Photooxidation of biomass for sustainable chemicals and hydrogen production on graphitic carbon nitride-based materials

A comprehensive review

authored by
Mohammed Ismael, Qiaoyan Shang, Jun Yue, Michael Wark
Abstract

Photocatalytic biomass conversion is commonly recognized as one of the most favorable procedures to fabricate valuable chemicals as well as carbon-free hydrogen energy. Developing novel photocatalysts is necessary to achieve significant improvement in the target product selectivity and yield. Graphitic carbon nitride (g-C3N4) is a potential material for the photooxidation of biomass due to its intriguing physicochemical, electronic, and optical properties. In this review, we summarized the latest development in the photooxidation of lignocellulosic biomass and biomass-derived substrates such as 5-hydroxymethylfurfural (5-HMF) and sugars over g-C3N4 to produce highly value-added chemicals. This review also sheds light on the current advancement in hydrogen evolution efficiency over g–C3N4–based photocatalytic material coupled with conversion of biomass and its substrates. Herein, the properties, synthesis, morphological nanostructures, characterization, modification techniques, and photocatalytic applications of g-C3N4 photocatalysts were highlighted. Various methods for enhancing its stability, and efficiency for commercialization utilization were emphasized. Then, the process intensification aspects for the photocatalytic process over g–C3N4–based photocatalysts in continuous flow microreactors are discussed. Finally, we discussed the perspectives, challenges, and knowledge gap in the future directions for native lignocellulose biomass photocatalytic conversion and upcoming difficulties to improve the profitability and sustainability of photocatalytic hydrogen production by using metal-free g–C3N4–based photocatalytic materials.

Organisation(s)
Section Electrical Energy Storage Systems
Institute of Electric Power Systems
External Organisation(s)
University of Groningen
Shandong Normal University
Carl von Ossietzky University of Oldenburg
Type
Review article
Journal
Materials Today Sustainability
Volume
27
No. of pages
30
Publication date
09.2024
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
General Chemistry, Renewable Energy, Sustainability and the Environment, General Materials Science
Sustainable Development Goals
SDG 7 - Affordable and Clean Energy
Electronic version(s)
https://doi.org/10.1016/j.mtsust.2024.100827 (Access: Open)