文献类型：期刊文献

英文题名：Heteroatom-doped porous activated carbon from fir sawdust: Tunable pore structures for efficient CO2 and tetracycline adsorption

作者：Zhang, Wen[1] Li, Kunyang[1] Liu, Bohan[1] Xu, Wei[2] Sun, Kang[2] Yue, Yiying[1]

第一作者：Zhang, Wen

通信作者：Yue, YY[1]

机构：[1]Nanjing Forestry Univ, Coll Ecol & Environm, Nanjing 210037, Jiangsu, Peoples R China;[2]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China

年份：2026

卷号：321

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001612034600001)】；

基金：This work was financially supported by National Key Research and Development Program of China (Grant No. 2023YFD2201604) .

语种：英文

外文关键词：Activated carbon; Adsorption; Heteroatom-doped; Tetracycline; CO2

摘要：Heteroatomic doping of biomass-derived porous activated carbon significantly enhances their pollutant adsorption capabilities. In this study, we used waste fir sawdust as the raw material and employed H3PO4 and KOH as activating agents, as well as urea and thiourea as heteroatom dopants. Through optimized preparation processes, we successfully fabricated two types of porous activated carbons with distinct pore structures, which exhibited high adsorption efficiencies for carbon dioxide (CO2) and tetracycline (TC), respectively. Nitrogendoped activated carbon (NKPAC) exhibits outstanding CO2 capture performance, with a capacity of 174.47 mg/g at 298 K and 1 bar, and demonstrates excellent CO2/N2 selectivity of 47. Meanwhile, nitrogen/sulfur codoped activated carbon (NSKPAC) possesses a large specific surface area (SBET) of 2671.06 m2/g and welldeveloped porosity, achieving remarkable TC adsorption capacity of 719.4 mg/g at 318 K. Additionally, both NKPAC and NSKPAC exhibit excellent regeneration performance, demonstrating great potential for industrial applications. Density functional theory (DFT) calculations elucidated the adsorption mechanisms, revealing that nitrogen/sulfur surface functional groups enhance adsorption efficiency by modulating electron distribution. This study demonstrates an effective strategy for multi-pollutant control through precise preparation control, enabling efficient pollutant treatment and value-added utilization of waste resources.