Journal
APPLIED SURFACE SCIENCE
Volume 500, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2019.144059
Keywords
Bi2S3 quantum dots; Bi2S3 QDs/g-C3N4; CO2 photocatalytic reduction
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Funding
- National Key RAMP
- D Program of China [2018YFB0605002]
- National Natural Science Foundation of China [21546014, 50616114]
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Bi2S3 quantum dots (QDs) /g-C3N4 composites with various Bi2S3 QDs contents were synthesized by hydrothermal reaction method and used in CO2 photocatalytic reduction, which demonstrated much higher photocatalytic activity than pristine g-C3N4. Experimental results indicated that the 20 wt% Bi2S3 QDs/g-C3N4 showed a remarkable photocatalytic activity, which was 4 times the CO yield of that pure g-C3N4. The SEM and TEM results indicated that Bi2S3 QDs had uniformly covered the catalysts surface, which could effectively increase the absorption of visible-light and promote the separation of photogenerated carriers, thereby decrease the recombination rate of photogenerated electron-hole pairs and enhance the performance of photocatalytic reduction.
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