Influence of cobalt phthalocyanine: Deposited onto the particles of mixed Cd/CuxS suspensions on photocatalytic evolution of hydrogen from aqueous solutions of Na2S |
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| Authors: | E N Savinov Lu Gongxuan and V N Parmon |
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| Institution: | (1) Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation;(2) Lanzhou Institute of Chemical Physics, P.R. China |
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| Abstract: | Deposition of water-insoluble cobalt phthalocyanine CoPc onto the particles of mixed suspensions of CdS and CuxS can increase the rate of photoinduced evolution of H2 from Na2S and Na2SO3 solutions. At Na2S]=5×10–2 M, the rate of photocatalytic reaction is almost doubled upon deposition of 6.4×10–10 mol CoPc onto 4×10–5 mol of CdS and of 2.9×10–8 mol of CoPc onto 10–5 mol of CuxS. At Na2S]=10–1 M, which is close to the optimal concentration of Na2S, the deposition of CoPc can provide only a 30% increase of the reaction rate.
         ,              CoPc     CdS/CuxS   H2 Na2S Na2SO3.  Na2S=5·10–2 M 6.4·10–10 CoPc 4·10–5 CdS 2.9·10–8 CoPc 10–5 CuxS. Na2S=10–1 M, CoPc 30%  .
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