Zhang Qiyue, Qileng Aori, Li Jiale, Cao Yiran, Liu Weipeng, Liu Yingju
Key Laboratory for Biobased Materials and Energy of Ministry of Education, College of Materials and Energy, South China Agricultural University, Guangzhou510642, China.
Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou510642, China.
ACS Omega. 2023 Jan 25;8(5):4639-4648. doi: 10.1021/acsomega.2c06300. eCollection 2023 Feb 7.
Organic dyes can produce harmful effects on the water environment, such as affecting the growth of aquatic organisms, reducing the transparency of water bodies, and causing eutrophication of water bodies, so it is necessary to mitigate the hazards of organic dyes. In this study, a metal-organic framework [NH-MIL-101(Fe)] was synthesized by the solvothermal method as a carrier for the in situ uniform deposition of AgCl nanoparticles on its surface, which was successfully used for both adsorption and degradation of Congo red. Adsorption results showed that the adsorption kinetics conformed to the proposed secondary adsorption kinetics equation with a maximum adsorption capacity of 248.4 mg·g. Furthermore, the degradation results indicated that with the aid of sodium borohydride as a reducing agent, the degradation of Congo red followed pseudo-first-order kinetics with a degradation rate of 0.077 min, and the complete degradation of Congo red was finished within 18 min. Therefore, AgCl/NH-MIL-101(Fe) may find a potential application in the removal of dyes from wastewater.
有机染料会对水环境产生有害影响，如影响水生生物的生长、降低水体透明度以及导致水体富营养化，因此有必要减轻有机染料的危害。在本研究中，通过溶剂热法合成了一种金属有机框架[NH-MIL-101(Fe)]，作为在其表面原位均匀沉积AgCl纳米颗粒的载体，该载体成功用于刚果红的吸附和降解。吸附结果表明，吸附动力学符合所提出的二级吸附动力学方程，最大吸附容量为248.4 mg·g。此外，降解结果表明，在硼氢化钠作为还原剂的辅助下，刚果红的降解遵循准一级动力学，降解速率为0.077 min，刚果红在18分钟内完全降解。因此，AgCl/NH-MIL-101(Fe)在从废水中去除染料方面可能具有潜在应用。
