Research on Photo Catalytic Performance of TiO2 Film Doped with Li+ Jing Zhang, Zhengxing Huang, Liming Zheng, Xiaobo Tian, Wengang Yin and Shihua Ding MATEC Web Conf., 358 (2022) 01047 Published online: 19 May 2022 DOI: 10.1051/matecconf/202235801047