Ferroelectric semiconductors for photocatalytic energy and environmental applications

Document Type

Syllabus

Publication Date

1-1-2020

Abstract

Photocatalysis is a multifaceted phenomenon that can be used for various applications, which include pollutants degradation, organic synthesis, H2 production, CO2 reduction, N2 fixation, antimicrobial applications, and biomass conversion. However, materials are key ingredients to achieve an effective photocatalytic conversion. The meticulous understanding of photocatalytic process reveals that the band edge position, bandgap energy, recombination process, and surface reactions are the four fundamental parameters that need to be controlled to enhance the efficiency of a photocatalyst. In this direction, ferroelectric materials have drawn significant interests due to their internal electrical field, surface polarization properties, and effective band-bending process, which largely govern the abovementioned properties of a photocatalyst. The phenomenon of ferroelectrics essentially helps to reduce the charge recombination possibilities in the system and effortlessly promotes the excited charge carriers to the surface with active sites. However, most of the ferroelectric photocatalysts are ultraviolet light–driven and therefore it has the scope for the bandgap reduction strategies by means of controlling particle size, doping, composite formations, etc. In this context, this chapter intends to provide insights into the various ferroelectric materials that can be used for photocatalytic applications, working mechanism, and their applications in photocatalysis along with a conclusion that highlights the future prospects in the field of ferroelectric photocatalysis.

Identifier

85126764960 (Scopus)

ISBN

[9780128190500, 9780128190494]

Publication Title

Handbook of Smart Photocatalytic Materials Environment Energy Emerging Applications and Sustainability

External Full Text Location

https://doi.org/10.1016/B978-0-12-819049-4.00002-7

First Page

3

Last Page

19

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