Construction of a solar spectrum active SnS/ZnO p–n heterojunction as a highly efficient photocatalyst: the effect of the sensitization process on its performance

2018 ◽  
Vol 42 (16) ◽  
pp. 13689-13701 ◽  
Author(s):  
Shefali Jayswal ◽  
Rakesh S. Moirangthem
Keyword(s):  
Photocatalytic Activity ◽  
Organic Dyes ◽  
Solar Spectrum ◽  
Ex Situ ◽  
Highly Efficient ◽  
Sensitization Process

Comparison of photocatalytic activity of ex situ and in situ sensitized 1D SnS/ZnO in the photodegradation of multiple organic dyes under sunlight.

scholarly journals In Situ Construction of a MgSn(OH)6 Perovskite/SnO2 Type-II Heterojunction: A Highly Efficient Photocatalyst towards Photodegradation of Tetracycline

Nanomaterials ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 53 ◽  
Author(s):  
Yuanyuan Li ◽  
Xiaofang Tian ◽  
Yaoqiong Wang ◽  
Qimei Yang ◽  
Yue Diao ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Ultraviolet Irradiation ◽  
Photocatalytic Oxidation ◽  
Photocatalytic Performance ◽  
Diffuse Reflectance Spectroscopy ◽  
Active Species ◽  
Growth Strategy ◽  
Type Ii ◽  
Highly Efficient

Using solar energy to remove antibiotics from aqueous environments via photocatalysis is highly desirable. In this work, a novel type-II heterojunction photocatalyst, MgSn(OH)6/SnO2, was successfully prepared via a facile one-pot in situ hydrothermal method at 220 °C for 24 h. The obtained heterojunctions were characterized via powder X-ray diffraction, Fourier-transform infrared spectroscopy, transmission electron microscopy, and ultraviolet-visible diffuse reflectance spectroscopy. The photocatalytic performance was evaluated for photodegradation of tetracycline solution under ultraviolet irradiation. The initial concentration of tetracycline solution was set to be 20 mg/L. The prepared heterojunctions exhibited superior photocatalytic activity compared with the parent MgSn(OH)6 and SnO2 compounds. Among them, the obtained MgSn(OH)6/SnO2 heterojunction with MgCl2·6H2O:SnCl4·5H2O = 4:5.2 (mmol) displayed the highest photocatalytic performance and the photodegradation efficiency conversion of 91% could be reached after 60 min under ultraviolet irradiation. The prepared heterojunction maintained its performance after four successive cycles of use. Active species trapping experiments demonstrated that holes were the dominant active species. Hydroxyl radicals and superoxide ions had minor effects on the photocatalytic oxidation of tetracycline. Photoelectrochemical measurements were used to investigate the photocatalytic mechanism. The enhancement of photocatalytic activity could be assigned to the formation of a type-II junction photocatalytic system, which was beneficial for efficient transfer and separation of photogenerated electrons and holes. This research provides an in situ growth strategy for the design of highly efficient photocatalysts for environmental restoration.

scholarly journals Highly efficient photocatalytic activity of Ag3PO4/Ag/ZnS(en)0.5 photocatalysts through Z-scheme photocatalytic mechanism

RSC Advances ◽  
2017 ◽  
Vol 7 (30) ◽  
pp. 18392-18399 ◽  
Author(s):  
Na Wei ◽  
Hongzhi Cui ◽  
Mingliang Wang ◽  
Xinzhen Wang ◽  
Xiaojie Song ◽  
...  
Keyword(s):  
Composite Material ◽  
Photocatalytic Activity ◽  
Hydrothermal Method ◽  
Facile Hydrothermal Method ◽  
Photocatalytic Mechanism ◽  
Highly Efficient

A novel Z-scheme Ag3PO4/Ag/ZnS(en)0.5 composite material was successfully prepared via a facile hydrothermal method and in situ precipitation.

