State-of-the-art advancements of transition metal oxides as photoelectrode materials for solar water splitting

Ke, Gaili; Jia, Baohua; He, Huichao; Zhou, Yong; Zhou, Ming

doi:10.1007/s12598-022-01968-5

Cited by 31 publications

(11 citation statements)

References 151 publications

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“…[1][2][3][4] Hydrogen, a zero-emission fuel that yields only water on combustion, has a high mass-specific energy density of 142 MJ kg −1 and is hence considered as an ideal alternative to fossil fuels. [5][6][7][8] On the other hand, water is an abundantly available resource on the Earth and electrochemical water splitting powered by renewable green energy sources such as solar and wind or hydroelectricity can be a highly promising route to obtain green hydrogen. [9][10][11][12] However, in contrast to the cathodic HER (hydrogen evolution reaction), the other half-cell reaction at the anodic side for the OER (oxygen evolution reaction) requires comparatively higher overpotentials in water electrolysis to surmount the energy barrier and is also kinetically sluggish owing to the multiple electron transfer involved in the reaction.…”

Section: Introductionmentioning

confidence: 99%

Accelerating glucose electrolysis on Cu-doped MIL-88B for an energy efficient anodic reaction in water splitting

Shrestha,

Patil,

Salunke

et al. 2023

Dalton Trans.

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Section: Introductionmentioning

confidence: 99%

Accelerating glucose electrolysis on Cu-doped MIL-88B for an energy efficient anodic reaction in water splitting

Shrestha,

Patil,

Salunke

et al. 2023

Dalton Trans.

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“…24 Nevertheless, their scarcity and high cost limit their real practical application. Although other alternatives to noble metals (e.g., transition-metal oxides, 25 sulfides, 26 and phosphides 27 ) have been proposed, they present a lower photocatalytic efficiency. Furthermore, MOFs are rich in topology, composition, and highly dense in active sites.…”

Section: ■ Introductionmentioning

confidence: 99%

Two Cu-Based Phosphonate Metal–Organic Frameworks as Efficient Water-Splitting Photocatalysts

Salcedo-Abraira,

Serrano-Nieto,

Biglione

et al. 2023

Chem. Mater.

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Two novel three-dimensional metal–organic frameworks (MOFs) based on the photoactive pyrene tetraphosphonate ligand and copper (denoted as IEF-8 and IEF-9) have been hydrothermally synthesized and fully characterized (XRD, FTIR, TGA, SEM, XPS, etc.). Their crystal structures were unveiled by single-crystal X-ray diffraction. Remarkably, these materials exhibit coordinatively unsaturated copper (II) sites, free −PO3H2 and −PO3H acidic groups, and good thermal and chemical stability. Further, their optoelectronic characterization evidenced a photoresponse suitable for photocatalysis. In this sense, the photocatalytic activity of pyrene phosphonate MOFs was evaluated for the first time for the challenging hydrogen evolution reaction. In particular, IEF-8 exhibited a catalytic efficiency higher than that of the benchmarked Ti carboxylate photocatalyst MIL-125(Ti)–NH2, producing 1800 μmol·g–1 after 22 h under UV–vis irradiation in the absence of any co-catalyst. Furthermore, this material presented good reusability (at least up to 4 cycles), preserving its activity and structural integrity.

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“…Hydrogen energy has become one of the most promising clean energy sources due to the abundance of hydrogen on earth and the huge pollution-free calorific value of hydrogen combustion. Photoelectrochemical (PEC) water splitting for hydrogen evolution has been widely concerning because of its potential utilization of solar energy. , However, compared to the hydrogen evolution reaction on the photocathode, the kinetics of the oxygen evolution reaction (OER) on the photoanode is very slow and the photoanode corrosion is serious, which severely limits the efficiency of PEC water splitting. , Therefore, it is urgent to develop efficient and stable photoanode materials.…”

Section: Introductionmentioning

confidence: 99%

Mg-Doped Hematite Nanoparticle Arrays Coated with CoPi Thin Films for Solar Water Oxidation

Yuan

Deng

et al. 2023

ACS Appl. Nano Mater.

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As a promising candidate for photoelectrochemical water decomposition, α-Fe 2 O 3 has been plagued by low actual quantum efficiency and weak stability. In this work, we prepared an α-Fe 2 O 3 photoanode with Mg doping and cobalt-hydroxylphosphate (CoPi) coating. Compared to α-Fe 2 O 3 , the CoPi/Mg−Fe 2 O 3 photoanode exhibited remarkably enhanced activity of photoelectrochemical water splitting. The photocurrent density of the CoPi/Mg−Fe 2 O 3 photoanode was 1.30 mA cm −2 at 1.23 V vs RHE, which was around 3.51 times higher than that of α-Fe 2 O 3 (0.39 mA cm −2 ). In addition, the CoPi/Mg−Fe 2 O 3 photoanode demonstrated good stability, and the photocurrent density produced by the CoPi/Mg−Fe 2 O 3 photoanode did not decrease significantly after 24 h of light irradiation. The efficiencies of bulk charge separation and surface charge injection of the CoPi/Mg− Fe 2 O 3 photoanode were greatly increased through Mg doping and CoPi coating, which significantly improved its performances of photochemical water splitting.

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State-of-the-art advancements of transition metal oxides as photoelectrode materials for solar water splitting

Cited by 31 publications

References 151 publications

Accelerating glucose electrolysis on Cu-doped MIL-88B for an energy efficient anodic reaction in water splitting

Accelerating glucose electrolysis on Cu-doped MIL-88B for an energy efficient anodic reaction in water splitting

Two Cu-Based Phosphonate Metal–Organic Frameworks as Efficient Water-Splitting Photocatalysts

Mg-Doped Hematite Nanoparticle Arrays Coated with CoPi Thin Films for Solar Water Oxidation

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