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.

Enhanced Visible-Light Photocatalytic Degradation of Antibiotics by MoS2-Modified U-g-C3N4/T-g-C3N4 Isotypic Heterojunction

NANO ◽  
2019 ◽  
Vol 14 (09) ◽  
pp. 1950111
Author(s):  
Hongjin Liu ◽  
Yu Wang ◽  
Jun Lv ◽  
Guangqing Xu ◽  
Xinyi Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Raw Materials ◽  
Reaction System ◽  
Photogenerated Electron ◽  
Electron Hole ◽  
Degradation Rates ◽  
Visible Light Driven ◽  
Sacrificial Agent

Based on U-g-C3N4 (U-gCN) and T-g-C3N4 (T-gCN) prepared with urea and thiourea as raw materials, respectively, a visible-light-driven MoS2-modified U-gCN/T-gCN/MoS2 (UTM) ternary heterojunction photocatalyst was successfully prepared using a sonication and bathing method. The photocatalytic activity of as-prepared photocatalyst was evaluated through the degradation of tetracycline hydrochloride (TC) and Rhodamine B (RhB) under the visible light irradiation. The UTM ternary heterojunction showed remarkably enhanced photocatalytic activity. For the degradation of TC and RhB, the degradation rates of 93.9% and 99.9% have been achieved after being irradiated under visible light for 2[Formula: see text]h and 1[Formula: see text]h, respectively. The enhanced photocatalytic performance can be ascribed to the role of loaded MoS2 cocatalyst and the well-formed interfaces between U-gCN and T-gCN, which not only enhance the light absorption, but also accelerate the separation and transfer of photogenerated electron–hole pairs. Furthermore, UTM ternary heterojunction has excellent recyclability and chemical stability. The photodegradation rates of 89.9% and 96.78% of TC and RhB have been obtained, respectively, after being reused for five times. Sacrificial agent tests demonstrate that [Formula: see text][Formula: see text] is the major reactive species in the photocatalytic reaction system.

Enhanced visible light driven photocatalytic activity of CdO–graphene oxide heterostructures for the degradation of organic pollutants

2018 ◽  
Vol 42 (5) ◽  
pp. 3246-3259 ◽  
Author(s):  
Jahangir Ahmad ◽  
Kowsar Majid
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Visible Light ◽  
Organic Pollutants ◽  
Charge Separation ◽  
Photogenerated Electron ◽  
Electron Hole ◽  
Oxide Heterostructures ◽  
Visible Light Driven ◽  
Suppressed Recombination

Synthesis of efficient CdO based photocatalysts for enhanced visible light driven photocatalytic degradation of organic pollutants mostly emphasize on (1) increase of surface area of the photocatalyst and (2) high charge separation and suppressed recombination of photogenerated electron–hole pairs.

An inverse opal TiO2/g-C3N4 composite with a heterojunction for enhanced visible light-driven photocatalytic activity

2019 ◽  
Vol 48 (10) ◽  
pp. 3486-3495 ◽  
Author(s):  
Juying Lei ◽  
Bin Chen ◽  
Weijia Lv ◽  
Liang Zhou ◽  
Lingzhi Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Absorption ◽  
Separation Efficiency ◽  
Photogenerated Electron ◽  
Absorption Efficiency ◽  
Inverse Opal ◽  
Electron Hole ◽  
Visible Light Absorption ◽  
Visible Light Driven

An inverse opal TiO2/g-C3N4 composite with excellent photogenerated electron–hole separation efficiency and enhanced visible light absorption efficiency was constructed.

scholarly journals Synthesis of WO3/Ag3VO4 photocatalyst applying for the treatment of amoxicillin antibiotics under visible light

2021 ◽  
Vol 63 (11) ◽  
pp. 75-79
Author(s):  
Thi Thu Phuong Tran ◽  
◽  
My Ngoc Tram Dinh ◽  
Thi Yen Nhi Pham ◽  
Vu Ngoc Mai Nguyen ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Adsorption Capacity ◽  
Visible Light Irradiation ◽  
Photogenerated Electron ◽  
Reflectance Spectra ◽  
Light Irradiation ◽  
Electron Hole ◽  
Efficient Separation ◽  
Highly Active

