为模拟自然界光催化过程,本文提出以荷电的聚砜膜为载体,采用静电组装法将卟啉负载到膜表面,在可见光照射下降解染料废水,光催化与膜分离耦合实现染料废水的同步降解与分离。本文首先采用均相法依次经氯甲基化和季铵化制备了季铵化聚砜(QAPSF),并采用非溶剂相转化法制备了季铵化聚砜膜,调控膜结构,获得了断面为海绵状孔结构的季铵化聚砜膜。
传统的Fenton试剂法在水处理的应用中存在缺点:pH的范围偏酸(2-3),二价铁和三价铁转化速率慢等。研究发现,在Fenton体系中添加有机配体不仅能够拓宽反应体系pH的使用范围,而且还可以加速不同价态铁的相互转换。例如:Fe-NTA,Fe-citrate和Fe-L-cysteine等。但是,大多数羧酸类配体的使用条件pH<7,同时反应体系需要额外能量的激发。
利用自然界当中储量丰富的叶绿素及其衍生物作为光活性材料制备新型太阳能电池,既可以实现廉价可再生自然资源的有效利用,又可以通过模仿天然体系的光能转化过程来实现潜在的高光电转换效率。近年来本课题组应用一系列叶绿素及其衍生物作为光活性材料进行了一系列探索并取得了一定成果。
A wide variety of value-added chemicals could be obtained from the oxidation of glucose,these value-added chemicals are widely used in the fields of food additive,pharmaceutical and fine chemicals.[1,
Photocatalytic selective transformation of glucose into value-added chemicals in aqueous solution has attracted much attention,for this process could be carried out under milder reaction conditions.[1
The isothermal dissolution equilibrium method and the Schreinemakers method were used to study the two ternary systems(KCl+KB5O8+H2O)and(K2SO4+KB5O8+H2O)at 298.15 K and 101.325 kPa,and the solubilitie
Densities of sodium arsenate(Na3AsO4)aqueous solution with the molality varied from(0.04165 to 0.37306)mol·kg-1 at temperature intervals of 5 K from(283.15 to 363.15)K and 101.325 kPa were measured by
塑性晶体,是一类在固态晶格中质心保持固定位置,而分子或离子呈现转动无序的晶体。有机离子塑晶加入Li+,H+,Na+后,有高离子传导率,全固态电池中可取代现有液体电解质,因极低挥发性、难燃性、结构可调节,是很有潜力、新型固态电解质[1]。在介电材料、铁电材料领域,塑晶也有重要应用前景。