4.6 Article

Sustainable Hydrogen Production from Starch Aqueous Suspensions over a Cd0.7Zn0.3S-Based Photocatalyst

期刊

CATALYSTS
卷 11, 期 7, 页码 -

出版社

MDPI
DOI: 10.3390/catal11070870

关键词

photocatalysis; hydrogen production; cadmium sulfide; zinc sulfide; starch hydrolysis; visible light; photoreforming

资金

  1. RFBR [19-33-90110]
  2. Ministry of Science and Higher Education of the Russian Federation [AAAA-A21-121011390009-1]

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The photoreforming of rice and corn starch with simultaneous hydrogen production was investigated over a Cd0.7Zn0.3S-based photocatalyst under visible light irradiation. The study focused on the influence of starch pretreatment conditions on the reaction rate. The maximum rate of H-2 evolution was found to be 730 mu mol h(-1) g(-1) in the solution obtained after starch hydrolysis in 5 M NaOH at 70 degrees C.
We explored the photoreforming of rice and corn starch with simultaneous hydrogen production over a Cd0.7Zn0.3S-based photocatalyst under visible light irradiation. The photocatalyst was characterized by UV-vis diffuse reflectance spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The influence of starch pretreatment conditions, such as hydrolysis temperature and alkaline concentration, on the reaction rate was studied. The maximum rate of H-2 evolution was 730 mu mol center dot h(-1)center dot g(-1), with AQE = 1.8% at 450 nm, in the solution obtained after starch hydrolysis in 5 M NaOH at 70 degrees C. The composition of the aqueous phase of the suspension before and after the photocatalytic reaction was studied via high-performance liquid chromatography, and such products as glucose and sodium gluconate, acetate, formate, glycolate, and lactate were found after the photocatalytic reaction.

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