Photoelectrocatalytic Surfactant Pollutant Degradation and Simultaneous Green Hydrogen Generation
Journal article, 2023
For the first time, we demonstrate a photoelectrocatalysistechniquefor simultaneous surfactant pollutant degradation and green hydrogengeneration using mesoporous WO3/BiVO4 photoanodeunder simulated sunlight irradiation. The materials properties suchas morphology, crystallite structure, chemical environment, opticalabsorbance, and bandgap energy of the WO3/BiVO4 films are examined and discussed. We have tested the anionic type(sodium 2-naphthalenesulfonate (S2NS)) and cationic type surfactants(benzyl alkyl dimethylammonium compounds (BAC-C12)) as model pollutants.A complete removal of S2NS and BAC-C12 surfactants at 60 and 90 min,respectively, by applying 1.75 V applied potential vs RHE to the circuit,under 1 sun was achieved. An interesting competitive phenomenon forphotohole utilization was observed between surfactants and adsorbedwater. This led to the formation of H2O2 fromwater alongside surfactant degradation (anode) and hydrogen evolution(cathode). No byproducts were observed after the direct photoholemediated degradation of surfactants, implying its advantage over otherAOPs and biological processes. In the cathode compartment, 82.51 mu mol/cm(2) and 71.81 mu mol/cm(2) of hydrogen gas weregenerated during the BAC-C12 and S2NS surfactant degradation process,respectively, at 1.75 V RHE applied potential.
Author
[Person 90f554d2-9fb4-4b44-a8cd-f459990ad971 not found]
Swansea University
[Person 0075f4cc-d2d8-4274-acbd-c27d57f3bcd6 not found]
Swansea University
[Person e7363f9c-df92-47c8-b39a-e895a7364f47 not found]
University of Bath
[Person b53f757a-c50d-44a4-864e-b32891a311f0 not found]
Swansea University
[Person f90a60ab-14c1-434e-8580-2d3b092838ee not found]
Chalmers, Chemistry and Chemical Engineering, Energy and Material
[Person 950f45d1-b7d0-4d27-8707-041391a2c483 not found]
Swansea University
[Person 75c65e5a-21f6-4d13-8af5-cb7b7c47f6e8 not found]
Swansea University
[Person e6f04778-1994-4328-be69-1bae898b859b not found]
Heriot-Watt University
[Person 73dc9f19-b30d-4222-933d-0c3f91a7eade not found]
Fraunhofer Society
[Person c328b21a-799a-4278-b017-22c04b321ec0 not found]
Swansea University
Heriot-Watt University
Industrial & Engineering Chemistry Research
0888-5885 (ISSN) 1520-5045 (eISSN)
Vol. In PressSubject Categories (SSIF 2011)
Chemical Engineering
DOI
10.1021/acs.iecr.3c00840