Efficient hydrogen peroxide generation via biomass-derived carbon dots/graphitic carbon nitride S-scheme Heterostructures under visible light in pure water systems

Suchang Zou; Haoyuan Qin; Yuanhao Tang; Kaiqu Sun; Lei Sun; Bo Xiong; Lijing Wang; Weilong Shi; Chunsheng Li; Feng Guo

doi:10.1016/j.jcis.2025.138282

Efficient hydrogen peroxide generation via biomass-derived carbon dots/graphitic carbon nitride S-scheme Heterostructures under visible light in pure water systems

J Colloid Interface Sci. 2025 Jun 25;699(Pt 2):138282. doi: 10.1016/j.jcis.2025.138282. Online ahead of print.

Authors

Suchang Zou¹, Haoyuan Qin¹, Yuanhao Tang¹, Kaiqu Sun¹, Lei Sun¹, Bo Xiong², Lijing Wang³, Weilong Shi⁴, Chunsheng Li⁵, Feng Guo⁶

Affiliations

¹ School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China.
² School of Chemistry and Materials Science, Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan 432000, China.
³ Henan Engineering Center of New Energy Battery Materials, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, China.
⁴ School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China; Jiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China. Electronic address: shiwl@just.edu.cn.
⁵ Key Laboratory of Advanced Electrode Materials for Novel Solar Cells for Petroleum and Chemical Industry of China School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou City, Jiangsu Province 215009, China. Electronic address: lichsheng@163.com.
⁶ School of Energy and Power, Jiangsu University of Science and Technology, Zhenjiang 212100, China,. Electronic address: gfeng0105@126.com.

PMID: 40602280
DOI: 10.1016/j.jcis.2025.138282

Abstract

Homogeneous photocatalysts exhibit excellent performance in the photocatalytic reaction due to their uniform distribution. However, for the same reason, separating or recovering the catalyst after the reaction is completed is a significant challenge currently faced. Herein, by utilizing discarded shuttlecock feathers as a carbon source, homogeneous nitrogen and sulfur co-doped biomass carbon dots (N, S-CDs) were prepared and anchored on cyano-deficient carbon nitride (CCN), forming an efficient heterogeneous photocatalytic system, thereby achieving separation and recovery of N, S-CDs while significantly enhancing the photocatalytic hydrogen peroxide (H₂O₂) production performance of both components through the synergistic interaction of the S-scheme heterojunction. Experimental results displayed that 7 % N, S-CDs/CCN exhibited the highest H₂O₂ production in pure water, reaching 139.78 μM, and maintained high photocatalytic activity for 7 cycles after separated and recovered. This research presents a design idea for the recovery of homogeneous photocatalysts and improvement of photocatalytic activity.

Keywords: Biomass carbon dots; Carbon nitride; H(2)O(2) production; Heterogeneous photocatalysis; S-scheme heterojunction.