CAJ | 학술논문

采用高温固相法和离子交换法制备了掺镍铌酸盐（Ni/KLaNb2O7）光催化剂。采用X-射线衍射、扫描电子显微镜和紫外可见漫反射等方法进行表征。研究了在紫外光照射下,甲醇为电子给体,Ni/KLaNb2O7裂解水的光催化活性,探讨了Ni2＋对KLaNb2O7光催化活性的影响。研究结果表明,Ni2＋的掺杂明显提高了KLaNb2O7裂解水的光催化活性。当Ni与Nb的摩尔比为0.3∶4时,产氢速率高达到1.62 mmol/（g.h）。
채용고온고상법화리자교환법제비료참얼니산염（Ni/KLaNb2O7）광최화제。채용X-사선연사、소묘전자현미경화자외가견만반사등방법진행표정。연구료재자외광조사하,갑순위전자급체,Ni/KLaNb2O7렬해수적광최화활성,탐토료Ni2＋대KLaNb2O7광최화활성적영향。연구결과표명,Ni2＋적참잡명현제고료KLaNb2O7렬해수적광최화활성。당Ni여Nb적마이비위0.3∶4시,산경속솔고체도1.62 mmol/（g.h）。
A series of niobate KLaNb2O7 doping with Ni2＋ ion were synthesized by high temperature solid and ion-exchange methods.The samples were characterized by X-ray diffraction（XRD）,UV-vis diffuse reflectance spectra（DRS）,scan electron microscope（SEM） and energy dispersive spectrometer（EDS）.The photocatalytic activity was evaluated with the amount of hydrogen by splitting methanol solution under wavelength 290 nm light radiation,and discussed based on the influence of nickel on the photocatalytic activity of KLaNb2O7.It was found that the composite Ni-doped KLaNb2O7 showed a higher H2 evolution rate in comparison with individual materials.The highest rate of hydrogen evolution was 1.62 mmol/（g？h） while the doping value of Ni was 0.3： 4（Ni： Nb）.