Well-graphitized graphene as photoinduced charge transport channel for improving the photocatalytic activity of AgBr

2013 ◽  
Vol 37 (6) ◽  
pp. 1797 ◽  
Author(s):  
Junfei Liang ◽  
Hua Wang ◽  
Lidong Li ◽  
Yue Xu ◽  
Lin Guo
Author(s):  
Liyan Yang ◽  
Jinzhao Qin ◽  
Sunsun Li ◽  
Jianqi Zhang ◽  
Yang Yang ◽  
...  

2020 ◽  
Vol 303 ◽  
pp. 112594 ◽  
Author(s):  
Hongbo Wang ◽  
Dongpeng Zhao ◽  
Peng Song ◽  
Fengcai Ma ◽  
Yuanzuo Li

2020 ◽  
Vol 11 ◽  
pp. 407-416 ◽  
Author(s):  
Changqiang Yu ◽  
Min Wen ◽  
Zhen Tong ◽  
Shuhua Li ◽  
Yanhong Yin ◽  
...  

Photocatalysis is considered to be a green and promising technology for transforming organic contaminants into nontoxic products. In this work, a CuO/tourmaline composite with zero-dimensional/two-dimensional (0D/2D) CuO architecture was successfully obtained via a facile hydrothermal process, and its photocatalytic activity was evaluated by the degradation of methylene blue (MB). Surface element valence state and molecular vibration characterization revealed that CuO chemically interacted with tourmaline via Si–O–Cu bonds. The specific surface area of the CuO/tourmaline composite (23.60 m2 g−1) was larger than that of the pristine CuO sample (3.41 m2 g−1). The CuO/tourmaline composite exhibited excellent photocatalytic activity for the degradation of MB, which was ascribed to the increase in the quantity of the adsorption-photoreactive sites and the efficient utilization of the photoinduced charge carriers. This study provides a facile strategy for the construction of 0D/2D CuO structures and the design of tourmaline-based functional composite photocatalysts for the treatment of organic contaminants in water.


2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Juan Zhou ◽  
Guohui Tian ◽  
Yajie Chen ◽  
Yunhan Shi ◽  
Chungui Tian ◽  
...  

Abstract Core/shell heterostructure composite has great potential applications in photocatalytic field because the introduction of core can remarkably improve charge transport and enhance the electron-hole separation. Herein, hierarchical Bi2S3/In2S3 core/shell structured microspheres were prepared via a simple one-pot hydrothermal process based on different growth rate of the two kinds of sulphides. The results showed that, the as-prepared hierarchical Bi2S3/In2S3 core/shell heterostructure exhibits significant visible light photocatalytic activity for degradation of 2, 4-dichlorophenol. The introduction of Bi2S3 core can not only improve charge transport and enhance the electron-hole separation, but also broaden the visible light response. The hierarchical porous folwer-like shell of In2S3 could increase the specific surface area and remarkably enhanced the chemical stability of Bi2S3 against oxidation.


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