高效光催化转化CO_2为CH_4的纳米Zn_2GeO_4的简易合成（英文）

Facile synthesis of nano-Zn_2GeO_4 for efficient photocatalytic conversion of CO_2 into CH_4

通过溶液相路线制备了Zn_2GeO_4纳米棒和Zn_2GeO_4纳米颗粒.通过X射线衍射(XRD)、扫描电镜(SEM)、高分辨透射电镜(HRTEM)、电感耦合等离子体原子发射光谱(ICP-AES)、紫外-可见漫反射光谱、光致发光(PL)谱和比表面积测试对所合成的样品进行了表征.纳米Zn_2GeO_4由于比通过固相反应合成的Zn_2GeO_4具有更高的比表面积,对CO_2的光还原具有更高的光催化活性.Zn_2GeO_4纳米棒由于其具有强的CO2气体吸附能力,其光还原性能比Zn_2GeO_4纳米颗粒更高.

Zn2GeO4 nanorods and nanoparticles were prepared by a solution phase route. The as-prepared products were characterized by X ray powder diffraction （XRD）, scanning electron microscopy （ SEM）, high-resolution transmission electron microscopy（HRTEM）,inductively coupled plasma atomic emission spectrometer（ICP-AES）, UV vis diffuse reflection spectroscopy, photoluminescencc （PL） spectroscopy and Brunauer-Emmett-Teller （BET） surface area measurements. Nano-Zn2GeO4 has higher photocatalytic activity in photoreduction of CO2 than Zn2 GeO4 prepared through solid state reaction due to the higher surface area. Zn2 GeO4 nanorods show higher photoreduction performance than Zn2GeO4 nanoparticles due to the strong CO2 gas adsorption.