用于有机染料催化还原和光降解的铜纳米颗粒修饰的海藻酸钠/钴掺杂氧化铈复合微球
Copper Nanoparticles Decorated Alginate/Cobalt-Doped Cerium Oxide Composite Beads for Catalytic Reduction and Photodegradation of Organic Dyes.
作者信息
Alshaikhi Hamed A, Asiri Abdullah M, Alamry Khalid A, Marwani Hadi M, Alfifi Soliman Y, Khan Sher Bahadar
机构信息
Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
出版信息
Polymers (Basel). 2022 Oct 21;14(20):4458. doi: 10.3390/polym14204458.
Cobalt-doped cerium oxide (Co-CeO) was synthesized and wrapped inside alginate (Alg) hydrogel beads (Alg/Co-CeO). Further, copper nanoparticles (Cu) were grown on Alg/Co-CeO beads. Cu decorated Alg/Co-CeO composite beads (Cu@Alg/Co-CeO) were tested as a catalyst for the solar-assisted photodegradation and NaBH-assisted reduction of organic pollutants. Among different dyes, Cu@Alg/Co-CeO was found to be the best catalyst for the photodegradation of acridine orange (ArO) under solar light and efficient in reducing methyl orange (MO) with the aid of NaBH. Cu@Alg/Co-CeO decolorized ArO up to 75% in 5 h under solar light, while 97% of MO was reduced in 11 min. The decolorization efficiency of Cu@Alg/Co-CeO was further optimized by varying different parameters. Thus, the designed catalyst provides a promising way for efficient oxidation and reduction of pollutants from industrial effluents.
合成了钴掺杂的氧化铈（Co-CeO），并将其包裹在海藻酸钠（Alg）水凝胶珠（Alg/Co-CeO）中。此外，在Alg/Co-CeO珠上生长了铜纳米颗粒（Cu）。对Cu修饰的Alg/Co-CeO复合珠（Cu@Alg/Co-CeO）作为太阳能辅助光降解和NaBH辅助还原有机污染物的催化剂进行了测试。在不同的染料中，发现Cu@Alg/Co-CeO是太阳光下吖啶橙（ArO）光降解的最佳催化剂，并且在NaBH的辅助下能有效还原甲基橙（MO）。在太阳光下，Cu@Alg/Co-CeO在5小时内可使ArO脱色达75%，而在11分钟内可使97%的MO被还原。通过改变不同参数进一步优化了Cu@Alg/Co-CeO的脱色效率。因此，所设计的催化剂为工业废水中污染物的高效氧化和还原提供了一条有前景的途径。
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