The results show that the prepared Au@CDs has higher photocatalytic activity for photocatalytic N2/H2O to ammonia, the yield of Au@CDs photocatalytic N2/H2O to ammonia about 3.5-fold higher than that of bare CDs. Using N2-TPD, UV-Visible, EPR, and electrochemical tests to study the photoelectric properties of the prepared photocatalysts.
The photocatalyst Au@CDs prepared by CDs coated with precious metal Au not only improves the carrier performance of the catalyst under visible light but also inhibits the recombination of photocatalyst hole pair, promote the charge transfer ability, and make the photocatalyst and hold move smoothly to the photocatalyst surface. At the same time, it also improves the adsorption and dissociation ability of N2 on the catalyst surface, thus promoting the photocatalytic N2/H2P ammonia synthesis reaction.
This work will contribute to the better design of carbon nanoparticle-coated metal-type photocatalytic materials, which will be of far-reaching significance for the further development of coal resources to prepare high-performance materials. The Xinjiang University team is currently exploring the preparation of more suitable photocatalysts to improve photocatalytic nitrogen fixation for ammonia synthesis.
This work was grateful for the financial support of the National Natural Science Foundation of China (21862020)
Corresponding author for this study is Halidan Maimaiti ([email protected]). Additional co-authors of the paper are Ying-dan Cui,Halidan Maimaiti, Shi-Xin Wang,Bo Xu,Hai-zhen Zhang and Pei-shuai Zhai.
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