Water Purification Using Subnanostructured Photocatalysts

Title

Water Purification Using Subnanostructured Photocatalysts

Creator

Devi K.R.S.; Pinheiro D.; Reghunath S.

Description

Visible light is an abundant resource, and photocatalysts absorb this light and use it to energize chemical reactions. Of the many types of reactions that are catalyzed by photocatalysts, wastewater purification is an important area. Photocatalysis is an economical, eco-friendly, and sustainable method of purifying water, a precious resource for which need is increasing while availability is shrinking. Of the several types of photocatalytic materials available, atomically dispersed metals and metal oxides appear to be the most promising. In conventional materials, the efficiency of utilization of active photocatalytic material is rather poor because only a small fraction of those present on the surface can serve as active materials. As the particle size decreases, this efficiency increases. In this respect, subnanometric catalysts such as single-site heterogeneous catalysts, atomically dispersed catalysts, and single-atom catalysts have distinct advantages when compared with their bulk and nanometric counterparts. The challenges in preparing stable single-atom catalysts have largely been overcome, and several methods are now available for their preparation. Many atomically dispersed photocatalytic materials have been synthesized, and many new insights have been gained, unlocking the tremendous potential in purifying wastewater by utilizing solar radiation. The aspects of higher activity, improved selectivity, economical use of materials, and a better understanding of the structure-activity relationship offered by subnanometric photocatalysts have been explored in this chapter. 2020 American Chemical Society.

Source

ACS Symposium Series, Vol-1360, pp. 189-225.

Date

2020-01-01

Publisher

American Chemical Society

Coverage

Devi K.R.S., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, Karnataka, 560029, India; Pinheiro D., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, Karnataka, 560029, India; Reghunath S., Department of Chemistry, CHRIST (Deemed to be University), Bangalore, Karnataka, 560029, India

Rights

Restricted Access

Relation

ISSN: 976156; CODEN: ACSMC

Format

Online

Language

English

Type

Book chapter

Identifier

https://doi.org/10.1021/bk-2020-1360.ch008

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