首页|Cotton-derived carbon fiber-supported Ni nanoparticles as nanoislands to anchor single-atom Pt for efficient catalytic reduction of 4-nitrophenol
Cotton-derived carbon fiber-supported Ni nanoparticles as nanoislands to anchor single-atom Pt for efficient catalytic reduction of 4-nitrophenol
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Excessive price and scarcity of Pt species make it very necessary to enhance the atom utilization and catalytic efficiency of Pt catalysts for implementing their industrial practicality.Here,natural cotton is adopted as the precursor to in-situ support well-dispersed and uniform-sized Ni nanoparticles,which then work as nanoislands to effectively deposit single-atom Pt via the galvanic replacement reaction.On the resulting fibrous carbon matrix,the monocrystalline Ni particles are verified to tightly anchor isolated Pt atoms to form the alloyed PtNi nanoparticles.In the 4-nitrophenol(4-NP)reduction to 4-aminophenol(4-AP),the catalytic activity of the bimetallic PtNi/C catalyst with the low Pt loading(0.81%)maximally reaches 25 times as high as the primary Ni/C product.Simulated calculations demonstrate that the single-atom Pt centers on PtNi nanoparticles rapidly capture and split H2 molecules,while Ni atoms strongly adsorb 4-NP molecule to activate the-NO2 group.Therefore,the trapped H atom could easily attack the-NO2 and reduce 4-NP.
PtNiCottonCarbon fiberBimetallic catalystSingle atom
Xiaoyan Yang、Jiaren Wang、Yunbao Wei
展开 >
School of Chemistry and Chemical Engineering,Shangqiu Normal University,Shangqiu 476000,China
State Key Laboratory of Separation Membranes and Membrane Processes,School of Environmental Science and Engineering,Tiangong University,Tianjin 300387,China
NSTL
