Toward the Green Production of H<sub>2</sub>: Binary Pt–Ru Promoted Nb-TiO<sub>2</sub> Based Photocatalysts

Caudillo-Flores, Uriel; Barba-Nieto, Irene; Gómez-Cerezo, María N.; Martı́nez-Arias, A.; Fernández-García, Marcos; Kubacka, Anna

doi:10.1021/acssuschemeng.9b03796

Cited by 18 publications

(6 citation statements)

References 89 publications

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“…Bimetallic co-catalysts presenting Pt as a major component find application in numerous photocatalytic processes. As an example, Pt-Pd [ 146 ] and Pt-Ru [ 147 ] co-catalysts supported on nonmetric (ca. 10 nm) anatase were tested in the photoproduction of hydrogen from methanol: water mixtures.…”

Section: Composite Photocatalystsmentioning

confidence: 99%

Sunlight-Operated TiO2-Based Photocatalysts

et al. 2020

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Photo-catalysis is a research field with broad applications in terms of potential technological applications related to energy production and managing, environmental protection, and chemical synthesis fields. A global goal, common to all of these fields, is to generate photo-catalytic materials able to use a renewable energy source such as the sun. As most active photocatalysts such as titanium oxides are essentially UV absorbers, they need to be upgraded in order to achieve the fruitful use of the whole solar spectrum, from UV to infrared wavelengths. A lot of different strategies have been pursued to reach this goal. Here, we selected representative examples of the most successful ones. We mainly highlighted doping and composite systems as those with higher potential in this quest. For each of these two approaches, we highlight the different possibilities explored in the literature. For doping of the main photocatalysts, we consider the use of metal and non-metals oriented to modify the band gap energy as well as to create specific localized electronic states. We also described selected cases of using up-conversion doping cations. For composite systems, we described the use of binary and ternary systems. In addition to a main photo-catalyst, these systems contain low band gap, up-conversion or plasmonic semiconductors, plasmonic and non-plasmonic metals and polymers.

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Section: Composite Photocatalystsmentioning

confidence: 99%

Sunlight-Operated TiO2-Based Photocatalysts

et al. 2020

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“…In order to advance photocatalyst applications and meet more functional requirements, modifications of TiO 2 forming a heterostructure are being investigated. Many research groups demonstrated the beneficial effects of the integration of noble metals in TiO 2 -based photocatalysts, such as Au, Ag, Pt and Pd [16][17][18][19][20][21]. Cheng et al [22] fabricated 3D Ag/ZnO bifunctional composite, acting as a SERS-active substrate and photocatalyst, to detect and degrade organic dye pollutant.…”

Section: Introductionmentioning

confidence: 99%

Silver@mesoporous Anatase TiO2 Core-Shell Nanoparticles and Their Application in Photocatalysis and SERS Sensing

et al. 2022

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Nanostructured noble metal-semiconductor materials have been attracting increasing attention because of their broad application in the field of environmental remediation, sensing and photocatalysis. In this study, a facile approach for fabricating silver@mesoporousanataseTiO2 (Ag@mTiO2) core-shell nanoparticles employing sol-gel and hydrothermal reaction is demonstrated. The Ag@mTiO2nanoparticles display excellent surface-enhanced Raman scattering (SERS) sensitivity and they can detect the methylene blue (MB) molecules with the concentration of as low as 10−8 M. They also exhibit outstanding photocatalytic activity compared with mTiO2, due to the efficient separation and recombination restrain of electron–hole pairs under ultraviolet light. The Ag@mTiO2nanoparticles also present good stability and they can achieve recyclable photocatalytic degradation experiments for five times without loss of activity. Subsequently, the nanoparticles with dual functions were successfully used to in situ monitor the photodegradation process of MB aqueous solution. These results, demonstrating the multifunctional Ag@mTiO2 nanoparticles, hold promising applications for simultaneous SERS analysis and the removal of dye pollutants in environmental field.

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“…However, the rapid recombination of photogenerated electrons and hole pairs in CdS photocatalysts and the high kinetics of surface hydrogen production severely limit their photocatalytic properties 8 . It has been reported that the use of noble metals such as Pt, 9,10 Au 11,12 as a co‐catalyst to modify semiconductor catalysts can reduce the recombination of photogenerated electron–hole pairs and accelerate the hydrogen evolution reaction. However, these noble metal are expensive and not suitable for large‐scale commercial applications.…”

Section: Introductionmentioning

confidence: 99%

Electric‐assisted strategy enhances the photocatalytic performance of mixed‐dimensional CdS/MoS₂ photocatalysts

Qiao

Huang

et al. 2021

J Am Ceram Soc.

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As an effective semiconductor catalyst, cadmium sulfide (CdS) is used in the field of split water hydrogen evolution because of its suitable band gap (~2.4 eV), good photocatalysis activity. However, the rapid recombination of photogenerated electron–hole pairs limits the application of CdS in the field of catalytic hydrogen evolution. Here, we synthesize a CdS/MoS2 mixed‐dimensional heterojunction by a simple hydrothermal method. In this process, CdS nanoparticles were supported on MoS2 nanosheets, where MoS2 acts as a loading platform and co‐catalyst to improve the photocatalytic performance of CdS. A series of characterizations confirmed that CdS nanoparticles with a size of approximately 130 nm were uniformly grown on the surface of MoS2 nanosheets. Photoelectrochemical (PEC) tests show that this CdS/MoS2 mixed‐dimensional heterojunction has enhanced photocatalysis hydrogen evolution activity, which is due to the CdS/MoS2 mixed‐dimensional heterojunction can promote the separation of photogenerated electron–hole pairs and positive synergy of MoS2 nanosheets as a co‐catalyst. In addition, a new electrically assisted method is used to enhance the photocatalytic activity, and the photocatalytic performance of the CdS/MoS2 mixed‐dimensional heterojunction is improved by nearly four times when a voltage of 0.6 V is applied. This phenomenon is attributed to the fact that providing an appropriate voltage can further promote the separation of photogenerated electron–hole pairs and rapid carrier mobility, thereby effectively improve the photocatalytic activity of the photocatalyst. This work provides a good guiding significance for the design and construction of high‐performance hydrogen evolution catalysts.

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Toward the Green Production of H₂: Binary Pt–Ru Promoted Nb-TiO₂ Based Photocatalysts

Cited by 18 publications

References 89 publications

Sunlight-Operated TiO2-Based Photocatalysts

Sunlight-Operated TiO2-Based Photocatalysts

Silver@mesoporous Anatase TiO2 Core-Shell Nanoparticles and Their Application in Photocatalysis and SERS Sensing

Electric‐assisted strategy enhances the photocatalytic performance of mixed‐dimensional CdS/MoS₂ photocatalysts

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Toward the Green Production of H2: Binary Pt–Ru Promoted Nb-TiO2 Based Photocatalysts

Cited by 18 publications

References 89 publications

Sunlight-Operated TiO2-Based Photocatalysts

Sunlight-Operated TiO2-Based Photocatalysts

Silver@mesoporous Anatase TiO2 Core-Shell Nanoparticles and Their Application in Photocatalysis and SERS Sensing

Electric‐assisted strategy enhances the photocatalytic performance of mixed‐dimensional CdS/MoS2 photocatalysts

Contact Info

Product

Resources

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Toward the Green Production of H₂: Binary Pt–Ru Promoted Nb-TiO₂ Based Photocatalysts

Electric‐assisted strategy enhances the photocatalytic performance of mixed‐dimensional CdS/MoS₂ photocatalysts