Hydrogen Evolution Linked to Selective Oxidation of Glycerol over CoMoO4—A Theoretically Predicted Catalyst

Yu, XiaowenStockholms universitet,Institutionen för material- och miljökemi (MMK),State Key Laboratory of Crystal Materials Shandong University Jinan 250100 China;Department of Materials and Environmental Chemistry Arrhenius Laboratory Stockholm University Stockholm SE‐106 91 Sweden,Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.;Stockholm Univ, Arrhenius Lab, Dept Mat & Environm Chem, SE-10691 Stockholm, Sweden. (author)

QC 20220921
Electrochemical valorization of biomass waste (e.g., glycerol) for production of value-added products (such as formic acid) in parallel with hydrogen production holds great potential for developing renewable and clean energy sources. Here, a synergistic effort between theoretical calculations at the atomic level and experiments to predict and validate a promising oxide catalyst for the glycerol oxidation reaction (GOR) are reported, providing a good example of designing novel, cost-effective, and highly efficient electrocatalysts for producing value-added products at the anode and high-purity hydrogen at the cathode. The predicted CoMoO4 catalyst is experimentally validated as a suitable catalyst for GOR and found to perform best among the investigated metal (Mn, Co, Ni) molybdate counterparts. The potential required to reach 10 mA cm−2 is 1.105 V at 60 °C in an electrolyte of 1.0 ᴍ KOH with 0.1 ᴍ glycerol, which is 314 mV lower than for oxygen evolution. The GOR reaction pathway and mechanism based on this CoMoO4 catalyst are revealed by high-performance liquid chromatography and in situ Raman analysis. The coupled quantitative analysis indicates that the CoMoO4 catalyst is highly active toward C—C cleavage, thus presenting a high selectivity (92%) and Faradaic efficiency (90%) for formate production.

B. Araujo, RafaelStockholms universitet,Fysikum,Department of Physics Stockholm University Stockholm SE‐106 91 Sweden,Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.(Swepub:su)raba5638 (author)
Qiu, ZhenKTH,Kemiteknik,KTH Royal Inst Technol, Dept Chem Engn, SE-10044 Stockholm, Sweden.(Swepub:kth)u1m6uohg (author)
Campos dos Santos, EgonStockholms universitet,Fysikum,Department of Physics Stockholm University Stockholm SE‐106 91 Sweden,Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.(Swepub:su)egca6205 (author)
Anil, AthiraUppsala universitet,Institutionen för materialvetenskap(Swepub:uu)athan253 (author)
Cornell, Ann M.,1962-KTH,Tillämpad elektrokemi,Department of Chemical Engineering KTH Royal Institute of Technology Stockholm SE‐100 44 Sweden,KTH Royal Inst Technol, Dept Chem Engn, SE-10044 Stockholm, Sweden.(Swepub:kth)u1ciapzg (author)
Pettersson, Lars G. M.,1951-Stockholms universitet,Fysikum,Department of Physics Stockholm University Stockholm SE‐106 91 Sweden,Stockholm Univ, Dept Phys, SE-10691 Stockholm, Sweden.(Swepub:su)lgm (author)
Johnsson, MatsStockholms universitet,Institutionen för material- och miljökemi (MMK),Department of Materials and Environmental Chemistry Arrhenius Laboratory Stockholm University Stockholm SE‐106 91 Sweden,Stockholm Univ, Arrhenius Lab, Dept Mat & Environm Chem, SE-10691 Stockholm, Sweden.(Swepub:su)matjo (author)
Stockholms universitetInstitutionen för material- och miljökemi (MMK) (creator_code:org_t)

By the author/editor: Yu, Xiaowen; B. Araujo, Rafae ...; Qiu, Zhen; Campos dos Santo ...; Anil, Athira; Cornell, Ann M., ...; show more...; Pettersson, Lars ...; Johnsson, Mats; show less...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Chemical Enginee ...; and Chemical Process ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Chemical Enginee ...; and Other Chemical E ...

By the university: Stockholm University; Royal Institute of Technology; Uppsala University

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