Bifunctional Ag/C3N4.5 composite nanobelts for photocatalysis and antibacterium
Bifunctional Ag/C3N4.5 composite nanobelts for photocatalysis and antibacterium
复制标题
光催化抗菌双功能Ag/C3N4.5复合纳米带
DOI：
10.1088/0957-4484/27/39/395603
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发表时间：
2016-09-30
期刊：
影响因子：
3.5
通讯作者：
Wu, Rong
中科院分区：
文献类型：
--
作者：
Lei, Renbo;Jian, Jikang;Wu, Rong
氮化碳基复合纳米材料可以通过调整其组成和结构来实现多种功能。本文报道了一种具有高效光催化和抗菌活性的新型双功能Ag/C3N4.5复合纳米带（CNBs）的大规模合成。采用均相沉淀和煅烧两步法制备了Ag/C3N4.5 CNBs。结构、形态、组成和光谱表征表明，Ag/C3N4.5 CNBs由缺氮超薄纳米带和晶体银纳米颗粒组成，纳米带表面具有良好的接触。Ag/C3N4.5 CNBs的带隙约为3.04 eV。通过对罗丹明B （Rhodamine B, RhB）的降解和对大肠杆菌的抑制区测试，验证了复合纳米材料的高效光催化和抗菌活性。这项工作为双功能氮化碳基复合材料在环境和生物领域的潜在应用提供了一条便捷的途径。
Multiple functions can be achieved in carbon nitride-based composite nanomaterials by tuning their components and structures. Here, we report on a large-scale synthesis of novel bifunctional Ag/C3N4.5 composite nanobelts (CNBs) with efficient photocatalytic and antibacterial activity. The Ag/C3N4.5 CNBs were synthesized in high yield by a two-step route including a homogeneous precipitation process and a subsequent calcination treatment. The structural, morphological, compositional, and spectroscopic characterizations revealed that the Ag/C3N4.5 CNBs are composed of N-deficient melem ultrathin nanobelts and crystalline Ag nanoparticles attached to the surface of the nanobelts with good contact. The band gap of the Ag/C3N4.5 CNBs is determined to be about 3.04 eV. The efficient photocatalytic and antibacterial activities of the composite nanomaterials are verified by testing the degradation of Rhodamine B (RhB) and the inhibition zone to bacterium E. coli. The work provides a facile route to bifunctional carbon nitride-based composites with potential applications in the fields of the environment and biology.