Sr2+取代对CoAl2O4纳米颗粒结构、光学和催化性能的影响

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-07-01 DOI:10.15251/djnb.2023.183.915

G. Anitha, R. Jothiramalingam, M. Sukumar, A. Roniboss, S. Yuvaraj, G. Ramkumar, M. Sundararajan, S. Arokiyaraj

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引用次数: 0

摘要

以l -丙氨酸为燃料，采用微波燃烧技术制备了锶取代的纳米CoAl2O4。采用XRD、HR-SEM、EDX、DRS、FT-IR、VSM等技术对合成的样品进行了测试。表面形貌表现为片状纳米晶粒团聚，纳米孔洞为熔接晶界。采用Kubelka-Munk (K-M)函数计算带隙，带隙从3.32 eV减小到3.18 eV。Sr2+掺杂的CoAl2O4纳米颗粒(NPs)具有立方结构，其Ft-IR波段在560 ~ 1100 cm-1之间。双功能NPs CoAl2O4/SrO (x = 0.5)对甘油具有优异的催化性能和较高的转化率(转化率98%，选择性95%)

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Influence of Sr2+ substitution on structural, optical and catalytic properties of CoAl2O4 nanoparticles

Strontium substituted CoAl2O4 nanoparticles were prepared using a microwave combustion technique using L-alanine as a fuel. The following techniques were used to test the synthesized samples such as XRD, HR-SEM, EDX, DRS, FT-IR and VSM respectively.. Surface morphology showed nanosized crystalline grains agglomerated with flake-like and nano-sized pores are fused grain boundaries. The band gap was calculated using Kubelka-Munk (K-M) function and it is reduced from 3.32 to 3.18 eV. The Ft-IR bands ranging from 560 to 1100 cm-1 are caused by the cubic structure of Sr2+ doped CoAl2O4 nanoparticles(NPs). The bi-functional NPs CoAl2O4/SrO (x = 0.5) exhibited excellent catalytic performance and better conversion efficiency (conversion 98% and selectivity 95%) for glycerol

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