Strong adsorption of tetracycline on octahedral Cu2O nanocrystals exposed with {111} facets: Adsorption behavior and mechanism insight

Wang, Pu1; Tian, Yu1; Wang, Huijing1; Zhang, Jun1; Kong, Lingchao2; Zuo, Wei1; Li, Daikun1; Yin, Linlin1

2021-03-15

10.1016/j.apsusc.2020.148545

APPLIED SURFACE SCIENCE   影响因子和分区

0169-4332

1873-5584

The extensive use of tetracycline (TC) as veterinary therapeutics and animal growth promoters has caused human health problems. Some adsorbents have been developed to remove TC, but the adsorption capacity is still unsatisfactory. Here, we synthesized octahedral cuprous oxide nanocrystals (oct-Cu2O NCs) by a hydrothermal method at room temperature. Surprisingly, the maximum adsorption capacity of oct-Cu2O NCs reached an astonishing amount of 1112.6 mg/g. Adsorption kinetics and isotherm experiments for TC removal were carried out to evaluate its potential as an adsorbent. The key factors like pH and solution ions as well as the mechanism of TC adsorption on oct-Cu2O NCs were also studied. The main adsorption process may be that the hydroxyl group (-OH) on the {111} facets surface of oct-Cu2O NCs is replaced by the amino group (-NH2) of TC. The high adsorption capacity is generated by the abundant Cu atoms with dangling bonds on the {111} facets surface and the strong chemical coordination between the -NH2 of TC and Cu(I). This work provides an alternative with a promising application prospect for the treatment of TC in water.

Cu2O Tetracycline Nanocrystal Adsorption Coordination

SCI ; EI

英语

其他

National Key Research and Development Program of China[2019YFD1100300] ; National Natural Science Foundation of China[41877396,51708157] ; Shenzhen Key Technology R&D Program of China[JSGG20180507183210868] ; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology["ES201905","2020TS02"]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter

WOS:000608530400004

ELSEVIER

20205209671302

Dangling bonds ; Water treatment ; Copper oxides ; Nanocrystals

Water Treatment Techniques:445.1 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Chemical Operations:802.3 ; Inorganic Compounds:804.2 ; Atomic and Molecular Physics:931.3 ; Crystalline Solids:933.1

MATERIALS SCIENCE

Web of Science

1.Harbin Inst Technol, Sch Environm, State Key Lab Urban Water Resource & Environm SKL, Harbin 150090, Peoples R China
2.Southern Univ Sci & Technol, State Environm Protect Key Lab Integrated Surface, Sch Environm Sci & Engn, Shenzhen, Peoples R China

Wang, Pu,Tian, Yu,Wang, Huijing,et al. Strong adsorption of tetracycline on octahedral Cu2O nanocrystals exposed with {111} facets: Adsorption behavior and mechanism insight[J]. APPLIED SURFACE SCIENCE,2021,542.

Wang, Pu.,Tian, Yu.,Wang, Huijing.,Zhang, Jun.,Kong, Lingchao.,...&Yin, Linlin.(2021).Strong adsorption of tetracycline on octahedral Cu2O nanocrystals exposed with {111} facets: Adsorption behavior and mechanism insight.APPLIED SURFACE SCIENCE,542.

Wang, Pu,et al."Strong adsorption of tetracycline on octahedral Cu2O nanocrystals exposed with {111} facets: Adsorption behavior and mechanism insight".APPLIED SURFACE SCIENCE 542(2021).