Ultrasonic-assisted synthesis of two dimensional coral-like Pd nanosheets supported on reduced graphene oxide for enhanced electrocatalytic performance

Cui, Zhe; Bai, Xuefeng

doi:10.1016/j.ultsonch.2020.105309

Cited by 24 publications

(10 citation statements)

References 77 publications

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“…The oxidation-state Pd accounted for 34.2 % from the peak area, means the electrons of some Pd atoms are transferred to the O element. [18] This changes the arrangement of electron clouds in TiO 2 crystals, resulting in the deviation of binding energy for O and Ti. Therefore, the results demonstrate that the strong interaction between Pd and TiO 2 is established, which can promote the uniform dispersion of Pd and the formation of small NPs.…”

Section: Resultsmentioning

confidence: 99%

High Efficiency Photocatalyst with Ultra‐Fine Pd NPs Constructed at Room Temperature for CO₂ Reduction

Pang

Fan

2023

ChemistrySelect

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The photocatalytic CO2 converted into the value‐added products is regarded as a green strategy for the conversion and utilization of energy. Herein, we develop a commodious SEA (strong electrostatic adsorption) strategy to synthesize Pd‐based photocatalysts with ultra‐fine Pd NPs (Pd/TiO2−S−B). As verified by experiments and characterizations, the ultra‐fine Pd NPs can inexorably heighten the reaction activity of catalyst, because it can provide several functions consist of improving the carrier separation efficiency, light absorption and CO2 molecules adsorption. Meanwhile, the interaction of Pd and substrate can prevent the agglomeration of Pd NPs in reaction process. The designed Pd/TiO2−S−B contributes excellent performance in a gas‐solid system. The yields of CO (105.1 μmol/g‐cat) and CH4 (254.3 μmol/g‐cat) detected, are about 5.25 and 6.24‐fold higher than those of pristine TiO2. Pd/TiO2−S−B also exhibits the forceful stability with acceptable decline of catalytic activity after three cycles. This opens the door for the preparation of high‐performance and steady photocatalysts by reliable and effortless strategies toward CO2 reduction.

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Section: Resultsmentioning

confidence: 99%

High Efficiency Photocatalyst with Ultra‐Fine Pd NPs Constructed at Room Temperature for CO₂ Reduction

Pang

Fan

2023

ChemistrySelect

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“…Templates normally have two key functions for anisotropic growth: (1) they possess specific active sites that can interact with metal precursors or reduced intermediates and (2) the structure of these templates can accommodate metal precursors or spatially confine the growth of metal materials in certain direction. Popular materials serving as 2D templates or substrates include lamellar micelles, ,,,,,− various 2D carbon materials such as graphite, ,, GO, − and graphene, , biomolecules, ,− ionic liquids, − polymers, ,− and metals. ,− Templated 2D nanostructures can also form at liquid–liquid − and solid–liquid interfaces.…”

Section: Theories and Understandings Of Shape Control Of 2d Metal Nan...mentioning

confidence: 99%

“…In a typical synthesis, the self-assembled micelles form first to provide the layered structures for the subsequent deposition of metal precursors. The formation of such assemblies is driven either by the hydrophilic and hydrophobic end groups of the surfactant itself or by a mixture of several surfactants to form a complex structure. , The functional groups in the lamellar micelles may serve as reductants in the 2D metal growth, while annealing may be necessary to facilitate the formation of large 2D metal structures from separated clusters and to remove the template . Besides the adjustable template composition and coordinated environment, another advantage of a soft template is its structural flexibility, which helps the growth of 2D metal nanomaterials with atomically smooth surfaces.…”

Section: Theories and Understandings Of Shape Control Of 2d Metal Nan...mentioning

confidence: 99%

Two-Dimensional Metal Nanostructures: From Theoretical Understanding to Experiment

Zhang

Yang

2023

Chem. Rev.

