B 掺杂生物炭增强苯磺隆甲基的吸附性能：机理与密度泛函理论计算。
Enhanced adsorption performance of bensulfuron methyl with B doping biochar: Mechanism and density functional theory calculations.
机构信息
Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Key Laboratory of Wetland Ecology and Environment, State Key Laboratory of Black Soils Conservation and Utilization, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
出版信息
Bioresour Technol. 2023 Mar;372:128657. doi: 10.1016/j.biortech.2023.128657. Epub 2023 Jan 20.
It is an urgent task to develop suitable adsorbents for the control of herbicide-bensulfuron methyl (BSM) in the paddy rice fields at cold regions. Herein, B doping biochar was synthesized via one-step method. Results showed that the adsorption capacity for BSM on 1.0BBC was significantly superior to BC at 15 °C. Besides, low temperature resistance, wide pH adaptability, stable adsorption performance and reusability test suggested that 1.0BBC have potential practical application. The mechanisms of BSM removal by 1.0BBC were mainly attributed to pore filling and π-π electron donor-acceptor (EDA) interaction. Theoretical calculations revealed that BCO could enhance the adsorption capacity by π-π EDA between BSM and adsorbent. Meanwhile, hydroponic experiment demonstrated that the toxicity to soybean after adsorption of BSM by 1.0BBC was within the safe range. This study proves that 1.0BBC is an easy-to-prepare adsorbent with promising application in BSM removal in the rice paddy fields at lower temperature.
开发适用于寒冷地区稻田中控制除草剂苯磺隆（BSM）的吸附剂是一项紧迫的任务。在此，通过一步法合成了 B 掺杂生物炭。结果表明，在 15°C 下，1.0BBC 对 BSM 的吸附容量明显优于 BC。此外，耐低温、宽 pH 适应性、稳定的吸附性能和可重复使用性测试表明，1.0BBC 具有潜在的实际应用。1.0BBC 去除 BSM 的机制主要归因于孔填充和π-π 电子给体-受体（EDA）相互作用。理论计算表明，BCO 可以通过 BSM 和吸附剂之间的π-π EDA 来增强吸附能力。同时，水培实验表明，1.0BBC 吸附 BSM 后对大豆的毒性在安全范围内。本研究证明 1.0BBC 是一种易于制备的吸附剂，有望在低温下用于稻田中 BSM 的去除。
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