Biopolymer stabilized nanoparticles as co-catalysts for photocatalytic water oxidations
Biopolymer stabilized nanoparticles as co-catalysts for photocatalytic water oxidations
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DOI：
10.1039/c1py00037c
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发表时间：
2011-05
影响因子：
4.6
通讯作者：
Yi‐Yeoun Kim;F. Meldrum;D. Walsh
中科院分区：
文献类型：
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作者：
Yi‐Yeoun Kim;F. Meldrum;D. Walsh
一系列钴、铁和锰氧化物纳米颗粒的葡聚糖和羧化葡聚糖生物聚合物涂层以及涂覆有金属氧化物纳米颗粒的可重复使用的生物聚合物珠被制备、分析和评估，作为保存用于水性光催化水氧化的高表面积助催化剂的手段。发现纳米颗粒的稳定化抑制聚集并允许相对于商业未涂覆的钴氧化物纳米颗粒发生有效的水氧化。在测试的功能性生物聚合物纳米材料的范围内发现的氧气产生的相对速率的可能原因进行了讨论。
Dextran and carboxylated dextran biopolymer coating of a range of cobalt, iron and manganese oxide nanoparticles and also reusable biopolymer beads coated with metal oxide nanoparticles are prepared, analysed and evaluated as a means of preserving high surface area co-catalysts for aqueous photocatalytic water oxidations. Stabilization of the nanoparticles is found to inhibit aggregation and allow efficient water oxidations to take place relative to commercial uncoated cobalt oxide nanoparticles. Possible reasons for the relative rates of oxygen production found within the range of functional biopolymer–nanomaterials tested are discussed.