A Combinatorial Approach for Optimization of Oxygen Evolution Catalyst Loading on Mo‐doped BiVO4 Photoanodes. Issue 8 (22nd May 2019)

• Record Type: Journal Article
• Authors: Gutkowski, Ramona; Masa, Justus; Schuhmann, Wolfgang
• Is Part Of: Electroanalysis. Volume 31:Issue 8(2019)
• Page Start: 1500
• Page End: 1506
• Publication Date: 2019-05-22
• Subjects: Mo-doped BiVO4 -- OER catalyst -- scanning droplet cell -- photoelectrochemistry -- photocurrent; Electrochemical analysis -- Periodicals; Chemistry, Analytical -- Periodicals; Electrochemistry -- Periodicals; 543.4
• DOI: 10.1002/elan.201900147
• Languages: English
• ISSNs: 1040-0397

Abstract

Abstract: The incident photon to current efficiency (IPCE) of a photoactive surface strongly depends on the loading and thickness of the active materials. We present a combinatorial approach based on an optical scanning droplet cell for simultaneous deposition and systematic characterization of co‐catalysts for the oxygen evolution reaction (OER) on Mo‐doped BiVO4 (Mo−BiVO4 ) photoanodes electrochemically pre‐deposited on transparent conductive FTO substrates. The loading and photoelectrochemical characterization of 10 different OER co‐catalysts deposited by three different deposition techniques on FTO‐supported Mo−BiVO4 were investigated aiming at determination of the suitable deposition parameters affording the highest enhancement of photoelectrochemical oxygen evolution for the different OER/Mo−BiVO4 films. A comparison of the photoelectrochemical performance of films of various OER co‐catalyst deposited on FTO‐supported Mo−BiVO4 by electrodeposition, photo‐assisted electrodeposition and photodeposition revealed the necessity of a material specific optimization with respect to co‐catalyst loading and deposition technique to achieve optimal IPCE for each co‐catalysts. Abstract :