4.5 Review

Mineral-Supported Photocatalysts: A Review of Materials, Mechanisms and Environmental Applications

期刊

ENERGIES
卷 15, 期 15, 页码 -

出版社

MDPI
DOI: 10.3390/en15155607

关键词

photocatalysis; natural mineral support; synergistic effect; dye-sensitization

资金

  1. China Scholarship Council

向作者/读者索取更多资源

This review article discusses the progress and applications of various minerals in photocatalysis. Natural minerals, such as silicate and non-silicate minerals, offer cost-efficiency and can be hybridized with photocatalysts to produce synergistic effects. Silicate minerals, due to their unique structures and properties, can enhance adsorption capacity and photocatalytic activity. Non-silicate minerals can serve as catalyst supports and photocatalysts after modification. Dye-sensitized minerals have been proven to be superior photocatalysts. This work provides an overview of mineral-supported photocatalysts and explores the synergistic effects between different mineral substrates and photocatalysts, as well as the potential applications of natural minerals in photocatalysis.
Although they are of significant importance for environmental applications, the industrialization of photocatalytic techniques still faces many difficulties, and the most urgent concern is cost control. Natural minerals possess abundant chemical inertia and cost-efficiency, which is suitable for hybridizing with various effective photocatalysts. The use of natural minerals in photocatalytic systems can not only significantly decrease the pure photocatalyst dosage but can also produce a favorable synergistic effect between photocatalyst and mineral substrate. This review article discusses the current progress regarding the use of various mineral classes in photocatalytic applications. Owing to their unique structures, large surface area, and negatively charged surface, silicate minerals could enhance the adsorption capacity, reduce particle aggregation, and promote photogenerated electron-hole pair separation for hybrid photocatalysts. Moreover, controlling the morphology and structure properties of these materials could have a great influence on their light-harvesting ability and photocatalytic activity. Composed of silica and alumina or magnesia, some silicate minerals possess unique orderly organized porous or layered structures, which are proper templates to modify the photocatalyst framework. The non-silicate minerals (referred to carbonate and carbon-based minerals, sulfate, and sulfide minerals and other special minerals) can function not only as catalyst supports but also as photocatalysts after special modification due to their unique chemical formula and impurities. The dye-sensitized minerals, as another natural mineral application in photocatalysis, are proved to be superior photocatalysts for hydrogen evolution and wastewater treatment. This work aims to provide a complete research overview of the mineral-supported photocatalysts and summarizes the common synergistic effects between different mineral substrates and photocatalysts as well as to inspire more possibilities for natural mineral application in photocatalysis.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据