Laser Photochemistry Laboratory

217. Density-controlled metalloporphyrin with mutated surface via pulsed laser for oxidative refining of alcohols to benzoic acid and H2 production using linear tandem electrolysis
Talshyn Begildayeva†, Jayaraman Theerthagiri†, Ahreum Min†, Cheol Joo Moon, Myong Yong Choi*

Applied Catalysis B: Environment and Energy
Vol, Part
Page Number
123907 (2024)
Publication Year

5 August 2024
IF(2022): 22.1
JCR: 99.1
2019R1A6C1010042, 2021R1A6C103A427, 2022R1A2C2010686, 2022R1A4A3033528, 2021R1I1A1A01060380, 2019H1D3A1A01071209, 2021R1C1C2010726


Abstract: A highly selective and multifunctional electrocatalyst is constructed by combining 
a single-phase Ni3S2 obtained via pulsed laser ablation in liquids and different contents of 

nickel  tetraphenylporphyrin  (NiTPP) complex.  Catalytic  performance  is assessed  in consecutive hydrogen and oxygen evolution and benzyl alcohol oxidation reactions, in which 

the optimal NiS-NiTPP10% exhibits the highest activity with overpotentials of 435, 320, and 170  mV,  respectively.  Moreover,  NiS-NiTPP10%  favors alcohol  oxidation  reactions and 

produces benzoic acid at a yield rate of 2.23 mM h−1cm−2 with 100% mass balance, 98.3% Faradaic efficiency, and 99.8% selectivity. Finally, the system with simultaneous H2 evolution 

and value-added benzoic acid production is successfully employed in a NiS-NiTPP10%||NiS-NiTPP10% electrolyzer, resulting in a high Faradaic efficiency of 81% and 99% and yield 

rate of 0.42 and 4.03 mM h−1 cm−2, respectively, at a lower cell voltage of 193 mV than the standard water electrolyzer. The phenyl rings of NiTPP could act as the terminal for the 

benzyl alcohol molecule, and the high surface area of Ni3S2 could accelerate the oxidation process; hence, both Ni3S2 and NiTPP boost the performance of NiS-NiTPP10% via charge- 

density modulation and strong synergetic effects.