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2020 | OriginalPaper | Chapter

3. Biomass-Based Photocatalysts for Environmental Applications

Authors : Yean Ling Pang, Chin Woei Lim, Katrina Pui Yee Shak, Steven Lim, Wai Chong Cheam, Chai Hoon Koo, Ahmad Zuhairi Abdullah

Published in: Nanophotocatalysis and Environmental Applications

Publisher: Springer International Publishing

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Abstract

In recent years, advanced oxidation process has shown a new frontier environmental friendly and sustainable wastewater treatment technology to replace the conventional treatment methods. Heterogeneous photocatalysis is a promising approach in environmental remediation. Among the popular photocatalysts, semiconductor oxide photocatalysts have been widely explored due to their durability and chemical and physical properties. However, the practical application of semiconductor oxide is limited because of its expensive cost, large bandgap energy and rapid recombination of the photoinduced electron-hole pairs. This chapter addresses the main advancements in overcoming the barriers accompanied by pure semiconductor oxide by incorporating with biomass-derived carbonaceous materials for fabrication of effective visible light-responsive semiconductor oxide-based photocatalysts.
The utilization of these biomass-derived photocatalysts provides a greener synthesis route for environmental purifications. This chapter firstly highlights the types, properties and conversion of biomass into biochar, activated carbon (AC) or any other carbonaceous materials. The general methods for preparing biomass-based support and the mechanisms are also presented in details. Finally, the latest research papers on modification or functionalization of a biomass-based photocatalyst for the removal of organic pollutants have also been comprehensively discussed. There is still a lack of published information on the fundamental knowledge of biomass-derived photocatalyst to understand the complex photocatalytic mechanisms especially on the reactions occurring on the heterogeneous biomass surfaces. Therefore, further theories and hypotheses need to be investigated to fill these gaps in order to address all full potentials of the biomass-derived photocatalyst for environmental applications.

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Metadata
Title
Biomass-Based Photocatalysts for Environmental Applications
Authors
Yean Ling Pang
Chin Woei Lim
Katrina Pui Yee Shak
Steven Lim
Wai Chong Cheam
Chai Hoon Koo
Ahmad Zuhairi Abdullah
Copyright Year
2020
DOI
https://doi.org/10.1007/978-3-030-12619-3_3