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Influences of Graphene Nanosheets Coating on Selectively Exposed Crystal Facet ZnO
ChemistrySelect ( IF 1.9 ) Pub Date : 2018-04-25 , DOI: 10.1002/slct.201703046 Yi Zhou 1 , Dawei Zhao 1 , Luyue Yang 1 , Zhen Zhao 1 , Dandan Li 1 , Qinsheng Luo 1 , Ya Zhang 1 , Feng Cao 1
ChemistrySelect ( IF 1.9 ) Pub Date : 2018-04-25 , DOI: 10.1002/slct.201703046 Yi Zhou 1 , Dawei Zhao 1 , Luyue Yang 1 , Zhen Zhao 1 , Dandan Li 1 , Qinsheng Luo 1 , Ya Zhang 1 , Feng Cao 1
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Graphene/ZnO composite attracting increasing attention due to great photoelectrochemical performance, however, graphene nanosheets tend to be coated on the one crystal plane of ZnO is rarely investigated. Herein, we synthesized different ZnO micro‐nanoparticles with selectively exposed crystal facet through a hydrothermal process by controlled some parameters such as temperature, concentration of reagents and reaction time, and the corresponding RGO/ZnO composites were obtained. Characterization by SEM and TEM, it was first time demonstrate that graphene nanosheets were tend to be coated on the (100) and (002) crystal facets of ZnO micro‐nanoparticles. We further discover that the largest exposed crystal facet of RGO/ZnO became (101) crystal plane. Regarding their performance in photocatalytic RhB degradation, exposed crystal facets of ZnO were found to impose crucial influence: the sample‘s photoelectrochemical properties are positively related to exposed degree of (101) facet, and it trend follows the order ZnO101 > RGO/ZnO101 > ZnO100 > RGO/ZnO100 > RGO/ZnO002 > ZnO002. Moreover, it can provide a new strategy that the films were coated on suitable crystal facet to change the photoelectrochemical properties of composite.
中文翻译：
石墨烯纳米片涂层对选择性暴露晶面ZnO的影响
石墨烯/ ZnO复合材料由于其出色的光电化学性能而引起了越来越多的关注，然而，石墨烯纳米片往往会被涂覆在ZnO的一个晶面上，对此却鲜有研究。在本文中，我们通过控制温度，试剂浓度和反应时间等参数，通过水热法合成了具有选择性暴露晶体面的不同ZnO微纳米粒子，并获得了相应的RGO / ZnO复合材料。通过SEM和TEM表征，这是首次证明石墨烯纳米片倾向于被涂覆在ZnO纳米微粒的（100）和（002）晶面上。我们进一步发现，RGO / ZnO的最大裸露晶面变为（101）晶面。关于其在光催化RhB降解中的性能，101 > RGO / ZnO 101 > ZnO 100 > RGO / ZnO 100 > RGO / ZnO 002 > ZnO 002。此外，它可以提供一种新的策略，将薄膜涂覆在合适的晶面上以改变复合材料的光电化学性能。
更新日期：2018-04-25
中文翻译：
石墨烯纳米片涂层对选择性暴露晶面ZnO的影响
石墨烯/ ZnO复合材料由于其出色的光电化学性能而引起了越来越多的关注，然而，石墨烯纳米片往往会被涂覆在ZnO的一个晶面上，对此却鲜有研究。在本文中，我们通过控制温度，试剂浓度和反应时间等参数，通过水热法合成了具有选择性暴露晶体面的不同ZnO微纳米粒子，并获得了相应的RGO / ZnO复合材料。通过SEM和TEM表征，这是首次证明石墨烯纳米片倾向于被涂覆在ZnO纳米微粒的（100）和（002）晶面上。我们进一步发现，RGO / ZnO的最大裸露晶面变为（101）晶面。关于其在光催化RhB降解中的性能，101 > RGO / ZnO 101 > ZnO 100 > RGO / ZnO 100 > RGO / ZnO 002 > ZnO 002。此外，它可以提供一种新的策略，将薄膜涂覆在合适的晶面上以改变复合材料的光电化学性能。
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