Ru nanoparticles supported on partially reduced TiO2 as highly efficient catalyst for hydrogen evolution

Chen, Lina; Wang, Suheng; Zhang, Peng-Yang; Chen, Zhuo; Lin, Xingyi; Yang, Huijuan; Sheng, Tian; Lin, Wen‐Feng; Tian, Na; Sun, Shi‐Gang; Zhou, Zhi‐You

doi:10.1016/j.nanoen.2021.106211

Cited by 56 publications

(45 citation statements)

References 60 publications

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“…The atomic percentage of element of Ti in TiO 2 -Pt/C is about 9 atom %, while that of Ni, Ce, and W in their MO x -Pt/C catalysts is as low as 1.4 atom %, 1.0 atom %, and 2.0 atom %, respectively. The X-ray photoelectron spectroscopy (XPS) of MO x -Pt/C catalysts and Pt/C (Figure c–d and Figure S12) reveals that the binding energy (BE) of Pt 4f electrons in TiO 2 -Pt/C slightly downshifts 0.2 eV to low energy relative to that in Pt/C, implying that there is electron transfer from TiO 2 to Pt due to the electronic interaction between TiO 2 and Pt. , Similar downshifting of the BE in Pt 4f also exists in other MO x -Pt/C catalysts as shown in Figure S12. However, we cannot ascribe the HER improvement only to such a small change in the electronic configuration of Pt after the metal oxides decoration.…”

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confidence: 72%

Interfacial Water Enrichment and Reorientation on Pt/C Catalysts Induced by Metal Oxides Participation for Boosting the Hydrogen Evolution Reaction

Deng

Jiang

et al. 2022

J. Phys. Chem. Lett.

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State-of-the-art hydrogen evolution reaction (HER) catalysts have been Ptor Pt-based alloys so far due to their extremely low onset potential; however, their HER kinetics become worse under strong cathodic polarization. Herein, we take commercial Pt/ C decorated with a small amount of metal oxides (MO x -Pt/C) as model catalysts to improve the HER kinetics at a wide cathodic potential range in alkaline conditions. The MO x -Pt/C catalysts markedly reduce the Tafel slope and overpotential under both small and large cathodic polarization. Multiscale simulations reveal that the metal oxides can cause a so-called local electric field enhancement and induce interfacial water enrichment and reorientation. It accelerates the diffusion of hydrated K + and facilitates the activation of interfacial water, which boosts the Volmer step to match the fast H 2 evolution especially under strong potential polarization. Our work discloses important clues about how multiple components play a role in HER electrocatalysis.

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mentioning

confidence: 72%

Interfacial Water Enrichment and Reorientation on Pt/C Catalysts Induced by Metal Oxides Participation for Boosting the Hydrogen Evolution Reaction

Deng

Jiang

et al. 2022

J. Phys. Chem. Lett.

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“…Interface effect refers to the interface between two types of active materials due to strong bonding, electronic interaction or synergistic effect, which can form more active centers than individual components. [ 250 , 251 , 252 , 253 , 254 , 255 , 256 , 257 , 258 , 259 , 260 , 261 , 262 , 263 , 264 , 265 , 266 , 267 , 268 , 269 ] The complex electronic structures of interfacial electrocatalysts make the fundamental investigations of structure‐activity relationships still remain as a great challenge. Nevertheless, this complexity also introduces various structural features that can be adjusted advantageously.…”

Section: Strategies To Improve Her Electrocatalystsmentioning

confidence: 99%

Rational Design of Better Hydrogen Evolution Electrocatalysts for Water Splitting: A Review

et al. 2022

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The excessive dependence on fossil fuels contributes to the majority of CO2 emissions, influencing on the climate change. One promising alternative to fossil fuels is green hydrogen, which can be produced through water electrolysis from renewable electricity. However, the variety and complexity of hydrogen evolution electrocatalysts currently studied increases the difficulty in the integration of catalytic theory, catalyst design and preparation, and characterization methods. Herein, this review first highlights design principles for hydrogen evolution reaction (HER) electrocatalysts, presenting the thermodynamics, kinetics, and related electronic and structural descriptors for HER. Second, the reasonable design, preparation, mechanistic understanding, and performance enhancement of electrocatalysts are deeply discussed based on intrinsic and extrinsic effects. Third, recent advancements in the electrocatalytic water splitting technology are further discussed briefly. Finally, the challenges and perspectives of the development of highly efficient hydrogen evolution electrocatalysts for water splitting are proposed.

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“…Similarly, numerous researchers made innovations in making novel catalysts to enhance the electrocatalytic processes and some of these novel catalysts recently reported are listed in Table 5 . Another novel catalyst using reduced titanium dioxide-supported ruthenium nanocatalyst was developed with more oxygen vacancies for hydrogen evolution (Chen et al 2021b ). This nanocatalyst required very less overpotential (15 mV) to deliver the current density of 10 mA cm −2 under alkaline conditions.…”

Section: Applications Of Titanium Dioxidementioning

confidence: 99%

Synthesis and application of titanium dioxide photocatalysis for energy, decontamination and viral disinfection: a review

Nachiappan²,

et al. 2022

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Global pollution is calling for advanced methods to remove contaminants from water and wastewater, such as TiO 2 -assisted photocatalysis. The environmental applications of titanium dioxide have started after the initial TiO 2 application for water splitting by Fujishima and Honda in 1972. TiO 2 is now used for self-cleaning surfaces, air and water purification systems, microbial inactivation and selective organic conversion. The synthesis of titanium dioxide nanomaterials with high photocatalytic activity is actually a major challenge. Here we review titanium dioxide photocatalysis with focus on mechanims, synthesis, and applications. Synthetic methods include sol-gel, sonochemical, microwave, oxidation, deposition, hydro/solvothermal, and biological techniques. Applications comprise the production of energy, petroleum recovery, and the removal of microplastics, pharmaceuticals, metals, dyes, pesticides, and of viruses such as the severe acute respiratory syndrome coronavirus 2.

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Ru nanoparticles supported on partially reduced TiO2 as highly efficient catalyst for hydrogen evolution

Cited by 56 publications

References 60 publications

Interfacial Water Enrichment and Reorientation on Pt/C Catalysts Induced by Metal Oxides Participation for Boosting the Hydrogen Evolution Reaction

Interfacial Water Enrichment and Reorientation on Pt/C Catalysts Induced by Metal Oxides Participation for Boosting the Hydrogen Evolution Reaction

Rational Design of Better Hydrogen Evolution Electrocatalysts for Water Splitting: A Review

Synthesis and application of titanium dioxide photocatalysis for energy, decontamination and viral disinfection: a review

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