Pt-decorated CuO nanosheets and their application in the visible light photocatalytic water splitting reaction

Kadi, Mohammad W.; Mohamed, Reda M.

doi:10.1007/s13204-020-01534-4

Cited by 9 publications

(7 citation statements)

References 31 publications

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“…The cocatalysts can be classified into two roles: the cocatalyst trapping electrons for reduction half reactions (e.g., reduction of H 2 O or CO 2 ) and the cocatalyst trapping holes for oxidation half reactions (e.g., oxidation of H 2 O or organic species). In general, noble metals (e.g., Pt, Pd, Rh and Au, Ru) [ 39 , 48 , 236 , 237 , 238 , 239 , 240 ], non-noble transition metals (e.g., Cu, Zn, Al, Co and Ni) [ 184 , 241 , 242 , 243 , 244 , 245 ], metal oxides (RuO 2 , NiO x, Bi 2 O 3 ) [ 80 , 190 , 246 , 247 , 248 ] and metal sulfides (e.g., ZnS, MoS 2 , NiS, Ag 2 S, and WS 2 ) [ 187 , 245 , 249 , 250 , 251 ] were reported as cocatalysts deposited on CuO and/or Cu 2 O.…”

Section: Further Approaches Of Photo-efficiency Improvingmentioning

confidence: 99%

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Baran¹,

Visibile

Busch

et al. 2021

Molecules

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This work aims at reviewing the most impactful results obtained on the development of Cu-based photocathodes. The need of a sustainable exploitation of renewable energy sources and the parallel request of reducing pollutant emissions in airborne streams and in waters call for new technologies based on the use of efficient, abundant, low-toxicity and low-cost materials. Photoelectrochemical devices that adopts abundant element-based photoelectrodes might respond to these requests being an enabling technology for the direct use of sunlight to the production of energy fuels form water electrolysis (H2) and CO2 reduction (to alcohols, light hydrocarbons), as well as for the degradation of pollutants. This review analyses the physical chemical properties of Cu2O (and CuO) and the possible strategies to tune them (doping, lattice strain). Combining Cu with other elements in multinary oxides or in composite photoelectrodes is also discussed in detail. Finally, a short overview on the possible applications of these materials is presented.

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Section: Further Approaches Of Photo-efficiency Improvingmentioning

confidence: 99%

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Baran¹,

Visibile

Busch

et al. 2021

Molecules

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“…have reported two-dimensional copper oxide nanosheet bundles as OER electrocatalysts for water-splitting applications . Kadi and Mohamed improved the synthesis method and obtained Pt-decorated CuO nanosheets . The Du group made a systematic study in the field of CuO-based OER catalysts with different microstructures using simple copper salts or metallic copper as raw materials. − The Sun group has reported a Co-doped CuO nanoarray as an efficient OER catalyst .…”

Section: Introductionmentioning

confidence: 99%

Engineering Oxygen Vacancies in Mesocrystalline CuO Nanosheets for Water Oxidation

Liang

Niu

Zhang

et al. 2021

ACS Appl. Nano Mater.

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Tailoring relatively inert Cu oxides for high-performance oxygen evolution reaction (OER) electrocatalysts is of great practical significance but extremely challenging. Herein, CuO MCSs enriched with O vacancies have been fabricated via an appealing metal–organic framework (MOF)-based topotactic alkalization route for the first time. Mechanism analysis indicates that the formation of the CuO mesocrystal superstructure undergoes a gradual structural evolution from nanocrystal to nanobelt and then to nanosheet with escalating order. The porous two-dimensional nanosheet coupled with mesocrystal characteristic endows CuO MCSs with rich surface active sites and significantly improved electric conductivity. When served as an OER electrocatalyst in the alkaline media, the CuO MCS exhibits an overpotential of 304 mV at 10 mA cm–2 and a stable delivery of the OER current for more than 15 h, which surpasses most of the Cu oxide OER electrocatalysts ever reported. Theoretical calculations indicate that high OER activity of CuO MCSs can be traced to the modified electronic structure caused by the O vacancies, resulting in much enhanced Cu 3d–O 2p covalency as well as lifted d-band center, which alters CuO MCSs into a half-metallic nature with optimized binding strength toward O-containing intermediates for OER. This work could provide valuable insights into the design of other MOF-derived advanced catalysts for OER and beyond.

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“…In the recent years, several non-TiO 2 -based photocatalysts were developed and tested in glycerol transformation to value-added gas and liquid products, such as CdS, − , ZnO, ,,,, ZnS, ,,, Zn 2 TiO 4 , La 0.2 Na 0.98 TaO 3 , − g-C 3 N 4 , − , CuO, Bi 2 WO 6 , ,, and Pt/La 0.02 Na 0.98 TaO 3 . − Among them, CdS (as an n-type semiconductor) is one of the most active photocatalysts under visible light, with a bandgap energy of 2.4 eV. Although the hexagonal structured CdS (wurtzite) exhibits high activity, its cubic structure’s activity is insufficient .…”

Section: Photocatalyst Development For Glycerol Valorizationmentioning

confidence: 99%

“…Other Photocatalysts. In the recent years, several non-TiO 2 -based photocatalysts were developed and tested in glycerol transformation to value-added gas and liquid products, such as CdS, [123][124][125][126]139 ZnO, 35,127,128,143,184 ZnS, 35,127,128,184 Zn 2 TiO 4 , 108 La 0.2 Na 0.98 TaO 3 , 129−132 g-C 3 N 4 , [120][121][122]145 CuO, 136 Bi 2 WO 6 , 41,42,133 and Pt/La 0.02 Na 0.98 TaO 3 . 129−132 Among them, CdS (as an n-type semiconductor) is one of the most active photocatalysts under visible light, with a bandgap energy of 2.4 eV.…”

Section: Photocatalyst Development For Glycerolmentioning

confidence: 99%

Current Developments and Future Trends in Photocatalytic Glycerol Valorization: Photocatalyst Development

Estahbanati

Feilizadeh

Attar

et al. 2020

Ind. Eng. Chem. Res.

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Glycerol is a significant byproduct of biomass conversion into biodiesel, and numerous studies have been focused on its valorization technologies in recent years. Photocatalytic glycerol valorization is a promising technology to convert solar energy into chemical energy by producing hydrogen and value-added liquid products. This technology is desirable from the point of view of both green chemistry and sustainable development since it can operate at ambient temperature and atmospheric pressure by using renewable solar energy. The key element for a successful photocatalytic glycerol valorization process is the development of highly active and stable photocatalysts. In this context, the present review deals with novel techniques to improve photocatalysts’ activity. It reviews the main characteristics, preparation methods, advantages, and drawbacks as well as the performance of different TiO2-based and non-TiO2-based photocatalysts for glycerol conversion. Also, an analysis is presented on the most effective approaches for increasing the photocatalytic activity, including cocatalyst deposition, doping with metallic and nonmetallic ions, development of carbonaceous composites, and formation of heterojunctions. The review also offers the readers ongoing challenges and opportunities for research on photocatalyst development to selectively convert glycerol into hydrogen and value-added liquid products.

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Pt-decorated CuO nanosheets and their application in the visible light photocatalytic water splitting reaction

Cited by 9 publications

References 31 publications

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Copper Oxide-Based Photocatalysts and Photocathodes: Fundamentals and Recent Advances

Engineering Oxygen Vacancies in Mesocrystalline CuO Nanosheets for Water Oxidation

Current Developments and Future Trends in Photocatalytic Glycerol Valorization: Photocatalyst Development

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