Photoelectrochemical Hydrogen Production Using New Combinatorial Chemistry Derived Materials

Jaramillo, Thomas F. ; Baeck, Sung-Hyeon ; Kleiman-Shwarsctein, Alan ; Stucky, Galen D. (PI) ; McFarland, Eric W. (PI)

University of California, Santa Barbara

关键词: Titanium;    Hydrogen Production;    Zinc Oxides Photoelectrochemical Hydrogen Production, Combinatorial Chemistry, Mixed Metal Oxides, Water-Splitting, High-Throughput;    Surface Area;    08 Hydrogen;   

DOI  :  10.2172/884961
RP-ID  :  DOE/GO/11092-F
RP-ID  :  FC36-01GO11092
RP-ID  :  884961

美国|英语

来源: UNT Digital Library

【 摘 要 】

Solar photoelectrochemical water-splitting has long been viewed as one of the “holy grails” of chemistry because of its potential impact as a clean, renewable method of fuel production. Several known photocatalytic semiconductors can be used; however, the fundamental mechanisms of the process remain poorly understood and no known material has the required properties for cost effective hydrogen production. In order to investigate morphological and compositional variations in metal oxides as they relate to opto-electrochemical properties, we have employed a combinatorial methodology using automated, high-throughput, electrochemical synthesis and screening together with conventional solid-state methods. This report discusses a number of novel, high-throughput instruments developed during this project for the expeditious discovery of improved materials for photoelectrochemical hydrogen production. Also described within this report are results from a variety of materials (primarily tungsten oxide, zinc oxide, molybdenum oxide, copper oxide and titanium dioxide) whose properties were modified and improved by either layering, inter-mixing, or doping with one or more transition metals. Furthermore, the morphologies of certain materials were also modified through the use of structure directing agents (SDA) during synthesis to create mesostructures (features 2-50 nm) that increased surface area and improved rates of hydrogen production.