Carboxyl-functionalized TiO2 as a highly efficient adsorbent for separation, enrichment, and immobilization of Cu(II), Pb(II), and Hg(II) - Shu Wang; Deyue Meng; Yufei Ma; Changjiang Li; Weilong Chen; Yuchuan Zheng; Le Pan; Bowen Li; Weixin Huang (Chemical Engineering Journal, 2025)