An Inexpensive, Stable and Highly Efficient Photocatalyst for Degradation of Organic Dyes in Water: Core-Shell Montmorillonite-TiO2 Colloids

2013 ◽  
Vol 864-867 ◽  
pp. 404-407
Author(s):  
Shi Zhao Kang ◽  
Tan Wu ◽  
Xiang Qing Li ◽  
Yi Lun Zhou ◽  
Jin Mu
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Organic Dyes ◽  
Hydrothermal Process ◽  
Core Shell ◽  
X Ray Diffraction ◽  
X Ray ◽  
Highly Efficient ◽  
Transmission Electron ◽  
The Stability

Core-shell montmorillonite-TiO2 colloids were prepared in a hydrothermal process and characterized with transmission electron microscope, powder X-ray diffraction analysis, Brunauer-Emmett-Teller analysis and UV-vis spectra. Afterwards, their photocatalytic activity was investigated under UV irradiation using methyl orange as a model contaminant. In addition, the stability of the core-shell montmorillonite-TiO2 colloids was investigated by repeatedly performing methyl orange photocatalytic degradation experiments. The results indicate the as-prepared core-shell montmorillonite-TiO2 colloids are a highly efficient photocatalyst for the degradation of organic dyes in water. And this photocatalytic activity remains almost unchanged after eight successive cycles.

In situ synthesis of flexible hierarchical TiO2 nanofibrous membranes with enhanced photocatalytic activity

2015 ◽  
Vol 3 (44) ◽  
pp. 22136-22144 ◽  
Author(s):  
Renzhong Zhang ◽  
Xueqin Wang ◽  
Jun Song ◽  
Yang Si ◽  
Xingmin Zhuang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Organic Dyes ◽  
In Situ Synthesis ◽  
Electrospinning Technique ◽  
Excellent Photocatalytic Activity ◽  
Nanofibrous Membranes

Flexible hierarchical mesoporous TiO2 NP modified TiO2 nanofibrous membranes with excellent photocatalytic activity towards organic dyes were fabricated by the combination of an electrospinning technique and in situ polymerization.

scholarly journals Ag2S quantum dots in situ coupled to hexagonal SnS2 with enhanced photocatalytic activity for MO and Cr(vi) removal

RSC Advances ◽  
2017 ◽  
Vol 7 (74) ◽  
pp. 46823-46831 ◽  
Author(s):  
Jie Liu ◽  
Liquan Jing ◽  
Guofang Gao ◽  
Yuanguo Xu ◽  
Meng Xie ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Composite Photocatalyst ◽  
Highly Efficient ◽  
Visible Light Driven ◽  
Ag2s Quantum Dots

A highly efficient visible-light-driven composite photocatalyst of Ag2S quantum dots coupled to hexagonal SnS2 exhibited considerably increased photocatalytic activity for MO and Cr(vi) removal.

Highly efficient photocatalytic activity of Ag3VO4/WO2.72 nanocomposites for the degradation of organic dyes from the ultraviolet to near-infrared regions

2020 ◽  
Vol 512 ◽  
pp. 145618 ◽  
Author(s):  
Kebena Gebeyehu Motora ◽  
Chang-Mou Wu ◽  
Tolesa Fita Chala ◽  
Min-Hui Chou ◽  
Chung-Feng Jeffrey Kuo ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Near Infrared ◽  
Organic Dyes ◽  
Highly Efficient

Highly efficient visible light induced photocatalytic activity of a novel in situ synthesized conjugated microporous poly(benzothiadiazole)–C3N4 composite

2017 ◽  
Vol 7 (2) ◽  
pp. 418-426 ◽  
Author(s):  
Shengyao Wang ◽  
Xianglong Yang ◽  
Huijie Hou ◽  
Xing Ding ◽  
Shenhui Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Highly Efficient ◽  
Visible Light Driven ◽  
Redox Ability

Highly efficient visible light-driven heterojunction BBT–C3N4 exhibits superior redox ability for sulfathiazole and Cr(vi) removal.

scholarly journals Biomolecule-assisted synthesis of defect-mediated Cd1−xZnxS/MoS2/graphene hollow spheres for highly efficient hydrogen evolution

2016 ◽  
Vol 18 (24) ◽  
pp. 16208-16215 ◽  
Author(s):  
Ruifeng Du ◽  
Yihe Zhang ◽  
Baoying Li ◽  
Xuelian Yu ◽  
Huijuan Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Evolution ◽  
Hollow Spheres ◽  
Highly Efficient

The in situ formation of defect-rich MoS2 cocatalysts exhibited a significant impact on the photocatalytic activity of Cd1−xZnxS/MoS2/graphene hollow spheres.

Sign in / Sign up

Export Citation Format

Share Document