2D片状CoAl_(2)O_(4)吸附剂对亚甲基蓝的吸附性能与机理  

Adsorption properties and mechanism of 2D sheet-like CoAl_(2)O_(4) adsorbent for methylene blue

作　　者：王兵兵 郑建华 WANG Bing-bing;ZHENG Jian-hua(College of Chemistry and Chemical Engineering,Qiqihar University,Heilongjiang Qiqihar 161006,China;College of Light Industry and Textile,Qiqihar University,Heilongjiang Qiqihar 161006,China)

机构地区：[1]齐齐哈尔大学化学与化学工程学院,黑龙江齐齐哈尔161006 [2]齐齐哈尔大学轻工与纺织学院,黑龙江齐齐哈尔161006

出　　处：《齐齐哈尔大学学报(自然科学版)》2025年第1期60-65,共6页Journal of Qiqihar University(Natural Science Edition)

基　　金：黑龙江省普通本科高等学校青年创新人才培养项目资助(UNPYSCT-2020071)。

摘　　要：采用一步水热法成功制备了二维片状CoAl_(2)O_(4)材料,用于吸附去除废水中的亚甲基蓝(MB)。由于独特的形貌特征,CoAl_(2)O_(4)材料对MB具有快速吸附的能力,吸附过程和吸附等温线分别符合准二级动力学方程和Langmuir方程,吸附过程为放热的化学吸附。根据Langmuir模型,CoAl_(2)O_(4)的最大MB吸附量为125.82mg/g。利用FTIR系统地探讨CoAl_(2)O_(4)材料对MB吸附机理,结果表明,吸附过程主要是通过电子供-受体和氢键作用。该研究为MB废水的深度治理提供一定的依据。The 2D sheet-like CoAl_(2)O_(4) material was successfully prepared by a one-step hydrothermal method and used for adsorption to removal of methylene blue(MB)from wastewater.Benefitting from the unique morphology,the CoAl_(2)O_(4) exhibited a rapid adsorption capacity for MB.Under optimal conditions,the maximum adsorption capacity was 125.82mg/g.The adsorption process and isotherm can be described by quasi-second-order kinetic equation and Langmuir equation,respectively.The process is exothermic chemisorption.The FTIR was used to in detail investigate the adsorption mechanism of CoAl_(2)O_(4) material on MB,showing that electrostatic adsorption and hydrogen bonding are primarily involved in the process.This study provides a basis for the deep treatment of MB wastewater.

关 键 词：CoAl_(2)O_(4) 可再生吸附剂 亚甲基蓝 机理研究 

分 类 号：O647.3[理学—物理化学]