Hierarchical porous induced competent removal of low concentration azo dye molecules by generating a leachy crystalline structure H-MIL-53(Fe)  

作　　者：Tao Feng Jean Pierre Bavumiragira Mumbi Anne Wambui Daniel Manaye Kabtamu Krisztina László Ying Wang Fengting Li 

机构地区：[1]State Key Laboratory of Pollution Control and Resources Reuse,College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China [2]Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China [3]Department of Physical Chemistry and Materials Science,Budapest University of Technology and Economics,H-1521 Budapest,Hungary

出　　处：《Chinese Chemical Letters》2020年第10期2717-2720,共4页中国化学快报（英文版）

基　　金：the National Natural Science Foundation of China(Nos.21876132,21577100);the National Program for Support of Top-Notch Young Professionals,Shanghai Rising-Star Program(No.18QA1404300);the Fundamental Research Funds for the Central Universities(Nos.22120180102,22120200146);Young Excellent Talents in Tongji University(No.2015KJ001);Science&Technology Commission of Shanghai Municipality(No.18DZ1204400)。

摘　　要：The development in technology of synthetic azo dyes,has led to excessive water resources pollution.Eve n at lower concentration they can impart the quality of water and human life.Herein,we have developed a novel synthesis strategy via introducing salicylic acid(SA)for the synthesis of a leachy crystalline material H-MIL-53(Fe)with hierarchical pores(HP)and exposed coordination unsaturated sites(CUS),which had higher surface area and larger pore volume than the as synthesized MIL-53(Fe).Due to these characteristics,H-MIL-53(Fe)was competent removal of orange G(OG,one of the frequently used azo dyes)with equilibrium in 300 min and the maximum adsorption capacity of 163.9 mg/g.The adsorption mechanism of OG onto H-MIL-53(Fe)was mostly based on electrostatic attraction between CUS of HMIL-53(Fe)along with HP as active species to OG diffusion and bind.By comparing H-MIL-53(Fe)with other adsorbents for OG adsorption,it is undoubtedly that H-MIL-53(Fe)can be used as a promising adsorbent for OG removal from aqueous solutions.

关 键 词：H-MIL-53(Fe) Salicylic acid Leachy crystalline Adsorption Orange G removal 

分 类 号：TQ424[化学工程] X703[环境科学与工程—环境工程]