Ternary AgCl/Ag/Bi2O2CO3 as novel indirect Z-scheme photocatalysts for highly efficient pharmaceuticals and dyes degradation

2019 ◽  
Vol 13 (02) ◽  
pp. 2050007
Author(s):  
Huan Yu ◽  
Haoyong Yin ◽  
Shumin Zhao ◽  
Jianying Gong ◽  
Qiulin Nie ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Reduction Process ◽  
Photoelectrochemical Properties ◽  
Band Structures ◽  
Photocatalytic Mechanism ◽  
Highly Efficient ◽  
Dyes Degradation

Ternary AgCl/Ag/Bi2O2CO3 was designed as novel indirect Z-scheme photocatalysts via in situ precipitation and subsequent photo-reduction process. The morphology, structure, chemical composition, optical and photoelectrochemical properties were characterized via various methods. The photocatalyst showed highly improved photocatalytic performance for Tetracycline (TC), Rhodamine B (RhB) and Carbamazepine (CBZ) degradation. The enhanced photocatalytic performance was mainly due to the formation of ternary AgCl/Ag/Bi2O2CO3 with indirect Z-scheme structures. The possible photocatalytic mechanism was also discussed based on the trapping experiment and band structures of the photocatalyst.

SiO2@Ag/AgCl: a low-cost and highly efficient plasmonic photocatalyst for degrading rhodamine B under visible light irradiation

RSC Advances ◽  
2014 ◽  
Vol 4 (110) ◽  
pp. 64747-64755 ◽  
Author(s):  
Xuefeng Xu ◽  
Man Wang ◽  
Yanyan Pei ◽  
Changchun Ai ◽  
Liangjie Yuan
Keyword(s):  
Aqueous Solution ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Low Cost ◽  
Light Irradiation ◽  
Nano Structure ◽  
Plasmonic Photocatalyst ◽  
Highly Efficient

The micro/nano-structure composite SiO2@Ag/AgCl was employed as a low cost photocatalyst for the degradation of RhB in aqueous solution under visible light irradiation, which exhibited excellent photocatalytic performance and stability.

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.

Preparation and characterization of an Ag3PO4/GaOOH composite with enhanced photocatalytic performance toward rhodamine B

2020 ◽  
Vol 44 (6) ◽  
pp. 2414-2422
Author(s):  
Panqi Huang ◽  
Jingfei Luan
Keyword(s):  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Highly Efficient

A highly efficient Ag3PO4/GaOOH composite was innovatively prepared and its photocatalytic performance was evaluated through degrading rhodamine B (RhB) under illumination, in this paper.

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.

A Comparative Study of Photodegradation Behavior Sodium Niobate Nanowires and Microcubes

2020 ◽  
Vol 861 ◽  
pp. 221-227
Author(s):  
Chang Xu Yan ◽  
Bo Li ◽  
Jin Wang
Keyword(s):  
Catalytic Activity ◽  
Rhodamine B ◽  
Phase Structure ◽  
Photocatalytic Performance ◽  
Ferroelectric Phase ◽  
Organic Dyes ◽  
Sodium Niobate ◽  
Photo Catalytic Activity ◽  
First Order ◽  
Dyes Degradation

Sodium niobate catalysts with different morphologies of nanowires and microcubes have been prepared by hydrothermal method. The photocatalytic performance of NaNbO3 nanowires and microcubes was evaluated by degradation of rhodamine B (RhB) and cationic red X-GRL (CRX). The photodegradation reaction of organic dyes is shown to be kinetically first-order. The as-prepared NaNbO3 nanowires exhibit higher photo-catalytic activity for organic dyes degradation than NaNbO3 microcubes, which is attributed to the larger specific surface area and ferroelectric phase structure.

Tunable 3D hierarchical graphene–BiOI nanoarchitectures: their in situ preparation, and highly improved photocatalytic performance and photoelectrochemical properties under visible light irradiation

RSC Advances ◽  
2014 ◽  
Vol 4 (90) ◽  
pp. 49386-49394 ◽  
Author(s):  
Hongwei Huang ◽  
Kun Liu ◽  
Yinglei Zhang ◽  
Kai Chen ◽  
Yihe Zhang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Photoelectrochemical Properties ◽  
Interfacial Charge Transfer ◽  
In Situ Preparation ◽  
Interfacial Charge

Tunable 3D hierarchical graphene–BiOI nanoarchitectures result in efficient interfacial charge transfer and improved photochemical performance.

In Situ Spatial Charge Separation of an Ir@TiO2 Multiphase Photosystem toward Highly Efficient Photocatalytic Performance of Hydrogen Production

2020 ◽  
Vol 124 (31) ◽  
pp. 16961-16974 ◽  
Author(s):  
Ton Nu Quynh Trang ◽  
Nguyen Dang Nam ◽  
Le Thi Ngoc Tu ◽  
Hau Pham Quoc ◽  
Tran Van Man ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
Highly Efficient ◽  
Spatial Charge

scholarly journals Highly Efficient Ag3PO4/g-C3N4 Z-Scheme Photocatalyst for its Enhanced Photocatalytic Performance in Degradation of Rhodamine B and Phenol

Molecules ◽  
2021 ◽  
Vol 26 (7) ◽  
pp. 2062
Author(s):  
Mingxi Zhang ◽  
Hanxiao Du ◽  
Juan Ji ◽  
Fengfeng Li ◽  
Y. C. Lin ◽  
...  
Keyword(s):  
Rhodamine B ◽  
Charge Separation ◽  
Degradation Rate ◽  
Photocatalytic Performance ◽  
Deposition Method ◽  
Simulated Sunlight ◽  
Light Conditions ◽  
In Situ Deposition ◽  
Degradation Activity

Ag3PO4/g-C3N4 heterojunctions, with different g-C3N4 dosages, were synthesized using an in situ deposition method, and the photocatalytic performance of g-C3N4/Ag3PO4 heterojunctions was studied under simulated sunlight conditions. The results revealed that Ag3PO4/g-C3N4 exhibited excellent photocatalytic degradation activity for rhodamine B (Rh B) and phenol under the same light conditions. When the dosage of g-C3N4 was 30%, the degradation rate of Rh B at 9 min and phenol at 30 min was found to be 99.4% and 97.3%, respectively. After five cycles of the degradation experiment for Rh B, g-C3N4/Ag3PO4 still demonstrated stable photodegradation characteristics. The significant improvement in the photocatalytic activity and stability of g-C3N4/Ag3PO4 was attributed to the rapid charge separation between g-C3N4 and Ag3PO4 during the Z-scheme charge transfer and recombination process.

scholarly journals Highly efficient In2S3/WO3 photocatalysts: Z-scheme photocatalytic mechanism for enhanced photocatalytic water pollutant degradation under visible light irradiation

RSC Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 3333-3341
Author(s):  
Qingqing Qiu ◽  
Peng Zhu ◽  
Yao Liu ◽  
Tongxiang Liang ◽  
Tengfeng Xie ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
Rhodamine B ◽  
Light Irradiation ◽  
Pollutant Degradation ◽  
Photocatalytic Mechanism ◽  
Highly Efficient ◽  
Water Pollutant

A Z-scheme system In2S3/WO3 heterojunction was fabricated via a mild hydrothermal method and further applied for photocatalytic degradation of tetracycline (TCH) and Rhodamine B (Rh B) under visible light irradiation.

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