Abstract

The processes of photocatalytic hydrogen production from aqueous solutions of glycerol under soft UV radiation over photocatalysts based on platinized titanium dioxide were studied with varying pH of the reaction medium, substrate concentration, and radiation wavelength. It was shown that the dependence of the rate of photocatalytic hydrogen production on the substrate concentration corresponds to the Langmuir–Hinshelwood mechanism. The maximum activity in the production of hydrogen was 10.4 mmol \({\text{g}}_{{{\text{cat}}}}^{{ - 1}}{\kern 1pt} {{{\text{h}}}^{{ - 1}}}\).

中文翻译：

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反应条件对Pt / TiO 2光催化剂上甘油水溶液中氢释放速率的影响

摘要

研究了在不同的反应介质pH值，底物浓度和辐射波长的条件下，在基于铂的二氧化钛光催化剂上，在紫外光下由甘油水溶液从甘油水溶液中光催化制氢的过程。结果表明，光催化产氢速率对底物浓度的依赖性与Langmuir-Hinshelwood机理相对应。氢气产生的最大活性为10.4 mmol \（{\ text {g}} _ {{{\ text {cat}}}} ^ {{--1}} {\ kern 1pt} {{{\ text { h}}} ^ {{{-1}}} \）。