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Light switching of amine oxidation products from oximes to imines: Superior activity of plasmonic gold nanorods-loaded TiO2(B) nanofibers under visible-near IR light
Applied Catalysis B: Environment and Energy ( IF 20.2 ) Pub Date : 2020-01-07 , DOI: 10.1016/j.apcatb.2020.118596
Yunheng Xiao , Yiming Huang , Song Xue , Jian Zhao

Gold nanorods (Au NRs) decorated TiO2(B) nanofibers have been fabricated by electrostatic interaction-annealing approach. The plasmonic Au NRs/TiO2(B) exhibits high visible-near IR light activity for coupling of amines to imines by air as oxidant in solvent-free conditions. Imines selectivity is switched from ∼50% in the dark to ∼80% under light irradiation and oximes selectivity is decreased from ∼49% in the dark to ∼19% under light irradiation. In the coupling of benzylamine to N-benzylidene benzylamine, the TOF (based on Au content) is up to 111.4∼149.5 h-1 for Au NRs/TiO2(B), while the TOF (based on Au surface area) is 3.7 and 4.1 times supported Au nanoparticle counterpart illuminating with visible light and visible-near IR light respectively.



中文翻译:

胺氧化产物从肟到亚胺的光转换:负载等离子金纳米棒的TiO 2(B)纳米纤维在可见光-近红外光下具有出色的活性

金纳米棒(Au NRs)装饰的TiO 2(B)纳米纤维已经通过静电相互作用退火方法制备。等离子Au NRs / TiO 2(B)在无溶剂条件下通过空气作为氧化剂将胺与亚胺偶联时,具有很高的可见光-近红外光活性。在光照射下,亚胺的选择性从暗处的约50%切换到约80%,肟在光照射下的选择性从暗处的约49%降低到约19%。在苄胺与N-亚苄基苄胺的偶合中,Au NRs / TiO 2的TOF(基于Au含量)高达111.4〜149.5 h -1(B),而TOF(基于Au表面积)是分别用可见光和近红外IR照明的支持的Au纳米粒子对应物的3.7和4.1倍。

更新日期:2020-01-07
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