Composite Sulfide Photocatalyst of CuχS·CdS Interface-Modified with Cobalt Phthalocyanine | Sciact - CRIS-system of Boreskov Institute of Catalysis

Composite Sulfide Photocatalyst of CuχS·CdS Interface-Modified with Cobalt Phthalocyanine Full article

Journal

Acta Physico - Chimica Sinica
ISSN: 1000-6818 , E-ISSN: 1872-1508

Output data

Year: 1994, Volume: 10, Number: 9, Pages: 790-795 Pages count : 6 DOI: 10.3866/PKU.WHXB19940905

Tags

CoPc; Composite sulfide; Interface modification; Microheterojunction; Photocatalyst

Authors

Lu Gongxuan ¹ , Li Shuben ¹ , Savinov E.N. ² , Parmon V.N. ²

Affiliations

1	State Key Laboratory of Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000
2	Boreskov Institute of Catalysis, Russia Academy of Sciences, Novosibirsk, 630090, Russia

A new kind of modification photocatalyst has been synthesized by coating CoPc on the interface CuxS and CdS. The photocatalytic activity for hydrogen generation from H2S decomposition has been investigated in aqueous suspension. Interaction between CoPc molecule and semiconductor, as well as its influence on photocatalytic ability have also been studied. The results proved that CoPc coating could markedly enhance the photoactivity of the semiconductor for H2S decomposition with the reaction rate of 2-3 time higher. The unlinear photoactivity increase was observed at different CoPc coating concentration. Furthermore, the photoactivity was dependent on the preparation method of catalyst. CoPc dependence appears to be more pronounced if coating CoPc on CuxS surface first. Photoactivity is not proportional to the concentration of the substrate, in the lower concentration range, CoPc coating effect is more pronounced. It was shown that catalyst activity increased markedly if using CoPc DMF solution with 10-5 mol•L-1 Cu2+ion. The reason proposed is that the catalyst absorption has shifted to longer wavelength range with CuPc formed by exchanging of Cu2+ ion and Co2+ ion. The possible mechanism has been also discussed.

Lu G. , Li S. , Savinov E.N. , Parmon V.N.
Composite Sulfide Photocatalyst of CuχS·CdS Interface-Modified with Cobalt Phthalocyanine

Acta Physico - Chimica Sinica. 1994. V.10. N9. P.790-795. DOI: 10.3866/PKU.WHXB19940905 WOS РИНЦ ANCAN OpenAlex

Full text from publisher

Submitted:	Apr 6, 1993
Accepted:	Aug 10, 1993

Web of science:	WOS:000207589600005
Elibrary:	30705980
Chemical Abstracts:	1994:659543
Chemical Abstracts (print):	121:259543
OpenAlex:	W3032957185

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