文献：
海藻酸钠固定化Bi_(2)WO_(6)的制备及光催化降解土壤中染料罗丹明B研究
文献链接：
https://xueshu.baidu.com/usercenter/paper/show?paperid=197h0r30uf0a0m207s2k0tu0ja093104
作者：
Lorenzo Donato CamporaC. MetzgerS. Dähnhardt-PfeifferR. DrexelF. MeierS. Fürtauer
相关产品：
罗丹明B-海藻酸钠 RB-Alginate
原文摘要：
Bismuth tungstate (Bi_ (2) WO_ (6)) was prepared by one-step solvothermal method, and was immobilized with sodium alginate (SA) to prepare gel microspheres. By simulating the dye Rhodamine B (RhB) that pollutes soil and using sunlight as energy source, the effects of sodium alginate concentration, crosslinking agent concentration, catalyst dosage, and crosslinking time on the photocatalytic performance of Bi_ (2) WO_ (6) were studied through orthogonal experiments. XRD, SEM, EDS, FT-IR, TG were used to characterize the structure, morphology, functional groups, and thermal stability of sodium alginate immobilized Bi_ (2) WO_ (6) photocatalyst, and its photocatalytic performance on RhB solution was measured. The results showed that the optimal conditions for preparing Bi_ (2) WO_ (6) immobilized particles were: sodium alginate concentration of 1.5%, crosslinking agent concentration of 1%, crosslinking time of 2 hours, and Bi_ (2) WO_ (6) 0.6g. Under visible light irradiation for 90 minutes, the degradation rate of RhB can reach 96.81%, and it still maintains high activity in four repeated experiments. This fixed photocatalyst effectively solves the problems of difficult recovery of powder materials and secondary pollution.

图为：罗丹明B-海藻酸钠 RB-Alginate结构式

采用一步溶剂热法制备出钨酸铋(Bi_(2)WO_(6)),并用海藻酸钠(SA)固定化制成凝胶微球。通过模拟污染土壤的染料罗丹明B(RhB),以太阳光作为能源,通过正交试验,研究海藻酸钠浓度、交联剂浓度、催化剂用量和交联时间对Bi_(2)WO_(6)光催化性能的影响,采用XRD、SEM、EDS、FT-IR、TG来表征海藻酸钠固定化Bi_(2)WO_(6)光催化剂的结构、形貌、官能团和热稳定性,并测定了其对RhB溶液的光催化性能。

结果表明,Bi_(2)WO_(6)固定化颗粒制备的*佳条件为:海藻酸钠浓度1.5%,交联剂浓度1%,交联时间2 h,Bi_(2)WO_(6)0.6 g。在可见光照时间90 min条件下,RhB的降解率可达到96.81%,且在4次重复试验中仍保持高度活性。此种固定化光催化剂有效地解决了粉体材料难回收、二次污染等问题。