【摘 要】
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In this paper,a photoelectrocatalytic (PEC)recovery of toxic H2S into H2 and S system was proposed using a novel bismuth oxyiodide (BiOI)/tungsten trioxide(WO3) nano-flake arrays (NFA) photoanode.The BiOI/WO3 NFA with a vertically aligned nanostructure we
【机 构】
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School of Environmental Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;
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In this paper,a photoelectrocatalytic (PEC)recovery of toxic H2S into H2 and S system was proposed using a novel bismuth oxyiodide (BiOI)/tungsten trioxide(WO3) nano-flake arrays (NFA) photoanode.The BiOI/WO3 NFA with a vertically aligned nanostructure were uniformly prepared on the conductive substrate via transformation of tungstate following an impregnating hydroxylation of BiI3.Compared to pure WO3 NFA,the BiOI/WO3 NFA promotes a significant increase of photocurrent by 200％.Owing to the excellent stability and photoactivity of the BiOI/WO3 NFA photoanode and I-/I3-catalytic system,the PEC system toward splitting of H2S totally converted S2-into S without any polysulfide(Sxn-) under solar-light irradiation.Moreover,H2 was simultaneously generated at a rate of about 0.867 mL/(h· cm).The proposed PEC H2S splitting system provides an efficient and sustainable route to recover H2 and S.
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