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Shining photocatalysis by gold-based nanomaterials
Nano Energy ( IF 16.8 ) Pub Date : 2021-07-02 , DOI: 10.1016/j.nanoen.2021.106306
Haiguang Zhu 1 , Xun Yuan 1 , Qiaofeng Yao 2 , Jianping Xie 2, 3
Affiliation  

As an environmentally friendly technology, photocatalysis has been widely used in many fields. Currently, the drawbacks of pristine semiconductors as traditional photocatalysts include poor light harvesting, rapid recombination of charge carriers, and insufficient active surface centers, which largely limit their photocatalytic performance. These technical issues can be well addressed by decorating gold (Au) nanomaterials, including large Au nanoparticles (NPs, >3 nm) and ultrasmall Au nanoclusters (NCs, <3 nm). This Review first briefly introduces photocatalysis by deciphering the photocatalytic process into three consecutive steps: (I) light absorption, (II) charge separation/migration, and (III) surface reactions, with an emphasis on key limitations of each step. Afterwards, we briefly discuss the main synthetic strategies of Au nanomaterials-modified semiconductor photocatalysts (Au-modified photocatalysts for short), and explain how Au nanomaterials can address the above-mentioned technical issues in each photocatalytic step. Subsequently, we highlight several advanced characterization techniques for photocatalysis, which would be useful for elucidating the photocatalytic mechanisms. Finally, we exemplify the applications of Au-modified photocatalysts in energy conversion, environmental remediation, and organic chemistry. This review concludes with a summary and our perspectives on the design and development of high-performance metal-modified photocatalysts in various application fields.



中文翻译:

金基纳米材料的光催化作用

光催化作为一种​​环保技术,已被广泛应用于许多领域。目前,原始半导体作为传统光催化剂的缺点包括光收集差、载流子快速复合和活性表面中心不足,这在很大程度上限制了它们的光催化性能。这些技术问题可以通过装饰金 (Au) 纳米材料得到很好的解决,包括大 Au 纳米颗粒(NPs,> 3 nm)和超小 Au 纳米团簇(NCs,<3 nm)。本综述首先通过将光催化过程解读为三个连续步骤来简要介绍光催化:(I) 光吸收、(II) 电荷分离/迁移和 (III) 表面反应,并强调每个步骤的关键局限性。然后,我们简要讨论了 Au 纳米材料修饰的半导体光催化剂(简称 Au 修饰的光催化剂)的主要合成策略,并解释了 Au 纳米材料如何在每个光催化步骤中解决上述技术问题。随后,我们重点介绍了几种先进的光催化表征技术,这将有助于阐明光催化机制。最后,我们举例说明了 Au 改性光催化剂在能量转换、环境修复和有机化学中的应用。本综述最后总结了我们对各种应用领域中高性能金属改性光催化剂的设计和开发的看法。并解释金纳米材料如何在每个光催化步骤中解决上述技术问题。随后,我们重点介绍了几种先进的光催化表征技术,这将有助于阐明光催化机制。最后,我们举例说明了 Au 改性光催化剂在能量转换、环境修复和有机化学中的应用。本综述最后总结了我们对各种应用领域中高性能金属改性光催化剂的设计和开发的看法。并解释金纳米材料如何在每个光催化步骤中解决上述技术问题。随后,我们重点介绍了几种先进的光催化表征技术,这将有助于阐明光催化机制。最后,我们举例说明了 Au 改性光催化剂在能量转换、环境修复和有机化学中的应用。本综述最后总结了我们对各种应用领域中高性能金属改性光催化剂的设计和开发的看法。我们举例说明了 Au 改性光催化剂在能量转换、环境修复和有机化学中的应用。本综述最后总结了我们对各种应用领域中高性能金属改性光催化剂的设计和开发的看法。我们举例说明了 Au 改性光催化剂在能量转换、环境修复和有机化学中的应用。本综述最后总结了我们对各种应用领域中高性能金属改性光催化剂的设计和开发的看法。

更新日期:2021-07-07
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