Photocatalysis has been considered as one of the most promising technologies for solving environmental pollution and energy crisis. However, photocatalysts in the powder form usually suffer from the strong tendency to agglomerate and intricate operation for recycling, which significantly limit their practical application. In comparison, monolithic aerogel photocatalysts with their highly macroscopic operability and recoverability as well as impressive specific surface area have attracted tremendous attention in recent years. With the development of synthesis technology, the types of aerogel photocatalysts have broadened from traditional oxide and chalcogenide aerogels to the current composite aerogels. Meanwhile, their application has also spread from primary physical adsorption to the present photochemical reactions including environmental remediation and clean energy production. In this review, the different synthesis strategies and photocatalytic applications of aerogel photocatalysts have been discussed. We summarize the currently available synthesis methods and widespread applications of aerogel photocatalysts. In particular, we highlight recent developments for the assembling of aerogel photocatalysts by direct synthesis and grafting photocatalysts to aerogel supports, as well as updated applications on the removal of aqueous pollutants, water splitting and gas phase photocatalysis. Finally, we outline the challenges and potential advances associated with the aerogel photocatalysts for future scientific research and commercial applications.

中文翻译：

---

整体式气凝胶光催化剂：综述

光催化被认为是解决环境污染和能源危机的最有前途的技术之一。然而，粉末形式的光催化剂通常具有强烈的附聚趋势和复杂的回收利用趋势，这大大限制了它们的实际应用。相比之下，近年来，整体式气凝胶光催化剂具有高度的宏观可操作性和可回收性以及令人印象深刻的比表面积，引起了极大的关注。随着合成技术的发展，气凝胶光催化剂的类型已从传统的氧化物和硫属化物气凝胶扩展到目前的复合气凝胶。同时，它们的应用也已从主要的物理吸附作用扩展到目前的光化学反应，包括环境修复和清洁能源生产。在这篇综述中，讨论了气凝胶光催化剂的不同合成策略和光催化应用。我们总结了气凝胶光催化剂的当前可用的合成方法和广泛的应用。特别是，我们重点介绍了通过直接合成和将光催化剂接枝到气凝胶载体上来组装气凝胶光催化剂的最新进展，以及在去除水污染物，水分解和气相光催化方面的最新应用。最后，我们概述了气凝胶光催化剂在未来科学研究和商业应用中所面临的挑战和潜在的进展。