Hydroxyl radical generation by cactus-like copper oxide nanoporous carbon catalysts for microcystin-LR environmental remediation
Hydroxyl radical generation by cactus-like copper oxide nanoporous carbon catalysts for microcystin-LR environmental remediation
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DOI：
10.1039/c5cy00888c
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发表时间：
2016-01-01
影响因子：
5
通讯作者：
Sekaran, G.
中科院分区：
文献类型：
--
作者：
Karthikeyan, S.;Dionysiou, Dionysios D.;Sekaran, G.
报道了纳米多孔活性炭负载氧化铜（CuO-NPAC）催化降解水相微囊藻毒素-LR（MC-LR）。CuO在NPAC中的负载量和空间分布对催化效率有很大影响。通过XRD、BET、TEM、SEM、EPR、TGA、XPS和FT-IR等手段对材料的物化性能进行了表征。EPR自旋捕获和荧光光谱显示原位。在CuO-NPAC作为催化相关氧化剂上通过H2 O2形成OH。反应条件的影响，特别是CuO-NPAC负载，过氧化氢浓度和溶液pH值，讨论了有关MC-LR修复的反应动力学。
Copper oxide supported on nanoporous activated carbon (CuO-NPAC) is reported for the aqueous phase catalytic degradation of cyanotoxin microcystin-LR (MC-LR). The loading and spatial distribution of CuO throughout the NPAC matrix strongly influence the catalytic efficiency. CuO-NPAC synthesis was optimized with respect to the copper loading and thermal processing, and the physicochemical properties of the resulting materials were characterized by XRD, BET, TEM, SEM, EPR, TGA, XPS and FT-IR spectroscopy. EPR spin trapping and fluorescence spectroscopy showed in situ. OH formation via H2O2 over CuO-NPAC as the catalytically relevant oxidant. The impact of reaction conditions, notably CuO-NPAC loading, H2O2 concentration and solution pH, is discussed in relation to the reaction kinetics for MC-LR remediation.