scholarly journals Sulfur-Doped BiOCl with Enhanced Light Absorption and Photocatalytic Water Oxidation Activity

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2221
Author(s):  
Ruilian Qi ◽  
Jian Liu ◽  
Huanxiang Yuan ◽  
Yu Yu
Keyword(s):  
Light Absorption ◽  
Water Oxidation ◽  
Photocatalytic Performance ◽  
Theoretical Calculations ◽  
Environmental Concerns ◽  
Oxidation Activity ◽  
Co Catalyst ◽  
Oxidation Properties ◽  
Powerful Strategy ◽  
Visible Light Photocatalytic

Photocatalysis is a powerful strategy to address energy and environmental concerns. Sulfur-doped BiOCl was prepared through a facial hydrothermal method to improve the photocatalytic performance. Experimental results and theoretical calculations demonstrated that the band structure of the sulfur-doped BiOCl was optimally regulated and the light absorption range was expanded. It showed excellent visible-light photocatalytic water oxidation properties with a rate of 141.7 μmol h−1 g−1 (almost 44 times of that of the commercial BiOCl) with Pt as co-catalyst.

Relation between Water Oxidation Activity and Coordination Environment of C,N-Coordinated Mononuclear Co Catalyst

ACS Catalysis ◽  
2021 ◽  
pp. 491-496
Author(s):  
Qing’e Huang ◽  
Binli Wang ◽  
Sheng Ye ◽  
Hua Liu ◽  
Haibo Chi ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Oxidation Activity ◽  
Co Catalyst ◽  
Coordination Environment

Enhanced visible light absorption and photocatalytic activity of [KNbO3]1−x[BaNi0.5Nb0.5O3−δ]x synthesized by sol–gel based Pechini method

RSC Advances ◽  
2016 ◽  
Vol 6 (85) ◽  
pp. 82409-82416 ◽  
Author(s):  
Ping Wu ◽  
Guoming Wang ◽  
Ruizhi Chen ◽  
Yixin Guo ◽  
Xueming Ma ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Low Temperature ◽  
Visible Light ◽  
Light Absorption ◽  
Photocatalytic Performance ◽  
Pechini Method ◽  
Sol Gel ◽  
Visible Light Absorption ◽  
Gel Method ◽  
Visible Light Photocatalytic

[KNbO3]1−x[BaNi0.5Nb0.5O3−δ]x were synthesized by Pechini sol–gel method at low temperature. Visible light photocatalytic performance of this material was evaluated.

scholarly journals A metal-free 3C-SiC/g-C3N4 composite with enhanced visible light photocatalytic activity

RSC Advances ◽  
2017 ◽  
Vol 7 (63) ◽  
pp. 40028-40033 ◽  
Author(s):  
Hao Xu ◽  
Zhixing Gan ◽  
Weiping Zhou ◽  
Zuoming Ding ◽  
Xiaowei Zhang
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Absorption ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Photogenerated Electron ◽  
Electron Hole ◽  
Visible Light Absorption ◽  
Metal Free ◽  
Visible Light Photocatalytic

Insufficient visible light absorption and fast recombination of the photogenerated electron–hole pairs have seriously hampered the photocatalytic performance of graphitic carbon nitride (g-C3N4) up to now.

Ti3C2Tx MXene decorated black phosphorus nanosheets with improved visible-light photocatalytic activity: experimental and theoretical studies

2020 ◽  
Vol 8 (10) ◽  
pp. 5171-5185 ◽  
Author(s):  
Binbin Shao ◽  
Jiajia Wang ◽  
Zhifeng Liu ◽  
Guangming Zeng ◽  
Lin Tang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Black Phosphorus ◽  
Theoretical Studies ◽  
Co Catalyst ◽  
Visible Light Photocatalytic Activity ◽  
Experimental And Theoretical Studies ◽  
Visible Light Photocatalytic

Ti3C2Tx MXenes could be as an efficient co-catalyst for enhancing the photocatalytic performance of black phosphorus nanosheets.

scholarly journals Co3O4/BiVO4 Heterostructures for Photochemical Water Oxidation: The Role of Synthesis Parameters and Preparation Route for the Physico-Chemical Properties and the Catalytic Activity

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Manuel Heimann ◽  
Klaus Friedel Ortega ◽  
Malte Behrens
Keyword(s):  
Water Oxidation ◽  
Ph Value ◽  
Chemical Properties ◽  
Catalyst Particle ◽  
Impregnation Method ◽  
Oxidation Activity ◽  
Co Catalyst ◽  
Synthesis Conditions ◽  
Vis Spectroscopy ◽  
Co Precipitation

Abstract The synthesis conditions of the semiconductor BiVO4 have marked influence on its physicochemical and photocatalytic properties. In this work, a pH-controlled co-precipitation route was systematically investigated. Special attention was paid to the pH value during co-precipitation and co-precipitate post-treatment. In a sacrificial photocatalytic water oxidation test, the highest activity was observed for a sample precipitated at pH = 1 and 70 °C, which was post treated at 600 °C in air for 3 h after washing and drying. The activity was further improved by another 90% by the addition of the Co3O4-based co-catalyst. Good synergy between semiconductor and co-catalyst was obtained for the deposition of pre-formed nanoparticles at a loading of 0.1 w% (physical impregnation). The effects of different synthesis conditions of the semiconductor and impregnation method for the co-catalyst on the structure, morphology and optical properties of the catalysts were investigated by PXRD, SEM, UV-vis spectroscopy, and TEM, while the water oxidation activity was compared in the dark and with the aid of visible light using cerium (IV) or silver (I) as sacrificial agents, respectively, with the aim of establishing structure-activity correlations. The roles of semiconductor particle anisotropy and co-catalyst particle distribution for optimal photo-activity in the oxygen evolution reaction are discussed.

scholarly journals Construction of Ag3PO4/SnO2 Heterojunction on Carbon Cloth with Enhanced Visible Light Photocatalytic Degradation

2020 ◽  
Vol 10 (9) ◽  
pp. 3238
Author(s):  
Min Liu ◽  
Guangxin Wang ◽  
Panpan Xu ◽  
Yanfeng Zhu ◽  
Wuhui Li
Keyword(s):  
Visible Light ◽  
Photocatalytic Performance ◽  
Separation Efficiency ◽  
Photogenerated Electron ◽  
Carbon Cloth ◽  
Electron Hole ◽  
Step Process ◽  
Photogenerated Electrons ◽  
Rapid Transfer ◽  
Visible Light Photocatalytic

In this study, the Ag3PO4/SnO2 heterojunction on carbon cloth (Ag3PO4/SnO2/CC) was successfully fabricated via a facile two-step process. The results showed that the Ag3PO4/SnO2/CC heterojunction exhibited a remarkable photocatalytic performance for the degradation of Rhodamine B (RhB) and methylene blue (MB), under visible light irradiation. The calculated k values for the degradation of RhB and MB over Ag3PO4/SnO2/CC are 0.04716 min−1 and 0.04916 min−1, which are higher than those calculated for the reactions over Ag3PO4/SnO2, Ag3PO4/CC and SnO2/CC, respectively. The enhanced photocatalytic activity could mainly be attributed to the improved separation efficiency of photogenerated electron-hole pairs, after the formation of the Ag3PO4/SnO2/CC heterojunction. Moreover, carbon cloth with a large specific surface area and excellent conductivity was used as the substrate, which helped to increase the contact area of dye solution with photocatalysts and the rapid transfer of photogenerated electrons. Notably, when compared with the powder catalyst, the catalysts supported on carbon cloth are easier to quickly recycle from the pollutant solution, thereby reducing the probability of recontamination.

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