Crystalline Lattice‐Confined Atomic Pt in Metal Carbides to Match Electronic Structures and Hydrogen Evolution Behaviors of Platinum (Adv. Mater. 41/2022)

Ma, Tian; Cao, Hao; Li, Shuang; Cao, Sujiao; Zhao, Zhenyang; Wu, Zihe; Yan, Rui; Yang, Chengdong; Wang, Yi; Aken, Peter A. van; Qiu, Li; Wang, Yang‐Gang; Cheng, Chong

doi:10.1002/adma.202270284

Cited by 34 publications

(44 citation statements)

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“…Ru@Ti 3 C 2 T x ‐V C displays superior HER catalytic activity to most of the state‐of‐the‐art MXene supported noble metal catalysts, which highlights the advantages of cation vacancy cluster decorated MXene and the induced ultra‐strong MSI for HER enhancement. Moreover, even involving the most recently reported noble metal catalysts employing diverse supports (carbons, [ 20a,39 ] oxides, [ 40 ] hydroxides, [ 41 ] and carbide [ 42 ] ) for comparison, the HER activity of Ru@Ti 3 C 2 T x ‐V C is still at the top level (Table S4, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Cation Vacancy Clusters in Ti₃C₂T_x MXene Induce Ultra‐Strong Interaction with Noble Metal Clusters for Efficient Electrocatalytic Hydrogen Evolution

Wang

Ding

Song

et al. 2023

Advanced Energy Materials

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MXenes are promising substrates for supported noble metal electrocatalysts. Yet, it is a significant challenge to modulate the metal-support interaction (MSI) for enhancing catalytic performance. Herein, employing a facile HF etching method, the cation vacancy structures in Ti 3 C 2 T x MXenes are controllably tuned, producing nearly vacancy-free (Ti 3 C 2 T x -V 0 ), single Ti atom vacancy (Ti 3 C 2 T x -V S ), or Ti vacancy cluster (Ti 3 C 2 T x -V C ) engineered MXenes. Ruthenium atomic clusters, as a model catalyst, successfully anchor on all MXene substrates. Different from the terminal -O/-F coordination groups on routine Ti 3 C 2 T x MXene surfaces, the Ti vacancy clusters in Ti 3 C 2 T x -V C create unique lattice carbon ligand environment toward Ru species, which induces ultra-strong MSI. As a result, compared to Ti 3 C 2 T x -V 0 and Ti 3 C 2 T x -V S , the Ti 3 C 2 T x -V C modulated Ru clusters (Ru@Ti 3 C 2 T x -V C ) exhibit the optimized balance of H 2 O adsorption/dissociation and OH/H desorption, thereby delivering superior electrocatalytic performance in the alkaline hydrogen evolution reaction (HER). Within the wide range from laboratory-level (90 mA cm −2 ) to industrial-level (1.5 A cm −2 ) current density, Ru@Ti 3 C 2 T x -V C outperforms commercial Pt/C in terms of overpotential and mass activity. Moreover, as a universal substrate for noble metal catalysts, Ti 3 C 2 T x -V C can also anchor Ir/Pt/Rh atomic clusters and enable excellent HER catalytic activity. This work expands the scope of the MSI between MXene and noble metal catalysts.

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Section: Resultsmentioning

confidence: 99%

Cation Vacancy Clusters in Ti₃C₂T_x MXene Induce Ultra‐Strong Interaction with Noble Metal Clusters for Efficient Electrocatalytic Hydrogen Evolution

Wang

Ding

Song

et al. 2023

Advanced Energy Materials

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“…It proves that the TiO 2 stabilized the Ru oxide during the reaction process. Similarly, Cheng and co‐authors demonstrate that the metal carbides (WC and MoC) also could enhance the utilization efficiency of Pt species [45] . Owing to its abundance and good physiochemical properties, TiO 2 has been widely investigated as a substrate for the deposition of noble metals to optimize the catalytic properties [46–48] .…”

Section: Introductionmentioning

confidence: 99%

Microwave Synthesis of Pt Clusters on Black TiO₂ with Abundant Oxygen Vacancies for Efficient Acidic Electrocatalytic Hydrogen Evolution

Yang

et al. 2023

Angewandte Chemie

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Oxygen vacancies‐enriched black TiO2 is one promising support for enhancing hydrogen evolution reaction (HER). Herein, oxygen vacancies enriched black TiO2 supported sub‐nanometer Pt clusters (Pt/TiO2‐OV) with metal support interactions is designed through solvent‐free microwave and following low‐temperature electroless approach for the first time. High‐temperature and strong reductants are not required and then can avoid the aggregation of decorated Pt species. Experimental and theoretical calculation verify that the created oxygen vacancies and Pt clusters exhibit synergistic effects for optimizing the reaction kinetics. Based on it, Pt/TiO2‐OV presents remarkable electrocatalytic performance with 18 mV to achieve 10 mA cm−2 coupled with small Tafel slope of 12 mV dec−1. This work provides quick synthetic strategy for preparing black titanium dioxide based nanomaterials.

