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Bio-inspired Z-scheme g-C 3 N 4/Ag 2 CrO 4 for efficient visible-light photocatalytic hydrogen generation

Bio-inspired Z-scheme g-C 3 N 4/Ag 2 CrO 4 for efficient visible-light photocatalytic hydrogen generation

Yuping Che, Bingxin Lu, Qi Qi, Huaiqiu Chang, Jin Zhai, Kefeng Wang, Zhaoyue Liu

Sci Rep. 2018 Nov 7;8(1):16504.

PMID: 30405141

Abstract:

Due to low charge separation efficiency and poor stability, it is usually difficult for single-component photocatalysts such as graphitic carbon nitride (g-C3N4) and silver chromate (Ag2CrO4) to fulfill photocatalytic hydrogen production efficiently. Z-scheme charge transport mechanism that mimics the photosynthesis in nature is an effective way to solve the above problems. Inspired by photosynthesis, we report Ag2CrO4 nanoparticles-decorated g-C3N4 nanosheet as an efficient photocatalyst for hydrogen evolution reaction (HER) with methanol as sacrificial agent. The formation of Z-scheme g-C3N4/Ag2CrO4 nanosheets photocatalysts could inhibit the recombination of photogenerated electron-hole pairs, promote the generation of hydrogen by photosplitting of water. The experiment results indicate that g-C3N4/Ag2CrO4 nanocomposites present enhanced photocatalytic activity and stability in the H2 evolution of water splitting. And the nanocomposites g-C3N4/Ag2CrO4(23.1%) show the 14 times HER efficiency compared to that of bare g-C3N4.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP7784012	Silver chromate		7784-01-2	Price

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