In this paper, WO3/Ag3VO4 photocatalysts were successfully synthesised at various Ag3VO4/WO3 mole ratiosof5, 10, 15, and 20%(WA-x). Ultraviolet-visiblediffuse reflectance spectra (UV-Vis-DRS) indicated that the adsorption capacity of WA-10 (10% Ag3VO4/WO3 mole ratios) under visible light was higher than that of other materials. The photocatalytic properties of obtained materials were investigated by degradation of the antibiotic AMX under visible light irradiation. The degradation conversation of AMX had gotten to about 79.86% in WA-10 after a reaction of three hours. WO3/Ag3VO4 materials were highly active than WO3 and Ag3VO4 with an increase in photocatalytic activity of WO3/Ag3VO4 that can be attributed to the efficient separation of photogenerated electron-hole pairs.

scholarly journals Fabrication of Novel Cyanuric Acid Modified g-C3N4/Kaolinite Composite with Enhanced Visible Light-Driven Photocatalytic Activity

Minerals ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 437 ◽  
Author(s):  
Zhiming Sun ◽  
Fang Yuan ◽  
Xue Li ◽  
Chunquan Li ◽  
Jie Xu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Cyanuric Acid ◽  
Degradation Mechanism ◽  
Organic Pollutant ◽  
Photogenerated Electron ◽  
Light Illumination ◽  
Acid Modification ◽  
Visible Light Driven

A novel kind of cyanuric-acid-modified graphitic carbon nitride (g-C3N4)/kaolinite (m-CN/KA) composite with enhanced visible light-driven photocatalytic performance was fabricated through a facile two-step process. Rhodamine B (RhB) was taken as the target pollutant to study the photocatalytic performance of the synthesized catalysts. It is indicated that the cyanuric acid modification significantly enhanced photocatalytic activity under visible light illumination in comparison with the other reference samples. The apparent rate constant of m-CN/KA is almost 1.9 times and 4.0 times those of g-C3N4/kaolinite and bare g-C3N4, respectively. The superior photocatalytic performance of m-CN/KA could be ascribed, not only to the generation of abundant pore structure and reactive sites, but also to the efficient separation of the photogenerated electron-hole pairs. Furthermore, the possible photocatalytic degradation mechanism of m-CN/KA was also presented in this paper. It could be anticipated that this novel and efficient, metal-free, mineral-based photocatalytic composite has great application prospects in organic pollutant degradation.

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 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.

Synthesis of Er-doped Bi2WO6 and enhancement in photocatalytic activity induced by visible light

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 94887-94894 ◽  
Author(s):  
Meng Wang ◽  
Ziyu Qiao ◽  
Minghao Fang ◽  
Zhaohui Huang ◽  
Yan'gai Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Separation Efficiency ◽  
Photogenerated Electron ◽  
Electron Hole ◽  
Er Doped

1.5% Bi2WO6:Er3+ exhibited highest photocatalytic activity as the separation efficiency of the photogenerated electron–hole pairs is enhanced.

Quantum-sized BiVO4 modified TiO2 microflower composite heterostructures: efficient production of hydroxyl radicals towards visible light-driven degradation of gaseous toluene

2015 ◽  
Vol 3 (43) ◽  
pp. 21655-21663 ◽  
Author(s):  
Juanjuan Sun ◽  
Xinyong Li ◽  
Qidong Zhao ◽  
Moses O. Tadé ◽  
Shaomin Liu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydroxyl Radicals ◽  
Efficient Production ◽  
Electron Hole ◽  
Visible Light Driven ◽  
Gaseous Toluene ◽  
High Separation

The enhanced photocatalytic activity of the quantum-BiVO4/TiO2 composite was mainly attributed to the high separation of photo-induced electron–hole pairs and the efficient production of hydroxyl radicals.

Sign in / Sign up

Export Citation Format

Share Document