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为提高纳米ZnO的光催化性,以Zn(CH3COO)2·2H2O、Tm(NO3)3为原料,丙烯酰胺为单体,N,N’-亚甲基双丙烯酰胺为网络剂,采用高分子网络凝胶法制备Tm3+掺杂纳米ZnO粉体。XRD物相分析表明:Tm3+掺杂纳米ZnO样品的物相均为六方晶系纤锌矿结构。TEM形貌观察表明:粒子基本为球形,平均粒径约为50nm。水溶液中亚甲基蓝染料在Tm3+掺杂纳米ZnO半导体光催化条件下、pH=9时,仅2h降解率就达到84.87%,比纯ZnO降解率高29.97%。
In order to improve the photocatalytic activity of nano-ZnO, using Zn (CH3COO) 2 · 2H2O and Tm (NO3) 3 as raw materials, acrylamide as monomer and N, N’-methylenebisacrylamide as network agent, Preparation of Tm3 + - doped ZnO Nanoparticles by Network Gel Method. XRD phase analysis showed that the phases of Tm3 + -doped ZnO samples were hexagonal wurtzite structure. TEM observation showed that the particles were basically spherical and the average particle size was about 50 nm. Under the condition of pH = 9, the degradation rate of methylene blue dye in aqueous solution reached 84.87% in 2h and 29.97% higher than pure ZnO under the photocatalytic condition of Tm3 + doped nano-ZnO semiconductor.