In the field of traditional industrial catalysis, metal-based catalytic materials dominate, but their non-renewability and environmental pollution are potential weaknesses of metal materials. How to develop an alternative green energy catalyst is the focus and focus of research in recent years. Nanodiamond is a kind of sp3 hybridized non-metallic carbon material. By simply controlling the calcination temperature (900~1500°C), two kinds of spoke type nanodiamonds (sp2/sp3 hybrid) and onion carbon (sp2) can be obtained. Carbon material. Nano-diamond surface contains a certain amount of sp2 hybrid carbon. This unique sp2/sp3 structure makes nano-diamond and its derivatives have more unique physical and chemical properties than traditional carbon materials.

Department of Catalysis, Chinese Academy of Sciences Institute of Materials Science, Shenyang, China (Joint) Laboratory of Materials Science and Technology Researcher Su Dangsheng and his team applied it to the field of catalysis and found that in some important industrial catalytic reactions, they showed comparable to traditional metal catalysts. Excellent performance. For example, onion carbon exhibits excellent catalytic activity and stability in the selective oxidation of liquid phenols to oximes. Recently, they have successively discovered that the regulation of heteroatoms (including N, B, P, etc.) in these three materials can effectively change their electronic structures and chemical properties, optimize their own structures, and further improve the performance of catalytic reactions and the expansion of non-metallic catalysts. Range of application. The results showed that the heteroatom groups in the propane-oxidation dehydrogenation reaction of borate and phosphate-modified Ba-based nanodiamonds can overcome the formation of electrophilic oxygen species and increase the selectivity of the target product.

In addition, boron, nitrogen, and phosphorus-modified onion carbons exhibit better methanol resistance and stability than commercial Pt/C even in electrocatalytic oxygen reduction reactions as non-metallic catalysts. In addition, the unique core-shell structure of the nano-diamonds used in the Baji-based diamond plays an important role in the immobilization of Pd nanoparticles and in the enhancement of catalytic oxidation of CO. Unlike sp2 hybrid carbon materials, sp3 hybrid carbon materials are still in the initial stage of catalytic applications. The related work of the catalytic materials research department is an international leader and has received the attention of many international counterparts. Related work has been published in: ACS Catalysis 5(2015) 5921, ACS Catalysis 5(2015) 2436, Chemical Communications 51(2015) 9145, Chemical Communications 51(2015) 13086, Journal of Materials Chemistry A 3(2015) 21805, Journal of Materials Chemistry A 3(2015) DOI: 10.1039/C5TA09539E, ChemSusChem 8(2015) 2872, ChemCatChem 7(2015) 2840, Angewandte Chemie International Edition (2015) DOI: 10.1002/anie.201507821. This work has applied for a patent, patent number 9.

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