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@article{ART002958896},
author={Jin Tao and Liu Chengbao and Chen Feng and Qian Junchao and Qiu Yongbin and Meng Xianrong and Chen Zhigang},
title={Synthesis of g-C3N4/CQDs composite and its photocatalytic degradation property for Rhodamine B},
journal={Carbon Letters},
issn={1976-4251},
year={2022},
volume={32},
number={6},
pages={1451-1462},
doi={10.1007/s42823-022-00382-2}

TY - JOUR
AU - Jin Tao
AU - Liu Chengbao
AU - Chen Feng
AU - Qian Junchao
AU - Qiu Yongbin
AU - Meng Xianrong
AU - Chen Zhigang
TI - Synthesis of g-C3N4/CQDs composite and its photocatalytic degradation property for Rhodamine B
JO - Carbon Letters
PY - 2022
VL - 32
IS - 6
PB - Korean Carbon Society
SP - 1451
EP - 1462
SN - 1976-4251
AB - To solve the problem of water pollution, researchers have proposed a photocatalytic degradation technology, in which the key factor is the development of efficient photocatalytic materials. Graphitic carbon nitride (g-C3N4), an n-type semiconductor, has been widely studied due to its suitable band gap (2.7 eV), low cost, easy preparation, non-toxicity, and high photostability. However, the pure-phase g-C3N4 still has defects such as low specific surface area, insufficient visible light absorption, low charge mobility, few active sites for interfacial reaction, and easy recombination of photogenerated electron–hole pairs, which leads to the lower photocatalytic activity of g-C3N4. Aiming at the problems mentioned above, this paper focus on the synthesis of g-C3N4-based composites with high photocatalytic activity via lemon juice induction method. Thiourea and lemon juice were selected as precursors, and carbon quantum dots (CQDs) as electron mediators were introduced anchoring on the surface of g-C3N4 to build g-C3N4/CQDs with compact interface. The results showed that small-sized CQDs are uniformly distributed on the surface of g-C3N4, and the g-C3N4/CQDs composite has a 2D0D structure, which reduces the recombination of photogenerated electron–hole pairs. The photocatalytic degradation efficiency of 4% g-C3N4/CQDs for RhB reaches the highest data of 90.9%, and the photocatalytic degradation rate is 0.016 min−1, which is about 2.3 times that of g-C3N4. After four cycles of photocatalytic reaction, the photocatalytic degradation efficiency of the material remained at 81.7%. Therefore, the g-C3N4/CQDs synthesized via lemon juice induction has a more stable microstructure, and the charge separation efficiency is greatly improved, which is suitable for practical photocatalytic environmental protection.
KW - Graphitic carbon nitride;Carbon quantum dots;Composite materials;Nanosize;Photocatalytic degradation
DO - 10.1007/s42823-022-00382-2
ER -

Jin Tao, Liu Chengbao, Chen Feng, Qian Junchao, Qiu Yongbin, Meng Xianrong and Chen Zhigang. (2022). Synthesis of g-C3N4/CQDs composite and its photocatalytic degradation property for Rhodamine B. Carbon Letters, 32(6), 1451-1462.

Jin Tao, Liu Chengbao, Chen Feng, Qian Junchao, Qiu Yongbin, Meng Xianrong and Chen Zhigang. 2022, "Synthesis of g-C3N4/CQDs composite and its photocatalytic degradation property for Rhodamine B", Carbon Letters, vol.32, no.6 pp.1451-1462. Available from: doi:10.1007/s42823-022-00382-2

Jin Tao, Liu Chengbao, Chen Feng, Qian Junchao, Qiu Yongbin, Meng Xianrong, Chen Zhigang "Synthesis of g-C3N4/CQDs composite and its photocatalytic degradation property for Rhodamine B" Carbon Letters 32.6 pp.1451-1462 (2022) : 1451.

Jin Tao, Liu Chengbao, Chen Feng, Qian Junchao, Qiu Yongbin, Meng Xianrong, Chen Zhigang. Synthesis of g-C3N4/CQDs composite and its photocatalytic degradation property for Rhodamine B. 2022; 32(6), 1451-1462. Available from: doi:10.1007/s42823-022-00382-2

Jin Tao, Liu Chengbao, Chen Feng, Qian Junchao, Qiu Yongbin, Meng Xianrong and Chen Zhigang. "Synthesis of g-C3N4/CQDs composite and its photocatalytic degradation property for Rhodamine B" Carbon Letters 32, no.6 (2022) : 1451-1462.doi: 10.1007/s42823-022-00382-2

Jin Tao; Liu Chengbao; Chen Feng; Qian Junchao; Qiu Yongbin; Meng Xianrong; Chen Zhigang. Synthesis of g-C3N4/CQDs composite and its photocatalytic degradation property for Rhodamine B. Carbon Letters, 32(6), 1451-1462. doi: 10.1007/s42823-022-00382-2

Jin Tao; Liu Chengbao; Chen Feng; Qian Junchao; Qiu Yongbin; Meng Xianrong; Chen Zhigang. Synthesis of g-C3N4/CQDs composite and its photocatalytic degradation property for Rhodamine B. Carbon Letters. 2022; 32(6) 1451-1462. doi: 10.1007/s42823-022-00382-2

Jin Tao, Liu Chengbao, Chen Feng, Qian Junchao, Qiu Yongbin, Meng Xianrong, Chen Zhigang. Synthesis of g-C3N4/CQDs composite and its photocatalytic degradation property for Rhodamine B. 2022; 32(6), 1451-1462. Available from: doi:10.1007/s42823-022-00382-2

Jin Tao, Liu Chengbao, Chen Feng, Qian Junchao, Qiu Yongbin, Meng Xianrong and Chen Zhigang. "Synthesis of g-C3N4/CQDs composite and its photocatalytic degradation property for Rhodamine B" Carbon Letters 32, no.6 (2022) : 1451-1462.doi: 10.1007/s42823-022-00382-2