Beilstein J Nanotechnol:BN/Ag纳米材料具有较好的催化及抗菌性能

2018-02-28 MedSci MedSci原创

本研究探究了BN/Ag杂化纳米材料(HNMs)及其作为新型活性催化剂和抗菌剂应用的可能。使用两种方法制备BN/Ag纳米颗粒(NP)杂化物:(i)化学气相沉积(CVD),即BN NPs分散在Ag蒸气中,和(ii)BNNPs悬浮液中使用紫外线(UV)分解AgNO3。通过高分辨透射电子显微镜(HRTEM),配置了能量色散X射线(EDX)图谱,X射线光电子能谱(XPS)和红外光谱(FTIR)的高角度暗场扫

本研究探究了BN/Ag杂化纳米材料(HNMs)及其作为新型活性催化剂和抗菌剂应用的可能。使用两种方法制备BN/Ag纳米颗粒(NP)杂化物:(i)化学气相沉积(CVD),即BN NPs分散在Ag蒸气中,和(ii)BNNPs悬浮液中使用紫外线(UV)分解AgNO3。通过高分辨透射电子显微镜(HRTEM),配置了能量色散X射线(EDX)图谱,X射线光电子能谱(XPS)和红外光谱(FTIR)的高角度暗场扫描TEM成像表征所制备的纳米材料。

结果显示,纳米材料具有热稳定性,Ag +离子释放,催化和抗菌活性等特征。与CVD法制备的材料相比,UV分解AgNO3合成的材料表现出更好的催化活性。使用UV BN/Ag HNM,在600℃下在氧化气氛中不进行预先退火而获得最佳催化特性(在350℃下100%甲醇转化率)。这两种类型的BN/Ag HNM都对大肠杆菌K-261细菌具有很强的抗菌作用。

原始出处:


Konstantin L Firestein,corresponding, Denis V Leybo, et al., BN/Ag hybrid nanomaterials with petal-like surfaces as catalysts and antibacterial agents. Beilstein J Nanotechnol. 2018; 9: 250–261.

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