在可见光下增强稳定性和光催化生产的COP修改的CdS
Zijun Li1, Yiqiao Wang1, Yongping Luo2
1College of Environment and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China. xieyu_121@163.com.
Physical chemistry chemical physics : PCCP
|July 12, 2023
概括
化 (CoP) 纳米粒子被加载到硫化 (CdS) 上,以创建一个新的光催化剂. 这显著改善了的生产和减少光电腐蚀,为高效的太阳能燃料发电提供了一个有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 光催化作用的光催化
- 可再生能源可再生能源是可再生能源.
背景情况:
- 硫化 (CdS) 由于电子孔分离和光电腐蚀差,其演变性能有限.
- 开发高效和稳定的光催化剂对于太阳能燃料生产至关重要.
研究的目的:
- 为了提高CdS的光催化活性和稳定性,用于生产气.
- 为了研究化物 (CoP) 加载对CdS的影响.
- 形成I型异质连接,以改善电荷分离.
主要方法:
- 将CoP纳米粒子加载到CdS表面,形成CoP/CdS异质连接.
- 通过在可见光下测量进化速率来描述光催化性能.
- 通过循环辐射试验评估光电腐蚀性.
主要成果:
- CoP/CdS的光电流密度增加到20μA cm-2,比CdS提高了十倍.
- 最佳10%的CoP/CdS催化剂实现了4.43 mmol g-1 h-1的演化率,比原始CdS高20.1倍.
- CoP加载显著提高了CdS的稳定性,10%的CoP/CdS催化剂在5个周期后保持了93%的性能.
结论:
- 由CoP/CdS形成的I型异质连接有效地增强了电子孔分离,并抑制了光电腐蚀.
- CoP加载是开发用于生产的高性能和稳定的光催化剂的可行策略.
- 这项研究为设计用于太阳能转换的先进催化剂提供了宝贵的见解.
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