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采用微波水热法快速合成Zn_2GeO_4纳米带,研究反应温度、模板剂、原料用量等因素对晶体生长的影响,并优化其合成条件.用场发射扫描电镜(FE-SEM)、X射线衍射(XRD)光谱和紫外-可见漫反射吸收光谱(UVVis RDS)等手段分析产物的形貌、结构和组成,考察合成的Zn_2GeO_4在甲基橙光催化降解反应中的性能.研究结果表明:微波水热条件下,以摩尔比为2:1的乙酸锌和氧化锗为原料,在160°C反应20 min可合成分散均匀的Zn_2GeO_4纳米带,宽约100 nm,长为几十微米.与常规水热法相比,微波水热法合成的Zn_2GeO_4纳米带的本征缺陷减少,光致发光(PL)光谱降低,比表面积增大50.7%,光催化活性提高54.7%.
The Zn 2 GeO 4 nanoribbons were synthesized by microwave hydrothermal method and the effects of reaction temperature, template agent, raw material dosage and other factors on the crystal growth were studied, and their synthesis conditions were optimized. The structure of Zn 2 GeO 4 nanoribbons was characterized by field emission scanning electron microscopy (SEM), X-ray diffraction The morphology, structure and composition of the product were investigated by spectrophotometry, UV-Vis absorption spectroscopy (UVVIS RDS) and other methods to investigate the photocatalytic performance of the synthesized Zn_2GeO_4 in methyl orange photocatalytic degradation. The results show that under microwave hydrothermal conditions Zn 2 GeO 4 nanobelts with a width of 100 nm and a length of tens of micrometers were synthesized by reacting zinc acetate and germanium oxide with molar ratio of 2: 1 at 160 ° C for 20 min. Compared with the conventional hydrothermal method The intrinsic defects of Zn 2 GeO 4 nanobelts synthesized by microwave hydrothermal method decreased and the PL spectra decreased. The specific surface area increased by 50.7% and the photocatalytic activity increased by 54.7%.