TY - JOUR
T1 - Water splitting from dye wastewater
T2 - A case study of BiOCl/copper(II) phthalocyanine composite photocatalyst
AU - Zhang, Ling
AU - Wang, Wenzhong
AU - Sun, Songmei
AU - Sun, Yuanyuan
AU - Gao, Erping
AU - Xu, Jie
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China ( 50902144 , 51272303 and 51272269 ), 973 Program ( 2013CB933203 ) and Science Foundation for Youth Scholar of State Key Laboratory of High Performance Ceramics and Superfine Microstructures ( SKL 200904 ).
PY - 2013/3/7
Y1 - 2013/3/7
N2 - Oxygen evolution is frequently the bottleneck determining the efficiency in the overall photocatalytic water splitting. Herein, for the first time overall water splitting reaction to H2 and O2 is realized on BiOCl/CuPc (copper phthalocyanine) composite from RhB (rhodamine B) solution under simulated solar light irradiation. The photosensitized RhB dye molecules supplied photo-generated holes which took part in the reaction of O2 evolution. By loading CuPc, the efficiency of H2 evolution is improved. On the base of the greatly enhanced photocurrent density, the considerable enhancement of performance can be attributed to the quick transfer of photogenerated electrons from the photosensitizer to the CB (conduction band) of BiOCl. Furthermore, as active electron traps, the oxygen vacancies on the surface of the BiOCl photocatalyst promote the separation efficiency of photo-generated electrons and holes, resulting in high photoactivity. This study presents a way that organic dye wastewater will be a useful system for the overall photocatalytic water splitting reaction to H2 and O2.
AB - Oxygen evolution is frequently the bottleneck determining the efficiency in the overall photocatalytic water splitting. Herein, for the first time overall water splitting reaction to H2 and O2 is realized on BiOCl/CuPc (copper phthalocyanine) composite from RhB (rhodamine B) solution under simulated solar light irradiation. The photosensitized RhB dye molecules supplied photo-generated holes which took part in the reaction of O2 evolution. By loading CuPc, the efficiency of H2 evolution is improved. On the base of the greatly enhanced photocurrent density, the considerable enhancement of performance can be attributed to the quick transfer of photogenerated electrons from the photosensitizer to the CB (conduction band) of BiOCl. Furthermore, as active electron traps, the oxygen vacancies on the surface of the BiOCl photocatalyst promote the separation efficiency of photo-generated electrons and holes, resulting in high photoactivity. This study presents a way that organic dye wastewater will be a useful system for the overall photocatalytic water splitting reaction to H2 and O2.
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U2 - 10.1016/j.apcatb.2012.12.003
DO - 10.1016/j.apcatb.2012.12.003
M3 - Article
AN - SCOPUS:84871838171
SN - 0926-3373
VL - 132-133
SP - 315
EP - 320
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
ER -
