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Low density magnetic silicate-nickel alloy composite hollow structures: seed induced direct assembly fabrication and catalytic properties
RSC Advances ( IF 3.9 ) Pub Date : 2020-9-24 , DOI: 10.1039/d0ra00893a Gaiping Du 1, 2 , Bin Liao 1 , Ran Liu 1, 2 , Zhenguo An 1 , Jingjie Zhang 1
RSC Advances ( IF 3.9 ) Pub Date : 2020-9-24 , DOI: 10.1039/d0ra00893a Gaiping Du 1, 2 , Bin Liao 1 , Ran Liu 1, 2 , Zhenguo An 1 , Jingjie Zhang 1
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An efficient seed induced direct assembly route is designed for the controlled synthesis of hollow microsphere supported catalysts (HMSCs) with nickel alloy as the active material. The inherent magnetic response of nickel alloy endows HMSCs magnetic separability, and the hollow interior of the support opens a new avenue for self-floating separation. It is found that the introduction of P and Co contributes largely to the improvement of the catalytic performance of the products, which may attributed to synergistic effects and electron transfer. Moreover, the loading amounts of alloy nanoparticles can be easily tailored through properly monitoring the reaction conditions. With the optimized loading of 2.68 wt%, the kN of HMSC–NiCoP-2.68 wt% reaches 14.0 s−1 g−1 for the catalytic reduction of p-nitrophenol (4-NP), which is higher than commercial 5 wt% Pd/C of 11.6 s−1 g−1 under the same conditions. This work provides additional insights into preparation and property control of an easily separable supported non-noble metal catalyst, which holds potential to be extended to the preparation and property control of other metal nanocatalysts on various supports.
中文翻译：
低密度磁性硅酸盐镍合金复合空心结构：种子诱导直接组装制造和催化性能
设计了一种有效的种子诱导直接组装路线，用于以镍合金为活性材料的空心微球负载催化剂（HMSCs）的可控合成。镍合金固有的磁响应赋予了HMSCs磁分离性，而支撑体的中空内部为自浮分离开辟了一条新途径。发现P和Co的引入很大程度上有助于提高产物的催化性能，这可能归因于协同效应和电子转移。此外，通过适当监测反应条件，可以轻松调整合金纳米颗粒的负载量。在 2.68 wt% 的优化负载下，HMSC–NiCoP-2.68 wt% 的k N达到 14.0 s -1 g -1用于对硝基苯酚（4-NP）的催化还原，在相同条件下高于11.6 s -1 g -1的商业5 wt% Pd/C。这项工作为易于分离的负载型非贵金属催化剂的制备和性能控制提供了额外的见解，该催化剂具有扩展到各种载体上其他金属纳米催化剂的制备和性能控制的潜力。
更新日期：2020-09-24
中文翻译：
低密度磁性硅酸盐镍合金复合空心结构：种子诱导直接组装制造和催化性能
设计了一种有效的种子诱导直接组装路线，用于以镍合金为活性材料的空心微球负载催化剂（HMSCs）的可控合成。镍合金固有的磁响应赋予了HMSCs磁分离性，而支撑体的中空内部为自浮分离开辟了一条新途径。发现P和Co的引入很大程度上有助于提高产物的催化性能，这可能归因于协同效应和电子转移。此外，通过适当监测反应条件，可以轻松调整合金纳米颗粒的负载量。在 2.68 wt% 的优化负载下，HMSC–NiCoP-2.68 wt% 的k N达到 14.0 s -1 g -1用于对硝基苯酚（4-NP）的催化还原，在相同条件下高于11.6 s -1 g -1的商业5 wt% Pd/C。这项工作为易于分离的负载型非贵金属催化剂的制备和性能控制提供了额外的见解，该催化剂具有扩展到各种载体上其他金属纳米催化剂的制备和性能控制的潜力。
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