Han W, Wu T, Zhu S. Effect of Reduced Grapheme Oxide in Enhancing the Photocatalytic Activity of β-NaYF4:Ho3+@TiO2. tjg [Internet]. 2018Aug.18 [cited 2026Oct.18];7(8). Available from: https://journals.edupub.org/index.php/tjg/article/view/8244