| RESEARCH PAPER |
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Synthesis of Biomorphic ZnO Derived from Cornhusk and
Adsorption Property for Pb2+ |
| HU Xiaohui, LI Qiurong, GAO Lele, WANG Xinpei, SONG Heru, YAN Li
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| School of Environment and Chemical Engineering, Yanshan University, Qinhuangdao 066004 |
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Abstract Biomorphic porous ZnO was synthesized by using bio-template method with cornhusk as template. The treated cornhusk was soaked in zinc acetate precursor solution for 24 h and dried, then the soaked cornhusk was calcined at 800 ℃ for 3 h to obtain biomorphic ZnO. Different characterization techniques such as XRD, SEM and TEM were used to investigate the structure of as-prepared samples. The adsorption properties of as-synthesized ZnO for lead ions were also studied. Through an in-situ route, biomorphic porous ZnO with a class roll of leaf structure was synthesized by self-assembly of well-crystallized ZnO grain on cornhusk. Moreover, the as-synthesized biomorphic ZnO exhibited good adsorption property for lead ions, the adsorption capacity of biomorphic ZnO was 49.9 mg/g. The adsorption process can achieve equilibrium in 120 min and the adsorption process can be described with pseudo-second-order model. The adsorption isotherm model accords with the Langmuir isothermal model, the increase of temperature can also improve the adsorption performance of biomorphic ZnO.
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Published: 25 February 2017
Online: 2018-05-02
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1 Wang Ranran. Prepartion of NiO and NiO/Al2O3 using natural pla-nts as templates and their adsorption properties[D]. Qinhuang-dao: Yanshan University,2014(in Chinese).
王然然. 以天然植物为模板的NiO和NiO/Al2O3制备及其吸附性能研究[D]. 秦皇岛:燕山大学,2014.
2 Zhu Z H, Yang D, Liu H, et al. Research developments of biotemplate technology on preparation of porous ceramics[J]. Mater Rev:Rev,2009,23(11):50(in Chinese).
朱振峰, 杨冬, 刘辉, 等. 生物模板法制备多孔陶瓷的研究进展[J]. 材料导报:综述篇,2009,23(11):50.
3 Yang Y L, Wen Y Q, Li Y, et al. In-situ synthesis of lead sulfide nano-materials on eggshell membrane and pilot study of its formation mechanism[J]. Chem Res Appl,2011,23(7):907(in Chinese).
杨引玲, 温雅琼, 李毅, 等. 蛋壳膜原位生长PbS纳米颗粒及其机理初探[J]. 化学研究与应用,2011,23(7):907.
4 Zhao X B, Wang F, Qian J C. Preparation of hierarchical mesoporous TiO2 nanosheet using China rose petal as template[J]. Chem J Chinese Universities,2012,33(3):442(in Chinese).
赵晓兵, 王芳, 钱君超. 以花瓣为模板制备TiO2分层介孔纳米片[J]. 高等学校化学学报,2012,33(3):442.
5 Zhang B, Ren T R, Wu Q H, et al. Preparation of hollow silica microspheres with synechocystis sp. PCC 6803 as bio-template[J].Chinese J Process Eng,2011,11(1):107(in Chinese).
张博, 任天瑞, 吴青海, 等. 以集胞藻6803为生物模板制备二氧化硅中空微球[J].过程工程学报,2011,11(1):107.
6 Li Y N, Su J, et al. Yeast bio-template synthesis of porous anatase TiO2 and potential application as an anode for sodium-ion batteries [J]. Electrochim Acta,2015,182:596.
7 Jiang J, Zhou H, Ding J, et al. Constructing inverse V-type TiO2-based photocatalyst via bio-template approach to enhance the photosynthetic water oxidation[J]. Appl Surf Sci,2015,347:368.
8 Wang M, Liu J N, He X H, et al. Preparation of porous alumina ceramics by morph-genetic process[J]. J Xi’an Polytechnic University,2014,125(28):45(in Chinese).
王蒙, 刘江南,贺辛亥,等. 苎麻织物制备多孔氧化铝遗态陶瓷[J]. 西安工程大学学报,2014,125(28):45.
9 Sun F S, Li J, Zhang Z J, et al. Synthesis of fibrous nano-tin oxide using silk cloth as templates[J]. Mater Rev: Res,2011,25(1):74(in Chinese).
孙富升, 李嘉, 张宗见,等. 以丝绸为模板合成纤维状氧化锡纳米晶材料[J]. 材料导报:研究篇,2011,25(1):74.
10 Wang T C, Chang L J, et al. Preparation and hydrophobicity of biomorphic ZnO/carbon based on a lotus-leaf template [J]. Mater Sci Eng C,2014,43:310.
11 Yan S H, Ma S Y, et al. Synthesis and gas sensing application of porous CeO2-ZnO hollow fibers using cotton as biotemplates[J]. Mater Lett,2016,165:9.
12 Ghasemi M, Naushad M, et al. Adsorption of Pb(Ⅱ) from aqueous solution using new adsorbents prepared from agricultural waste: Adsorption isotherm and kinetic studies[J]. J Ind Eng Chem,2014,20(4):2193. |
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2017, Vol. 31 
