Study on the microstructural evolution and photocatalytic mechanism of (Au)/PCN photocatalyst

被引：10

作者：

Guo, Zishuang ^{[1
]}

Deng, Menghui ^{[1
]}

Wang, Haiwang ^{[1
]}

Xiang, Xiao ^{[1
]}

Zhang, Chengang ^{[1
]}

Wang, Bingzhu ^{[1
,2
]}

机构：

[1] Northeastern Univ Qinhuangdao, Key Lab Dielect & Electrolyte Funct Mat Hebei Prov, Qinhuangdao 066004, Peoples R China

[2] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2024年 / 185卷

关键词：

Polymeric carbon nitride; Au ions modification; Visible light catalysis; Dye degradation; Photocatalytic hydrogen evolution; GRAPHITIC CARBON NITRIDE; GOLD NANOPARTICLES; DOPED G-C3N4; PERFORMANCE; NANOSHEETS; NANOCOMPOSITES; EFFLUENT; WATER; UREA;

D O I：

10.1016/j.jpcs.2023.111729

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper, the microstructure evolution of polymeric carbon nitride was investigated and Au ions was used to improve its photocatalytic efficiency. Their structures were investigated by FT-IR, XPS, XRD, SEM and TEM. Their specific surface area and aperture distribution were measured by BET. Meanwhile, the energy band structure and electron-hole separation efficiency were analyzed by UV-Vis and PL spectroscopy. In addition, the photocatalytic performance of the photocatalysts was assessed by photocatalytic degradation of RhB and pho-tocatalytic hydrogen evolution. The results showed that 600-PCN possessed the best photocatalytic performance, with a degradation rate of 46.92 % in 150 min. What's more, the degradation rate of RhB solution by 2 % Au/ PCN reached 47.88 %, which was 2.17 times higher than that of 550-PCN (22.01 %). During the degradation process, h+ oxidatively degrade RhB. The hydrogen production rate of 2 % Au/PCN was about 11.658 mu mol/g/h, which was 41.23 times higher than that of 550-PCN (0.282 mu mol/g/h).

引用

页数：11

共 43 条

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