One-step synthesis of K3PO4-activated phosphorus-enriched carbons for enhanced carbon capture
文献类型： 外文期刊
作者： Zhi, Yue 1 ; Yin, Yujia 1 ; Ciren, Quji 1 ; Xiao, Qiang 2 ; Zhao, Leihong 3 ; Demir, Muslum 4 ; Simsek, Utku Bulut 6 ; Hu, Xin 1 ; Wang, Linlin 7 ;
作者机构： 1.Zhejiang Normal Univ, Minist Educ Adv Catalysis Mat, Key Lab, Jinhua 321004, Zhejiang, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Inst Plant Nutr Resources & Environm, Beijing 100097, Peoples R China
3.Shanghai Jianqiao Univ, Coll Jewelry, Shanghai 201306, Peoples R China
4.Bogazici Univ, Dept Chem Engn, TR-34342 Istanbul, Turkiye
5.TUBITAK Marmara Res Ctr, Mat Inst, TR-41470 Gebze, Turkiye
6.Istanbul Aydin Univ, Anadolu BIL Vocat Sch, Dept Machine, TR-34295 Istanbul, Turkiye
7.Zhejiang Normal Univ, Coll Engn, Key Lab Urban Rail Transit Intelligent Operat & Ma, Jinhua 321004, Zhejiang, Peoples R China
关键词： Phosphorus-doped porous carbons; CO2 adsorption; Lotus petiole biomass; Tripotassium phosphate
期刊名称：JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING （ 影响因子：7.2； 五年影响因子：7.6 ）
ISSN： 2213-2929
年卷期： 2025 年 13 卷 3 期
页码：
收录情况： SCI
摘要： To date, most studies on porous carbon have focused on enhancing COQ uptake capacity by decorating the carbon surface with nitrogen (N) or sulfur (S) functional groups. However, a literature survey reveals a notable gap in research on phosphorus (P)-doped porous carbon for surface modification. To address this gap, the present study focuses on the synthesis of P-decorated carbons using lotus petiole biomass as a renewable and sustainable precursor. This was achieved through a single-step process involving P-doping and chemical activation with tripotassium phosphate (K3PO4) of carbonized lotus petiole at elevated temperatures. The resulting P-doped porous carbons exhibited advanced textural properties, with a maximum surface area of 472 m2/g, a total pore volume of 0.27 cm3 /g, and phosphorus doping of up to 4.63 wt%. The optimal carbon-based adsorbent demonstrated COQ adsorption capacities of 2.57 mmol/g at 25 degrees C and 3.36 mmol/g at 0 degrees C under 1 bar pressure. Additionally, the materials showed excellent durability, exhibiting almost no change in performance after consecutive adsorption-desorption cycles. These P-doped porous carbons also displayed high COQ/NQselectivity, moderate heat of adsorption, rapid adsorption kinetics, and outstanding dynamic COQ capture performance under continuous gas flow conditions. This study provides a novel and sustainable approach to converting lotus petioles into high-performance adsorbents, with significant implications for achieving carbon neutrality and advancing environmental sustainability.
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