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Biomimetic synthesis of urchin-like CuO/ZnO nanocomposites with excellent photocatalytic activity†
New Journal of Chemistry ( IF 3.3 ) Pub Date : 2018-06-21 00:00:00 , DOI: 10.1039/c8nj02052c
Hui Fang 1, 2, 3, 4 , Yanxia Guo 1, 2, 3, 4 , Tong Wu 1, 2, 3, 4 , Yuping Liu 1, 2, 3, 4
Affiliation  

Novel urchin-like CuO/ZnO nanocomposites were synthesized using glutamine (Gln) as a growth regulator by a biomimetic hydrothermal process with subsequent calcination. The urchin-like hierarchical structure is assembled by closely packed and inter-connected nanoparticles with sizes of 20–50 nm. Gln plays key roles in phase composition and morphology due to its competitive coordination with Cu ions and Zn ions. Compared with the prepared ZnO/CuO nanosheets without Gln and pure ZnO with Gln, the urchin-like CuO/ZnO nanocomposites exhibited the most remarkable performance for the degradation of methylene blue dye under UV irradiation. On the basis of the photocatalytic mechanism of urchin-like CuO/ZnO nanocomposites, a direct relationship among the morphology, phase composition and photocatalytic properties is established.

中文翻译:

仿生的具有优异光催化活性的海胆状CuO / ZnO纳米复合材料

以谷氨酰胺(Gln)为生长调节剂,通过仿生水热法并随后煅烧,合成了新型的顽童状CuO / ZnO纳米复合材料。像海胆一样的分层结构是由紧密堆积和相互连接的大小为20–50 nm的纳米粒子组装而成的。由于Gln与Cu离子和Zn离子具有竞争性配位关系,因此在相组成和形态方面起着关键作用。与所制备的不含Gln的ZnO / CuO纳米片和含Gln的纯ZnO相比,在紫外光照射下,类似海胆的CuO / ZnO纳米复合材料表现出最显着的亚甲基蓝染料降解性能。基于海胆状CuO / ZnO纳米复合材料的光催化机理,建立了形貌,相组成和光催化性能之间的直接关系。
更新日期:2018-06-21
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