Zn2GeO4 crystal splitting toward sheaf-like, hyperbranched nanostructures and photocatalytic reduction of CO2 into CH4 under visible light after nitridation

Zn2GeO4 crystal splitting toward sheaf-like, hyperbranched nanostructures and photocatalytic reduction of CO2 into CH4 under visible light after nitridation
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氮化后 Zn2GeO4 晶体分裂成束状超支化纳米结构以及可见光下 CO2 光催化还原为 CH4

DOI:
10.1039/c1jm14122h
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发表时间:
2012-01-01
影响因子:
--
通讯作者:
Zou, Zhigang
Zou, Zhigang
中科院分区:
其他
文献类型:
--
作者:
Liu, Qi;Zhou, Yong;Zou, Zhigang

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使用溶剂热路线在二元乙二胺(En)/水溶剂系统中成功合成了束状超支化 Zn2GeO4 纳米结构。这些结构可能归因于分裂晶体生长机制,类似于自然界中观察到的一些矿物。发现添加越来越多的 En 可以提高晶体分裂的程度。所得 Zn2GeO4 上层结构在 NH3 流下氮化,产生黄色 Zn1.7GeN1.8O 固溶体,在可见光照射下,在环境条件下,在 H2O 存在的情况下,可以将 CO2 光催化转化为碳氢化合物燃料 (CH4)。
Sheaf-like, hyperbranched Zn2GeO4 nanoarchitectures were successfully synthesized in a binary ethylenediamine (En)/water solvent system using a solvothermal route. These structures may be assigned to the splitting crystal growth mechanism, resembling some minerals observed in nature. Addition of increasing amounts of En was found to enhance the degree of crystal splitting. Nitridation of the resulting Zn2GeO4 superstructures under NH3 flow produced yellow Zn1.7GeN1.8O solid solution, which allows photocatalytically converse CO2 into hydrocarbon fuel (CH4) in the presence of H2O at ambient conditions under visible light irradiation.