材料科学
光催化
罗丹明B
光电流
柠檬酸三钠
锌
纳米颗粒
纳米棒
胶体金
化学工程
分解水
兴奋剂
核化学
无机化学
纳米技术
化学
光电子学
冶金
催化作用
生物化学
工程类
作者
Juyoung Yu,Jongsung Kim
出处
期刊:Chemosphere
[Elsevier]
日期:2022-01-01
卷期号:287: 132168-132168
被引量:6
标识
DOI:10.1016/j.chemosphere.2021.132168
摘要
For the photocatalytic test, gold nanoparticles (AuNPs) were prepared using trisodium citrate dehydrate (TCD), following which they were combined on the surface of zinc oxide (ZnO) to prepare ZnO decorated with uniform AuNPs (ZnO/AuNP) photocatalysts. The photocatalytic performance with the ZnO/AuNP was estimated through the rhodamine B (RB) dye degradation under solar irradiation. ZnO/AuNP-30 showed the greatest photocatalytic performance, achieving dye degradation efficiency up to 78.65%. Photoelectrochemical (PEC) measurements were performed using the ZnO/AuNP photoanodes. With AuNP doping amounts of 10, 20, and 30 mL on the ZnO surface, photocurrent densities of 47.46, 63.74, and 68.64 mA cm-2, respectively, were achieved at an applied voltage of 1.5 V. These values indicated that the doping of AuNPs on the ZnO surface is advantageous for enhancing its PEC water-splitting activity. The highest solar-to-hydrogen (STH) efficiency is 22% with the ZnO/AuNP-30 photoanode at an applied voltage of 0.88 V. The interfacial charge-transfer resistances at the interface were 40 and 2.2 kΩ cm2 for the ZnO and ZnO/AuNP-30 photoanodes, respectively.
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