Eduardo Arenas-Sánchez, Carlos Eduardo Niño González, Valeria Resendiz-Bujaidar, Elena Smolentseva, Brenda Acosta
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引用次数: 0
摘要
本研究首次采用微调一锅法合成了 PdRu@mSiO2 双金属核壳纳米反应器(NRs)。以 4-硝基苯酚(4-NP)、1-氯-4-硝基苯(1-Cl-4-NB)、4-硝基甲苯(4-NT)和 2,4-二硝基苯酚(2,4-DNP)为试剂,在硝基arenes 的还原过程中对所获得的 NR 进行了评估。Pd1:Ru1 摩尔比的介孔 PdRu@mSiO2 NR 呈现出均匀的球形形态,每个胶囊有一个单核。各种技术证实了 Pd-Ru 合金的形成。与参考催化剂(游离和支撑纳米粒子(NPs))和文献报道的催化剂相比,双金属 NRs 表现出更高的催化活性和稳定性。所研究的硝基烯烃化合物的催化活性顺序为 4-NP>1-Cl-4-NB>2,4-DNP>4-NT。NR 的催化活性受试剂分子间和分子内相互作用的影响。一锅法合成 NRs 成本低、效果好,可用于催化还原各种有害物质。
Reduction of Nitroarenes Using Efficient PdRu@mSiO2 Nanocatalyst Synthesized by a One-Pot Approach
In the present work, PdRu@mSiO2 bimetallic core-shell nanoreactors (NRs) are synthesized for the first time by a fine-tuning one-pot method. The obtained NRs are evaluated in the reduction of nitroarenes using 4-nitrophenol (4-NP), 1-chloro-4-nitrobenzene (1-Cl-4-NB), 4-nitrotoluene (4-NT) and 2,4-dinitrophenol (2,4-DNP) as reagents. The mesoporous PdRu@mSiO2 NRs with a Pd1:Ru1 molar ratio present a homogenous spherical morphology with a single nucleus per capsule. Various techniques confirm the formation of Pd-Ru alloy. The bimetallic NRs show higher catalytic activity and stability compared with the reference catalysts (free and supported nanoparticles (NPs)) and with those reported in the literature. The order of catalytic activity for studied nitroarene compounds is 4-NP>1-Cl-4-NB>2,4-DNP>4-NT. The catalytic activity of NRs is affected by inter and intramolecular interactions between the reagent molecules. The one-pot method of NRs synthesis is low-cost and effective, with possible application in the catalytic reduction of various hazardous materials.
期刊介绍:
Advanced Materials Interfaces publishes top-level research on interface technologies and effects. Considering any interface formed between solids, liquids, and gases, the journal ensures an interdisciplinary blend of physics, chemistry, materials science, and life sciences. Advanced Materials Interfaces was launched in 2014 and received an Impact Factor of 4.834 in 2018.
The scope of Advanced Materials Interfaces is dedicated to interfaces and surfaces that play an essential role in virtually all materials and devices. Physics, chemistry, materials science and life sciences blend to encourage new, cross-pollinating ideas, which will drive forward our understanding of the processes at the interface.
Advanced Materials Interfaces covers all topics in interface-related research:
Oil / water separation,
Applications of nanostructured materials,
2D materials and heterostructures,
Surfaces and interfaces in organic electronic devices,
Catalysis and membranes,
Self-assembly and nanopatterned surfaces,
Composite and coating materials,
Biointerfaces for technical and medical applications.
Advanced Materials Interfaces provides a forum for topics on surface and interface science with a wide choice of formats: Reviews, Full Papers, and Communications, as well as Progress Reports and Research News.