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@article{ART003241587},
author={Zhiyuan Ren and Wei Chang and Ke Tian and Peiqi Yao and Bin Liu and Yunfeng Li and Runze Zhang},
title={Phosphorus-sulfur co-doped carbon nitride quantum dots for enhanced photocatalytic reduction and fluorescence detection of Cr (VI)},
journal={Carbon Letters},
issn={1976-4251},
year={2025},
volume={35},
number={3},
pages={1445-1459},
doi={10.1007/s42823-025-00878-7}

TY - JOUR
AU - Zhiyuan Ren
AU - Wei Chang
AU - Ke Tian
AU - Peiqi Yao
AU - Bin Liu
AU - Yunfeng Li
AU - Runze Zhang
TI - Phosphorus-sulfur co-doped carbon nitride quantum dots for enhanced photocatalytic reduction and fluorescence detection of Cr (VI)
JO - Carbon Letters
PY - 2025
VL - 35
IS - 3
PB - Korean Carbon Society
SP - 1445
EP - 1459
SN - 1976-4251
AB - This study details the synthesis and characterization of phosphorus-sulfur co-doped graphitic carbon nitride quantum dots (PSQ) and their integration into g-C3N4 (CN) to form PSQ/CN composites for the enhanced photocatalytic reduction of Cr(VI) and fluorescence detection. Incorporating PSQ into CN was found to significantly improve light absorption, narrow the band gap, and enhance charge separation efficiency. Notably, the composite material exhibits superior photocatalytic performance, especially in acidic environments. Photocatalytic assessments utilizing Cr(VI) demonstrated that the PSQ/CN composite outperformed both undoped and singly doped materials, indicating its superior photocatalytic activity. Additionally, phosphorus-sulfur co-doping markedly increased the fluorescence quantum yield of PSQ. The fluorescence intensity exhibited a linear decrease with increasing Cr(VI) concentrations, enabling sensitive and selective detection of Cr(VI) with a detection limit as low as 1.69 μmol/L. Collectively, the PSQ/CN composite and PSQ highlight their potential for photocatalysis and fluorescence-based detection of Cr(VI), providing high sensitivity, selectivity, and synergistic interactions within the composite material.
KW - Carbon nitride quantum dots;Photocatalytic degradation;Fluorescent;Phosphorus-sulfur co-doping
DO - 10.1007/s42823-025-00878-7
ER -

Zhiyuan Ren, Wei Chang, Ke Tian, Peiqi Yao, Bin Liu, Yunfeng Li and Runze Zhang. (2025). Phosphorus-sulfur co-doped carbon nitride quantum dots for enhanced photocatalytic reduction and fluorescence detection of Cr (VI). Carbon Letters, 35(3), 1445-1459.

Zhiyuan Ren, Wei Chang, Ke Tian, Peiqi Yao, Bin Liu, Yunfeng Li and Runze Zhang. 2025, "Phosphorus-sulfur co-doped carbon nitride quantum dots for enhanced photocatalytic reduction and fluorescence detection of Cr (VI)", Carbon Letters, vol.35, no.3 pp.1445-1459. Available from: doi:10.1007/s42823-025-00878-7

Zhiyuan Ren, Wei Chang, Ke Tian, Peiqi Yao, Bin Liu, Yunfeng Li, Runze Zhang "Phosphorus-sulfur co-doped carbon nitride quantum dots for enhanced photocatalytic reduction and fluorescence detection of Cr (VI)" Carbon Letters 35.3 pp.1445-1459 (2025) : 1445.

Zhiyuan Ren, Wei Chang, Ke Tian, Peiqi Yao, Bin Liu, Yunfeng Li, Runze Zhang. Phosphorus-sulfur co-doped carbon nitride quantum dots for enhanced photocatalytic reduction and fluorescence detection of Cr (VI). 2025; 35(3), 1445-1459. Available from: doi:10.1007/s42823-025-00878-7

Zhiyuan Ren, Wei Chang, Ke Tian, Peiqi Yao, Bin Liu, Yunfeng Li and Runze Zhang. "Phosphorus-sulfur co-doped carbon nitride quantum dots for enhanced photocatalytic reduction and fluorescence detection of Cr (VI)" Carbon Letters 35, no.3 (2025) : 1445-1459.doi: 10.1007/s42823-025-00878-7

Zhiyuan Ren; Wei Chang; Ke Tian; Peiqi Yao; Bin Liu; Yunfeng Li; Runze Zhang. Phosphorus-sulfur co-doped carbon nitride quantum dots for enhanced photocatalytic reduction and fluorescence detection of Cr (VI). Carbon Letters, 35(3), 1445-1459. doi: 10.1007/s42823-025-00878-7

Zhiyuan Ren; Wei Chang; Ke Tian; Peiqi Yao; Bin Liu; Yunfeng Li; Runze Zhang. Phosphorus-sulfur co-doped carbon nitride quantum dots for enhanced photocatalytic reduction and fluorescence detection of Cr (VI). Carbon Letters. 2025; 35(3) 1445-1459. doi: 10.1007/s42823-025-00878-7

Zhiyuan Ren, Wei Chang, Ke Tian, Peiqi Yao, Bin Liu, Yunfeng Li, Runze Zhang. Phosphorus-sulfur co-doped carbon nitride quantum dots for enhanced photocatalytic reduction and fluorescence detection of Cr (VI). 2025; 35(3), 1445-1459. Available from: doi:10.1007/s42823-025-00878-7

Zhiyuan Ren, Wei Chang, Ke Tian, Peiqi Yao, Bin Liu, Yunfeng Li and Runze Zhang. "Phosphorus-sulfur co-doped carbon nitride quantum dots for enhanced photocatalytic reduction and fluorescence detection of Cr (VI)" Carbon Letters 35, no.3 (2025) : 1445-1459.doi: 10.1007/s42823-025-00878-7