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Ternary deep eutectic solvent-mediated one-pot solvothermal synthesis of biocarbon sheet-supported La2(CO3)3 nanowire with antibacterial activity for advanced phosphate adsorption

文献类型： 外文期刊

作者： Yang, Lijun 1 ; Shen, Yiyi 1 ; He, Xiaotong 1 ; Xu, Zhixiang 3 ; Shen, Feng 4 ; Dai, Lichun 1 ;

作者机构： 1.Minist Agr & Rural Affairs, Biogas Inst, Key Lab Dev & Applicat Rural Renewable Energy, Sect 4 13,Renmin South Rd, Chengdu 610041, Sichuan, Peoples R China

2.Chinese Acad Agr Sci, Res Ctr Rural Energy & Ecol, Chengdu 610041, Sichuan, Peoples R China

3.Jiangsu Univ, Sch Energy & Power Engn, Zhenjiang 212013, Peoples R China

4.Chinese Acad Agr Sci, Agroenvironm Protect Inst, 31 Fukang Rd, Tianjin 300191, Peoples R China

关键词： Deep eutectic solvent; Solvothermal synthesis; Carbon sheet; Lanthanum carbonate; Advanced phosphate adsorption

期刊名称：ADVANCED COMPOSITES AND HYBRID MATERIALS （ 影响因子：21.8； 五年影响因子：16.8 ）

ISSN： 2522-0128

年卷期： 2025 年 8 卷 4 期

页码：

收录情况： SCI

摘要： Biocarbon-supported lanthanum-based materials have garnered extensive attention in phosphate adsorption. Among diverse La species, lanthanum carbonate (LC) possesses balanced properties in phosphate affinity, biocompatibility, and stability. However, direct one-pot synthesis of positively charged biocarbon and simultaneous assembly of LC on the biocarbon is challenging. Herein, a ternary deep eutectic solvent (DES) composed of glucose, urea, and LaCl3 was applied as the precursor and medium for the one-pot solvothermal synthesis of biocarbon sheet (BCS)-supported La-2(CO3)(3) nanowire (BCS-LC). The as-prepared BCS-LC possesses a 2D lamellar structure with dispersed La-2(CO3)(3) nanowire. The as-prepared BCS-LC is highly efficient in removing phosphorus from biogas effluent (from 83 to < 0.05 mg/L, around 99.9% removal) and natural pond water (from 5.1 to < 0.05 mg/L, > 99% removal) at 1 g/L dosage, which is superior for phosphate adsorption from practical solutions with complex co-existing substances or low phosphate concentration. The phosphate adsorption by BCS-LC is dominated by ligand exchange-induced inner-sphere complexation. DFT calculations further validate the favorable role of nitrogen-containing functional groups on the biocarbon sheet for enhancing affinity to phosphate anions. Furthermore, attributed to the nanowire morphology of LC, the as-prepared BCS-LC is high-efficient in inactivating S. aureus (with a 99.99% antibacterial rate) in the solution. Finally, this study developed a novel strategy by using the ternary DES as the precursor and medium for the synthesis of lanthanum-based adsorbent with antibacterial activity for advanced phosphate adsorption.

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