在高度多孔的 ZnO/炭黑-纤维素醋酸酯片上简便合成 CuAg 纳米粒子，用于还原/降解硝基芳烃和偶氮染料。
A facile synthesis of CuAg nanoparticles on highly porous ZnO/carbon black-cellulose acetate sheets for nitroarene and azo dyes reduction/degradation.
机构信息
Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Department of Chemistry, University of Swabi, Anbar 23561, Khyber Pakhtunkhwa, Pakistan.
Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia; Department of Chemistry, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia.
出版信息
Int J Biol Macromol. 2019 Jun 1;130:288-299. doi: 10.1016/j.ijbiomac.2019.02.114. Epub 2019 Feb 20.
A facile and highly porous heterostructure nanocomposite was designed for the support of zero-valent metal nanoparticles. This nanocomposite comprising of ZnO/carbon black (ZnO/CB) embedded in cellulose acetate polymer (CA), named as ZCA sheet, supported the metallic Cu, Ag and bimetallic CuAg nanoparticles (NPs). The ZnO/CB was incorporated to CA polymer host molecule in 3, 4 and 5 wt% and are designated as ZCA-3, ZCA-4 and ZCA-5. The catalytic tunability was evaluated for CuAg/ZCA-5 by adjusting the concentration of Cu and Ag ions in different molar ratio. Therefore, the CuAg/ZCA-5 was further selected for the removal of eight model pollutants comprising of o-nitrophenol (ONP), m-nitrophenol (MNP), p-nitrophenol (PNP), 2,6-dinitrophenol (DNP), methyl orange (MO), congo red (CR), methylene blue (MB) and rhodamine B (RB). The K value for PNP was 1.9 × 10 min and 9.0 × 10 min for MO Among the various nitrophenols, the rate of reaction with CuAg/ZCA-5 followed the ordered as PNP ˃ ONP ˃ MNP ˃ DNP, while methyl orange (MO) is degraded faster as compared to other dyes. The morphology, shape, elemental analysis, functional groups and peak crystallinity were scrutinized through FESEM, EDS, ATR-FTIR and XRD respectively.
一种简便且具有高多孔性的杂化纳米复合材料被设计用于负载零价金属纳米颗粒。这种由 ZnO/炭黑（ZnO/CB）嵌入醋酸纤维素聚合物（CA）中组成的纳米复合材料，命名为 ZCA 片，负载了金属 Cu、Ag 和双金属 CuAg 纳米颗粒（NPs）。ZnO/CB 以 3、4 和 5 wt%的比例掺入 CA 聚合物主链分子中，分别命名为 ZCA-3、ZCA-4 和 ZCA-5。通过调整不同摩尔比的 Cu 和 Ag 离子浓度，对 CuAg/ZCA-5 的催化可调性进行了评估。因此，进一步选择 CuAg/ZCA-5 来去除包括邻硝基苯酚（ONP）、间硝基苯酚（MNP）、对硝基苯酚（PNP）、2,6-二硝基苯酚（DNP）、甲基橙（MO）、刚果红（CR）、亚甲蓝（MB）和罗丹明 B（RB）在内的 8 种模型污染物。PNP 的 K 值为 1.9×10 min，MO 的 K 值为 9.0×10 min。在各种硝基酚中，与 CuAg/ZCA-5 的反应速率按 PNP＞ONP＞MNP＞DNP 的顺序排列，而与其他染料相比，MO 降解得更快。通过 FESEM、EDS、ATR-FTIR 和 XRD 分别对形貌、形状、元素分析、官能团和峰结晶度进行了分析。
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