二维Ce-MOFs纳米片的合成及可见光介导脱羧氧化性能
Synthesis of 2DCe-MOFs nanosheets and visiblelight-mediated decarboxylation performance
查看参考文献26篇
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文摘
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以硝酸铈铵为金属盐,以1,3,5-三(4-羧基苯基)苯(H3BTB)为有机配体,利用醋酸作为调节剂,成功构筑二维Ce-MOFs纳米片。醋酸对Ce-MOFs的形貌和结晶度具有显著的调节作用。无醋酸调节的Ce-MOFs(称为Ce-BTB-H0)由较小的纳米片通过高度交联团聚成微米球,结晶度和比表面积均较低;醋酸调节的Ce-MOFs(称为Ce-BTB-H60)为分散的纳米片,纳米片二维尺寸较大,具有更高的结晶度和更大的比表面积。以蓝光LED为光源,氧气为氧化剂,室温条件下,二维Ce-MOFs纳米片催化剂可将不同取代基的苯乙酸脱羧氧化成相应的苯甲醛和苯甲醇。Ce-BTB-H60由于具有更高的结晶度、更大的比表面积以及更分散的纳米片结构,因此具有更优异的光催化性能。 |
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其他语种文摘
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Two-dimensional Ce-MOFs nanosheets were successfully constructed by using ceric ammonium nitrate as metal salt and 1,3,5-tris(4-carboxyphenyl)benzene(H3BTB)as organic ligand, together with the use of acetic acid as modulator.Acetic acid modulator shows significant effects on the morphology and crystallinity of Ce-MOFs.Ce-MOFs microspheres synthesized without acetic acid as modulator(named Ce-BTB-H0)are composed of highly cross-linked small nanosheets with low crystallinity and surface areas.On the contrary,Ce-MOFs synthesized with acetic acid(named Ce-BTB-H60)consist of dispersed nanosheets,and show improved crystallinity and higher surface areas than that of Ce-BTB-H0.Using blue LED as light source and oxygen as oxidant,two-dimensional Ce-MOFs nanosheets enable decarboxylation oxygenation of a variety of substituted phenylacetic acid to their corresponding benzaldehydes and benzyl alcoholsunder irradiation of blue LED in oxygen atmosphere at room temperature.Moreover,Ce-BTB-H60nanosheets show better photocatalytic performance due to their higher crystallinity,larger specific surface area and improved dispersity than that of Ce-BTB-H0. |
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来源
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材料工程
,2022,50(9):89-96 【核心库】
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DOI
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10.11868/j.issn.1001-4381.2022.000161
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关键词
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Ce-MOFs
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二维纳米片
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可见光催化
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脱羧氧化
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异相催化
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地址
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贵州师范大学化学与材料科学学院, 贵州省功能材料化学重点实验室, 贵阳, 550001
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1001-4381 |
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学科
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化学 |
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基金
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国家自然科学基金项目
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贵州省项目
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文献收藏号
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CSCD:7332143
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