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“…One efficient way to reduce the usage of noble metals is constructing single‐atom catalytic sites, where the noble metal atoms are atomically anchored on supports with maximized atomic utilization. [ 5,13–15 ] For instance, Dou et al. synthesized carbon supported Ir single atom catalysts (SACs) with the Ir mass content of 2.2 wt% for HER catalysis, where the Ir 1 @Co/NC catalyst was found to exhibit a low overpotential of 60 mV at a current density of 10 mA cm −2 (in 1.0 m KOH) comparable to the commercial Pt/C investigated.…”

Section: Introductionmentioning

confidence: 99%

Metal‐oxo Cluster Mediated Atomic Rh with High Accessibility for Efficient Hydrogen Evolution

Dong

Zhao

et al. 2023

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Achieving single‐atom catalysts (SACs) with high metal content and outstanding performance as well as robust stability is critically needed for clean and sustainable energy. However, most of the synthesized SACs are undesired on the loading content of the metal due to the anchored metals and the supports as well as the synthesizing methods. Herein, a Rh‐SAC with high accessibility by loading it on the metal nodes of metal‐porphyrin‐based PCN MOFs (PCN‐224) as supporting material is reported. Significantly, the PCN‐Rh15.9/KB catalyst with a high Rh content of 15.9 wt% exhibits excellent hydrogen evolution activity with a low overpotential of 25 mV at a current density of 10 mA cm−2 and a mass activity of 7.7 A mg−1Rh at overpotential of 150 mV, which is much better than that of the commercial Rh/C. Various characterizations reveal the Rh species is stabilized by the metal nodes bearing −O/OHx in MOFs, which is of importance for the high loading amount and the good activity. This work establishes an efficient approach to synthesize high content SACs on the nodes of MOFs for wide catalyst design.

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Crystalline Lattice‐Confined Atomic Pt in Metal Carbides to Match Electronic Structures and Hydrogen Evolution Behaviors of Platinum (Adv. Mater. 41/2022)

Cited by 34 publications

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Cation Vacancy Clusters in Ti₃C₂T_x MXene Induce Ultra‐Strong Interaction with Noble Metal Clusters for Efficient Electrocatalytic Hydrogen Evolution

Cation Vacancy Clusters in Ti₃C₂T_x MXene Induce Ultra‐Strong Interaction with Noble Metal Clusters for Efficient Electrocatalytic Hydrogen Evolution

Microwave Synthesis of Pt Clusters on Black TiO₂ with Abundant Oxygen Vacancies for Efficient Acidic Electrocatalytic Hydrogen Evolution

Metal‐oxo Cluster Mediated Atomic Rh with High Accessibility for Efficient Hydrogen Evolution

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Crystalline Lattice‐Confined Atomic Pt in Metal Carbides to Match Electronic Structures and Hydrogen Evolution Behaviors of Platinum (Adv. Mater. 41/2022)

Cited by 34 publications

References 0 publications

Cation Vacancy Clusters in Ti3C2Tx MXene Induce Ultra‐Strong Interaction with Noble Metal Clusters for Efficient Electrocatalytic Hydrogen Evolution

Cation Vacancy Clusters in Ti3C2Tx MXene Induce Ultra‐Strong Interaction with Noble Metal Clusters for Efficient Electrocatalytic Hydrogen Evolution

Microwave Synthesis of Pt Clusters on Black TiO2 with Abundant Oxygen Vacancies for Efficient Acidic Electrocatalytic Hydrogen Evolution

Metal‐oxo Cluster Mediated Atomic Rh with High Accessibility for Efficient Hydrogen Evolution

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Cation Vacancy Clusters in Ti₃C₂T_x MXene Induce Ultra‐Strong Interaction with Noble Metal Clusters for Efficient Electrocatalytic Hydrogen Evolution

Cation Vacancy Clusters in Ti₃C₂T_x MXene Induce Ultra‐Strong Interaction with Noble Metal Clusters for Efficient Electrocatalytic Hydrogen Evolution

Microwave Synthesis of Pt Clusters on Black TiO₂ with Abundant Oxygen Vacancies for Efficient Acidic Electrocatalytic Hydrogen Evolution