Controllable preparation of ZnO porous flower through a membrane dispersion reactor and their photocatalytic properties

doi:10.1016/j.cjche.2018.06.034

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (10): 2192-2198.DOI: 10.1016/j.cjche.2018.06.034

• Materials and Product Engineering • Previous Articles Next Articles

Controllable preparation of ZnO porous flower through a membrane dispersion reactor and their photocatalytic properties

Feng Zhang¹, Zhilong Xu¹, Kun Wang², Rizhi Chen¹, Zhaoxiang Zhong¹, Weihong Xing¹

1 State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China;
2 Changzhou Lvxin Advanced Material Technology Co., Ltd., Changzhou 213200, China

Received:2018-02-12 Revised:2018-06-12 Online:2018-11-14 Published:2018-10-28
Contact: Zhaoxiang Zhong,E-mail addresses:zhongzx@njtech.edu.cn;Weihong Xing,E-mail addresses:xingwh@njtech.edu.cn
Supported by:
Supported by the National Natural Science Foundation of China (21125629, 21306079, 21276124), Innovative Research Team Program by the Ministry of Education of China (IRT13070), China Postdoctoral Science Foundation (2014M561640), Jiangsu Planned Projects for Postdoctoral Research Funds (1401082B), Jiangsu province scientific supporting project (No. BE2014717), and the Natural Science Foundation of Jiangsu Province (BK20150277).

Controllable preparation of ZnO porous flower through a membrane dispersion reactor and their photocatalytic properties

Feng Zhang¹, Zhilong Xu¹, Kun Wang², Rizhi Chen¹, Zhaoxiang Zhong¹, Weihong Xing¹

1 State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University, Nanjing 210009, China;
2 Changzhou Lvxin Advanced Material Technology Co., Ltd., Changzhou 213200, China

通讯作者: Zhaoxiang Zhong,E-mail addresses:zhongzx@njtech.edu.cn;Weihong Xing,E-mail addresses:xingwh@njtech.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (21125629, 21306079, 21276124), Innovative Research Team Program by the Ministry of Education of China (IRT13070), China Postdoctoral Science Foundation (2014M561640), Jiangsu Planned Projects for Postdoctoral Research Funds (1401082B), Jiangsu province scientific supporting project (No. BE2014717), and the Natural Science Foundation of Jiangsu Province (BK20150277).

Abstract

Abstract: Three dimensional (3D) flower-like basic zinc carbonate constructed by multilayered nanoplates were rapidly prepared at room temperature through the direct precipitation method coupled with membrane dispersion technology, and porous ZnO with similar structures could be obtained after calcining the precursor. The structural properties of the products before and after the calcining process were characterized by SEM, TEM and XRD. The supersaturation of the reaction system due to the membrane dispersion played an important role in the formation of uniform Zn₅(CO₃)₂(OH)₆ precursors. A plausible mechanism was proposed for the formation of the flower-like ZnO assembled by nanoplates composed of nanoparticles. The obtained ZnO microspheres showed excellent photocatalytic properties, which could be attributed to the open structure and remarkable amount of porous nanoplates.

Key words: Three dimensional, Porous ZnO, Flower-like, Membrane dispersion, Growth mechanism, Photocatalytic

摘要： Three dimensional (3D) flower-like basic zinc carbonate constructed by multilayered nanoplates were rapidly prepared at room temperature through the direct precipitation method coupled with membrane dispersion technology, and porous ZnO with similar structures could be obtained after calcining the precursor. The structural properties of the products before and after the calcining process were characterized by SEM, TEM and XRD. The supersaturation of the reaction system due to the membrane dispersion played an important role in the formation of uniform Zn₅(CO₃)₂(OH)₆ precursors. A plausible mechanism was proposed for the formation of the flower-like ZnO assembled by nanoplates composed of nanoparticles. The obtained ZnO microspheres showed excellent photocatalytic properties, which could be attributed to the open structure and remarkable amount of porous nanoplates.

关键词: Three dimensional, Porous ZnO, Flower-like, Membrane dispersion, Growth mechanism, Photocatalytic

Feng Zhang, Zhilong Xu, Kun Wang, Rizhi Chen, Zhaoxiang Zhong, Weihong Xing. Controllable preparation of ZnO porous flower through a membrane dispersion reactor and their photocatalytic properties[J]. Chin.J.Chem.Eng., 2018, 26(10): 2192-2198.

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Controllable preparation of ZnO porous flower through a membrane dispersion reactor and their photocatalytic properties

Controllable preparation of ZnO porous flower through a membrane dispersion reactor and their photocatalytic properties

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