Constructing g-C3N4/Cd1?xZnxS-Based Heterostructures for Efficient Hydrogen Production under Visible Light
نویسندگان
چکیده
Two types of photocatalysts, 1%Pt/Cd1?xZnxS/g-C3N4 (x = 0.2–0.3) and Cd1?xZnxS/1%Pt/g-C3N4 0.2–0.3), were synthesized by varying the deposition order platinum, a solid solution cadmium zinc sulfides onto surface g-C3N4. The characterization photocatalysts showed that, for 1%Pt/Cd1?xZnxS/g-C3N4, small platinum particles deposited sulfides; in case Cd1?xZnxS/1%Pt/g-C3N4, enlarged clusters located on graphitic carbon nitride. Based structure we assumed first case, type II heterojunctions and, latter S-scheme realized. activity samples was tested hydrogen evolution from triethanolamine (TEOA) basic under visible light (? 450 nm). A remarkable increase rate compared to single-phase platinized 1%Pt/Cd1?xZnxS observed only ternary with g-C3N4 surface, Cd1?xZnxS/1%Pt/g-C3N4. Thus, proved using kinetic experiments techniques composite based Cd1?xZnxS g-C3N4, formation mechanism is more favorable than that heterojunction. highest activity, 2.5 mmol H2 g?1 h?1, an apparent quantum efficiency equal 6.0% at wavelength nm achieved sample 20% Cd0.8Zn0.2S/1% Pt/g-C3N4.
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ژورنال
عنوان ژورنال: Catalysts
سال: 2021
ISSN: ['2073-4344']
DOI: https://doi.org/10.3390/catal11111340