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This paper reviews recent studies on the preparation of two-dimensional (2D) metal nanostructures, particularly nanosheets. As metal often exists in the high-symmetry crystal phase, such as face centered cubic structures, reducing the symmetry is often needed for the formation of low-dimensional nanostructures. Recent advances in characterization and theory allow for a deeper understanding of the formation of 2D nanostructures. This Review firstly describes the relevant theoretical framework to help the experimentalists understand chemical driving forces for the synthesis of 2D metal nanostructures, followed by examples on the shape control of different metals. Recent applications of 2D metal nanostructures, including catalysis, bioimaging, plasmonics, and sensing, are discussed. We end the Review with a summary and outlook of the challenges and opportunities in the design, synthesis, and application of 2D metal nanostructures.

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“…Through the comparison, it can be found that the intensity of the peaks for the system containing CTAB, Cu(acac) 2 and Pd(acac) 2 are stronger than that of the others, revealing the interaction between CTAB and the metal precursors, which might influence the reaction rates and result in the simultaneous reduction of these agents. [34] Besides, the synthesis of regular and uniform nanosheets is influenced by the addition of benzoic acid. When there is no benzoic acid, nanoparticles are formed as exhibited in Figure S7a.…”

Section: Chemistry-a European Journalmentioning

confidence: 99%

High‐Efficient Ultrathin PdCuMo Porous Nanosheets with Abundant Defects for Oxygen Reduction Reaction

Fan

Yang

et al. 2022

Chemistry A European J

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To reduce the over-dependence on Pt, Pd-based catalysts have become one of the most effective candidates for oxygen reduction reaction (ORR). In order to further accelerate the ORR kinetics and strengthen the catalytic performance of Pd catalysts, component optimization and morphology design have been adopted. Although great progress has been made, it is still difficult to obtain porous ultrathin nanosheets with excellent performance by a simple method. Here, ultrathin PdCuMo porous nanosheets (PdCuMo NSs) were successfully prepared. This structure possessed a large specific surface area with rich cavities and structural defects, significantly enhancing its ORR performance. In special, the mass activity of PdCuMo NSs was 1.46 A mg À 1 at 0.90 V, which was 12.2, 8.6, and 2.7 times as high as that of Pd/C, Pt/C, and PdCuMo nanoparticles (PdCuMo NPs), respectively. In addition, it had an excellent ability to resist CO poisoning and exhibited remarkable long-term stability.

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Ultrasonic-assisted synthesis of two dimensional coral-like Pd nanosheets supported on reduced graphene oxide for enhanced electrocatalytic performance

Cited by 24 publications

References 77 publications

High Efficiency Photocatalyst with Ultra‐Fine Pd NPs Constructed at Room Temperature for CO₂ Reduction

High Efficiency Photocatalyst with Ultra‐Fine Pd NPs Constructed at Room Temperature for CO₂ Reduction

Two-Dimensional Metal Nanostructures: From Theoretical Understanding to Experiment

High‐Efficient Ultrathin PdCuMo Porous Nanosheets with Abundant Defects for Oxygen Reduction Reaction

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Ultrasonic-assisted synthesis of two dimensional coral-like Pd nanosheets supported on reduced graphene oxide for enhanced electrocatalytic performance

Cited by 24 publications

References 77 publications

High Efficiency Photocatalyst with Ultra‐Fine Pd NPs Constructed at Room Temperature for CO2 Reduction

High Efficiency Photocatalyst with Ultra‐Fine Pd NPs Constructed at Room Temperature for CO2 Reduction

Two-Dimensional Metal Nanostructures: From Theoretical Understanding to Experiment

High‐Efficient Ultrathin PdCuMo Porous Nanosheets with Abundant Defects for Oxygen Reduction Reaction

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Product

Resources

About

High Efficiency Photocatalyst with Ultra‐Fine Pd NPs Constructed at Room Temperature for CO₂ Reduction

High Efficiency Photocatalyst with Ultra‐Fine Pd NPs Constructed at Room Temperature for CO₂ Reduction