because of its excellent photocatalytic activity and photoinduced hydrophilicity[1,. But TiO2only absorbs wavelengths in the near-UV region (λ<400nm), which is about 3% of the solar spectrum and 53% visible light was can not efficiently utilized for the degradation of organic pollutants. Therefore, it is crucial to explore visible-light-induced photocatalysts. In recent years, in addition to traditional oxides, some complex oxides have been found under visible light driven have a good photocatalytic activity, Such as, N-doped TiO2[, BiOX (X=Cl, Br, I)[, Bi2MoO6[and so on. Nevertheless, such efforts have not achieved satisfactory results aspects of making full use of the visible-light. Therefore, it is still a great challenge to design efficient visible-light driven photocatalysts.

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