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应用原子力显微镜和X射线粉末法对 3d过渡金属离子Cr(Ⅲ ) ,Fe(Ⅲ ) ,Mn(Ⅱ ) ,Co(Ⅱ ) ,Ni(Ⅱ ) ,Cu(Ⅱ )和Zn(Ⅱ )掺杂TiO2 纳米晶粒 (简写为M3d TiO2 )作了表征 ,并用光电化学方法研究了M3d TiO2 纳米结构多孔膜电极 .实验结果表明 ,M3d TiO2 纳米粒子的颗粒较均匀 ,粒径约为 1 5nm ,其晶型为锐钛矿和板钛矿的混晶 .在所研究的M3d TiO2 中 ,只有Zn2 + TiO2 电极的光电流大于未掺杂的TiO2 纳米结构多孔膜电极 .3d金属离子的掺杂引起各电极的光电流信号在一定波长范围内出现 p n转型现象
Atomic force microscopy and X-ray powder analysis were used to study the effects of three transition metal ions Cr (Ⅲ), Fe (Ⅲ), Mn (Ⅱ), Co (Ⅱ), Ni (Ⅱ), Cu (Ⅱ) and Zn (Ⅱ) The nanocrystal M3d TiO2 was characterized and the photoelectrochemical method was used to study the M3d TiO2 nanostructured porous membrane electrode.The experimental results show that the M3d TiO2 nanoparticle has a uniform particle size of about 15nm, Is the mixed crystal of anatase and brookite.In the studied M3d TiO2, only the photocurrent of Zn2 + TiO2 electrode is larger than that of undoped TiO2 nanostructured porous membrane electrode.The doping of 3d metal ions caused the Photoelectric current signal in a certain wavelength range pn transition phenomenon