Adsorption behavior of methyl orange onto nanoporous core–shell Cu@Cu2O nanocomposite
作者： Tianyi Kou , Yingzi Wang , Chi Zhang , Junzhe Sun , Zhonghua Zhang
DOI: 10.1016/J.CEJ.2013.03.013
关键词:
摘要: Abstract In this work, the adsorption behavior of methyl orange onto nanoporous core–shell Cu@Cu2O nanocomposite has been investigated using an UV–vis spectrophotometer, considering influence pH value, temperature, additive amount and initial (MO) concentration. The kinetics MO on discussed based upon pseudo-first-order model, intraparticle diffusion model Langmuir model. Thermodynamic parameters such as change in Gibbs free energy (ΔG), enthalpy (ΔH) entropy (ΔS) have also evaluated. negative changes (−18.4 to −15.1 kJ mol−1) (−51.5 kJ mol−1) indicate spontaneous exothermic nature process MO. activation (Ea) 12.4 kJ mol−1 reveals physisorption nanocomposite.
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sci-hub.se 参考文章(51)
Alain Karma, Nikolay Dimitrov, Karl Sieradzki, Jonah Erlebacher, Michael J. Aziz, Evolution of nanoporosity in dealloying Nature. ,vol. 410, pp. 450- 453 ,(2001) , 10.1038/35068529
S. C. Rastogi, V. J. Barwick, S. V. Carter, Identification of organic colourants in cosmetics by HPLC-diode array detection Chromatographia. ,vol. 45, pp. 215- 228 ,(1997) , 10.1007/BF02505563
Samira Salehi, Mansoor Anbia, Removal of acid dyes from aqueous media by adsorption onto amino-functionalized nanoporous silica SBA-3 Dyes and Pigments. ,vol. 94, pp. 1- 9 ,(2012) , 10.1016/J.DYEPIG.2011.10.016
L. Semerjian, G.M. Ayoub, High-pH–magnesium coagulation–flocculation in wastewater treatment Advances in Environmental Research. ,vol. 7, pp. 389- 403 ,(2003) , 10.1016/S1093-0191(02)00009-6
Lei Huang, Feng Peng, Hao Yu, Hongjuan Wang, Synthesis of Cu2O nanoboxes, nanocubes and nanospheres by polyol process and their adsorption characteristic Materials Research Bulletin. ,vol. 43, pp. 3047- 3053 ,(2008) , 10.1016/J.MATERRESBULL.2007.11.011
Xiaoguang Wang, Junzhe Sun, Chi Zhang, Tianyi Kou, Zhonghua Zhang, On the Microstructure, Chemical Composition, and Porosity Evolution of Nanoporous Alloy through Successive Dealloying of Ternary Al–Pd–Au Precursor Journal of Physical Chemistry C. ,vol. 116, pp. 13271- 13280 ,(2012) , 10.1021/JP3035677
Ivan Grozdanov, Electroless chemical deposition technique for Cu2O thin films Materials Letters. ,vol. 19, pp. 281- 285 ,(1994) , 10.1016/0167-577X(94)90171-6
G. Lefèvre, A. Walcarius, J.-J. Ehrhardt, J. Bessière, Sorption of Iodide on Cuprite (Cu2O) Langmuir. ,vol. 16, pp. 4519- 4527 ,(2000) , 10.1021/LA9903999
Jing Fan, Yanhui Guo, Jianji Wang, Maohong Fan, Rapid decolorization of azo dye methyl orange in aqueous solution by nanoscale zerovalent iron particles Journal of Hazardous Materials. ,vol. 166, pp. 904- 910 ,(2009) , 10.1016/J.JHAZMAT.2008.11.091
A.O Musa, T Akomolafe, M.J Carter, Production of cuprous oxide, a solar cell material, by thermal oxidation and a study of its physical and electrical properties Solar Energy Materials and Solar Cells. ,vol. 51, pp. 305- 316 ,(1998) , 10.1016/S0927-0248(97)00233-X