Special Issue "Nanomaterials for Solar Water Splitting"
Deadline for manuscript submissions: closed (31 July 2018)
Prof. Dr. Ho Won Jang
Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
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Interests: materials for solar water splitting, chemical sensors, meristors, plasmonics, metal-insulator transition, and ferroelectricity
Dr. Uk Sim
Department of Materials Science and Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea
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Interests: solar-to-fuel production by photovoltaic/electrolysis or photoelectrochemical cell systems; multi-functional low-dimensional nanostructured materials; in situ surface/interface analysis during electrochemical reaction
Development of sustainable energy sources is an imperative issue that must deal with the current and growing demand in terms of world energy consumption. Among the various types of sustainable energy sources, hydrogen is considered to be one of the most promising sources of renewable energy, and it has a high energy density. Hydrogen production via solar energy has been widely studied as an environmentally-friendly and sustainable source of energy. Considering the thermodynamic potential, a single-component semiconductor that possesses a higher band gap than 1.23 V can simultaneously generate hydrogen and oxygen gas from water. However, overall water splitting through a single-component conventional semiconductor is usually limited by kinetic overpotential. To solve this limiting factor, there is a need for the development of a comprehensive photocatalyst with distinctive features, such as nano-sized structures, surface functionalization, decoration with co-catalyst, etc. Numerous developments in photoelectrochemical cells have also been put into place in order to overcome the inherent weakness of one-component approaches. Photoelectrochemical cells are comprised of a separate cathode and anode, and can be easily implemented in terms of tenability and efficiency. Efficient nano-sized co-catalysts for water splitting also present one of the most important and challenging issues for the implementation of photoelectrochemical hydrogen production. Inherent discovery of an efficient catalytic nanomaterial would also constitute an important and challenging issue for the implementation of photoelectrochemical fuel production. A critical requirement for outstanding catalysts is, not only its ability to boost the kinetics of a chemical reaction, but also provide the necessary durability against electrochemical and photo-induced degradation. Generally, precious metals, such as platinum, exhibit superior performance under these requirements; however, the high cost of precious metals are another challenging barrier for their widespread commercial use. To address this critical and long-standing technical barrier, intense research efforts for developing an efficient, durable, and inexpensive alternative catalytic nanomaterial have been recommended, which comprises low-dimensional transitional metal dichalcogenide, carbon-based platforms, and earth-abundant nanomaterials.
The Special Issue of the journal Applied Sciences, “Nanomaterials for Solar Water Splitting”, aims to cover recent advances in the development of various kinds of nanomaterials related to photocatalyst, photoelectrode, and co-catalysts intended for solar-driven water splitting.
Prof. Dr. Ho Won Jang
Dr. Uk Sim
Manuscript Submission Information
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- Solar water splitting
- Photoelectrochemical Cell
- Hydrogen production
- Solar-driven Fuel Production