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| Preparation and Application of N, Si Auto-doped Carbon Quantum Dots and Photocatalytic Composites |
| Received:December 03, 2024 Revised:December 24, 2024 |
| DOI：10.11981/j.issn.1000-6842.2026.01.37 |
| Key Words:N， Si auto-doped carbon quantum;bamboo pulping residues;BiOCl;tetracycline hydrochloride;photocatalysis |
| Fund Project:国家自然科学基金（32301682）；山东博士后科学基金（SDCX-ZG-202400110）。 |
| Author Name | Affiliation | Postcode | | ZHU Yawei* | 1National Key Lab for Development and Utilization of Forest Food Resources， Jiangsu Key Lab of Biomass Energy and Material， Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resource， National Forestry and Grassland Administration Key Lab of Chemical Engineering of Forest Products， National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass， Institute of Chemical Industry of Forestry Products， CAF， Nanjing， Jiangsu Province， 210042 | 210042 | | FANG Guigan | 1National Key Lab for Development and Utilization of Forest Food Resources， Jiangsu Key Lab of Biomass Energy and Material， Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resource， National Forestry and Grassland Administration Key Lab of Chemical Engineering of Forest Products， National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass， Institute of Chemical Industry of Forestry Products， CAF， Nanjing， Jiangsu Province， 210042
2Shandong Key Lab of Bio-based Material and Green Pulp Papermaking， Shandong Huatai Paper Co.， Ltd. & Shandong Yellow Triangle Biotechnology Industry Research Institute Co.， Ltd.， Dongying， Shandong Province， 257335 | 257335 | | SHEN Kuizong* | 1National Key Lab for Development and Utilization of Forest Food Resources， Jiangsu Key Lab of Biomass Energy and Material， Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resource， National Forestry and Grassland Administration Key Lab of Chemical Engineering of Forest Products， National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass， Institute of Chemical Industry of Forestry Products， CAF， Nanjing， Jiangsu Province， 210042 | 210042 | | TIAN Qingwen* | 1National Key Lab for Development and Utilization of Forest Food Resources， Jiangsu Key Lab of Biomass Energy and Material， Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resource， National Forestry and Grassland Administration Key Lab of Chemical Engineering of Forest Products， National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass， Institute of Chemical Industry of Forestry Products， CAF， Nanjing， Jiangsu Province， 210042
2Shandong Key Lab of Bio-based Material and Green Pulp Papermaking， Shandong Huatai Paper Co.， Ltd. & Shandong Yellow Triangle Biotechnology Industry Research Institute Co.， Ltd.， Dongying， Shandong Province， 257335
3College of Light Industry and Food Engineering， Guangxi Key Lab of Clean Pulp & Papermaking and Pollution Control， Guangxi University， Nanning， Guangxi Zhuang Autonomous Region， 530004 | 530004 |
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| Abstract: |
| Based on the fact that bamboo is rich in nitrogen （N） and silicon （Si）， this study utilized bamboo residue as a raw material to prepare nitrogen and silicon auto-doped bamboo-based carbon quantum dots （N， Si-CQDs） via hydrothermal method， further combined with BiOCl to form N， Si-CQDs/BiOCl composites. Compared with the residues from eucalyptus and Masson pine pulping， bamboo pulping residues exhibited a higher Si content （2.31%） and relatively higher N and O contents， highlighting their unique advantages for high-performance carbon materials preparation. The study revealed that N， Si-CQDs/BiOCl achieved a photocatalytic degradation rate of 92.5% for tetracycline hydrochloride （TCH） within 160 min， with hydroxyl radicals （·OH）， superoxide radicals （·O2-）， and holes （h+） identified as the primary active species. The auto-doping of N and Si significantly enhanced the electron transport capacity of carbon quantum dots， promoting the separation and migration of photogenerated charge carriers.The strong interaction between N， Si-CQDs and BiOCl through C—O—Bi chemical bonds enhanced the catalyst’s oxygen vacancy concentration and facilitates efficient electron transfer， thereby boosting the photocatalytic effect. |
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