journal article·2024-05-28

Highly Dispersed Ni Atoms and O3 Promote Room-Temperature Catalytic Oxidation

Ruijie Yang, Wanjian Zhang, Yuefeng Zhang, Yingying Fan, Rongshu Zhu, Jian Jiang, Liang Mei, Zhaoyong Ren, Xiao He, Jinguang Hu, Zhangxin Chen, Qingye Lu, Jiang Zhou, Haifeng Xiong, Hao Li, Xiao Cheng Zeng, Zhiyuan Zeng

ACS Nano· Volume 18· Issue 21
Publisher page

Abstract

Transition metal oxides are promising catalysts for catalytic oxidation reactions but are hampered by low room-temperature activities. Such low activities are normally caused by sparse reactive sites and insufficient capacity for molecular oxygen (O 2 ) activation. Here, we present a dual-stimulation strategy to tackle these two issues. Specifically, we import highly dispersed nickel (Ni) atoms onto MnO 2 to enrich its oxygen vacancies (reactive sites). Then, we use molecular ozone (O 3 ) with a lower activation energy as an oxidant instead of molecular O 2 . With such dual stimulations, the constructed O 3 –Ni/MnO 2 catalytic system shows boosted room-temperature activity for toluene oxidation with a toluene conversion of up to 98%, compared with the O 3 –MnO 2 (Ni-free) system with only 50% conversion and the inactive O 2 –Ni/MnO 2 (O 3 -free) system. This leap realizes efficient room-temperature catalytic oxidation of transition metal oxides, which is constantly pursued but has always been difficult to truly achieve.
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Research context

OpenAlex topics: Catalytic Processes in Materials Science · Catalysis and Oxidation Reactions · Electrocatalysts for Energy Conversion

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, P. R. China

Department of Materials Science and Engineering and State Key Laboratory of Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, P. R. China

Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary Alberta T2N 1N4, Canada

School of Materials Science and Engineering, Hunan Provincial Key Laboratory of Electronic Packaging and Advanced Functional Materials, Central South University, Changsha, Hunan 410083, P. R. China

State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China

Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan

Shenzhen Research Institute, City University of Hong Kong, Shenzhen 518057, P. R. China

Funding

Research Grants Council, University Grants Committee · State Key Laboratory of Urban Water Resource and Environment · Science, Technology and Innovation Commission of Shenzhen Municipality · City University of Hong Kong · Natural Sciences and Engineering Research Council of Canada · Alberta Innovates · State Key Laboratory of Marine Pollution, City University of Hong Kong · Shenzhen City · Special Project for Sustainable Development Science Technology in Shenzhen

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