硫化锌镉制氢光催化剂的研究进展

Research Progress of Zinc Chromium Sulfide as Hydrogen Production Photo-catalysts

随着传统石化能源日益耗竭及其带来的环境污染增加,人们正在寻求可替代的、更为清洁的新能源。氢能因其高效、清洁以及广泛应用前景而受到普遍关注。在传统制氢技术中,使用最为广泛的是化石燃料制氢技术。但是,这种技术所造成的能耗和温室气体释放量都非常大。相比之下,光催化制氢技术则是将太阳能转化为氢能,并以化学的形式储存起来。它具有高效转换能力、零碳排放、可持续性和良好的再循环能力等优点,因此成为未来制氢的重要方向。常见的光催化剂包括TiO2、ZnO、ZrO2、CdS等多种金属氧化物和硫化物的半导体材料。其中,金属硫化物因为具有良好的可见光响应、适宜的能带结构、原料丰富和制备简单等优点,被视为一种具备良好光催化性能和实际应用前景的产氢材料。然而,金属硫化物在反应过程中易发生光生载流子复合、光腐蚀等,影响其光催化性能。本文详细阐述了光催剂硫化锌镉的光催化产氢过程,对其产氢性能以及稳定性相关研究进行了总结,并探讨了制约该技术发展的挑战和未来方向。

The increasing depletion of traditional fossil fuels and the serious environmental pollution caused by their combustion have prompted people to search for renewable and clean energy sources.As an efficient and clean energy source,hydrogen energy has attracted much attention.Among the traditional hydrogen production technologies,hydrogen production from fossil fuel is the most widely used.However,the production process causes large energy consumption and greenhouse gas generation.The photocatalytic hydrogen production technology is widely accepted as an ideal solution.It converts solar energy into hydrogen energy and stores solar energy in the form of chemical energy.The photocatalysts include titanium dioxide,zinc oxide,tin oxide,zirconium dioxide,cadmium sulfide and other oxide sulfide semiconductors,among which metal sulfides are considered as a good photocatalytic material with good visible light response,suitable energy band structure,abundant and simple preparation.However,metal sulfides tend to photocorrode during photochemical reactions,and the improvement of their activity and stability needs to be urgently investigated.The key material,the hydrogen production performance,and the stabilities are summarized.Finally,the key challenges and future development directions of photocatalytic hydrogen production technology are discussed and prospected.