光催化
异质结
石墨氮化碳
氮化碳
罗丹明B
制氢
材料科学
贵金属
分解水
纳米技术
石墨烯
化学工程
化学
光电子学
催化作用
金属
工程类
冶金
生物化学
作者
Yaru Shang,Chunliang Wang,Chunshuang Yan,Fengyang Jing,Morteza Roostaeinia,Yu Wang,Gang Chen,Chade Lv
标识
DOI:10.1016/j.jcis.2022.12.039
摘要
The design of multifunctional photocatalyst with strong redox performance is the key to achieve sustainable utilization of solar energy. In this study, an elegant S-scheme heterojunction photocatalyst was constructed between metal-free graphitic carbon nitride (g-C3N4) and noble-metal-free tungsten oxide (W18O49). As-established S-scheme heterojunction photocatalyst enabled multifunctional photocatalysis behavior, including hydrogen production, degradation (Rhodamine B) and bactericidal (Escherichia coli) properties, which represented extraordinary sustainability. Finite-difference time-domain (FDTD) simulations manifested that the integration of double-layer hollow g-C3N4 nanotubes with W18O49 nanowires could expand the light harvesting ability. Demonstrated by density functional theory (DFT) calculations and electron spin resonance (ESR) measurements, the S-scheme heterojunction not only promoted the separation of carriers, but also improved the redox ability of the catalyst. This work provides a theoretical basis for enhancing the photocatalytic performances and broadening the application field of photocatalysis.
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