Enhanced adsorption performance for antibiotics by alcohol-solvent mediated boron nitride nanosheets  

作　　者：Hao-Feng Wu Yan-Hong Chao Guo-Hua Xia Jing Luo Duan-Jian Tao Lin-Hua Zhu Gui-Ling Luo Yan Huang Ming-Qing Hua Wen-Shuai Zhu 

机构地区：[1]School of Pharmacy,Jiangsu University,Zhenjiang 212013,China [2]School of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang 212013,China [3]College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang 330022,China [4]Key Laboratory of Water Pollution Treatment and Resource Reuse of Hainan Province,College of Chemistry and Chemical Engineering,Hainan Normal University,Haikou 571158,China [5]School of Environment and Safety Engineering,Jiangsu University,Zhenjiang 212013,China

出　　处：《Rare Metals》2022年第1期342-352,共11页稀有金属（英文版）

基　　金：This work was financially supported by Hainan Natural Science Foundation Innovation Research Team project(No.220CXTD436);the National Natural Science Foundation of China(No.21766007,21878133).

摘　　要：The development of high-efficient adsorbents for the treatment of antibiotics from contaminated water has been of great concern.This work introduced an alcohol-solvent mediated strategy to increase the specific surface area(SSA)and porosity of hexagonal boron nitride nanosheets(BNNSs)for improving tetracycline(TC)removal efficiency.The BNNSs synthesized with the mediation of n-propanol solvent(BN-P)exhibited the largest pore volume and relatively high SSA(increased by 34%and 64%,respectively,compared with that synthesized under the mediation of water)in its structure,which in turn facilitated the mass transfer of TC molecules onto BN-P framework.The remarkable adsorption performance of BN-P,with 20%increase in equilibrium adsorption capacity and Langmuir maximum adsorption capacity of 556 mg·g^(-1),was achieved for capturing TC within just 3 h,which is mainly through p-p interaction and electrostatic force.Pseudo-second kinetics equation can well illustrate the adsorption process,while Freundlich and Langmuir isotherm models fitted the equilibrium data well.Thermodynamics study demonstrated a spontaneous exothermal adsorption process.Furthermore,the strong environmental suitability and notable recycling performance of BN-P revealed its good application prospect in removing antibiotic TC from wastewater.

关 键 词：Water treatment Boron nitride nanosheets Adsorption ANTIBIOTICS Solvent mediation 

分 类 号：X703[环境科学与工程—环境工程] TQ424[化学工程]