Fabrication of Z-scheme CdS/H5PMo10V2O40/g-C3N4 for the photocatalytic depolymerization of lignin into aromatic monomers

Z-scheme heterojunction g-C3N4/CQD/CdZnS with high redox capability for enhancing visible light-driven photocatalytic depolymerization of lignin into aromatic monomers

“…39 The peak of π excitation of 10% CN/5CQDs/CZS enhanced significantly, verifying a strong interaction between CZS and CN attributed in the π-conjugated structure. 40 Compared with CN, both the binding energies of C 1s and N 1s in 10% CN/5CQDs/CZS shift slightly to the lower binging energy direction, suggesting that the interfacial electron transfer occurred between CN and CZS. As shown in Fig.…”

Controllable selectivity of carboxylic acids produced by H3+n[PMo12‐nVnO40]‐catalyzed oxidation of lignite and its oxidative mechanism analysis

“…Herein, it should be stated that the generation of •O 2 À during HPA-catalysed oxidation is the first step, and then •OH as the main active species is formed in water under the action of •O 2 À and further facilitates the depolymerization and oxidation of lignite. [31] Overall, molecular oxygen and water paly the crucial roles in HPA-catalysed oxidation of lignite.…”

CdS–SH/TiO2 Heterojunction Photocatalyst Significantly Improves Selectivity for C–O Bond Breaking in Lignin Models

“…Lignin is an aromatic polymer consisting of three phenylpropane units connected in a disordered manner by C–C and C–O bonds and is the only renewable aromatic resource that exists in nature. − However, the underutilization and inherent resistance to biodegradation of lignin contribute to environmental pollution and the squandering of valuable renewable sources. , In recent years, many lignin depolymerization processes, including noncatalytic, catalytic pyrolysis, enzymolysis, catalytic depolymerization, and oxidation, have grown rapidly, wherein catalytic chemical conversion with the assistance of various catalysts is a very competitive method due to its exceptional selectivity and conversion efficiency . Photocatalysis strategies that can achieve selective reactions under mild conditions are receiving increasing attention. − The CdS photocatalyst possesses a narrow band gap (2.4 eV) and a wide visible light absorption range, making it a promising semiconductor material for the photocatalytic conversion of lignin. − However, the catalytic performance of the CdS photocatalyst is constrained by its relatively small specific surface area and short carrier lifetime, which limit its overall effectiveness. Several works , have been conducted to explore surface modifications of CdS.…”