Controlled growth of ultrafine metal nanoparticles mediated by solid supports

Hu, Hongyin; Lu, Shuanglong; Li, Ting; Zhang, Yue; Guo, Chenxi; Zhu, Han; Zhang, Wei

doi:10.1039/d1na00025j

Cited by 19 publications

(11 citation statements)

References 173 publications

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“…In addition, proting from the structural regularity and site uniformity of PMMs, MNPs can be accurately represented via Xray diffraction, X-ray absorption and/or other spectrum technologies as the active centers of catalysis, which is helpful for the study of the catalytic mechanism. 29 3.1. Space-connement 3.1.1.…”

Section: Pmm-confinement Strategies To Synthesize Ultrafine Nanostructuresmentioning

confidence: 99%

“…[11][12][13][14][15][16][17][18][19][20][21][22][23] Thus, PMMs can be used as excellent carriers for conning and stabilizing MNPs. [24][25][26][27][28][29][30] Their connement effect of the nano/sub-nano-pores can not only effectively reduce the agglomeration problem of MNPs, but also can conne the growth of MNPs to obtain ultrane MNPs. 30 In addition, the connement metal-organic/organic space can modulate the electronic conguration of MNPs and the hostguest chemistry near the reactive sites, boosting their inherent activity and selectivity.…”

Section: Introductionmentioning

confidence: 99%

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Confinement synthesis in porous molecule-based materials: a new opportunity for ultrafine nanostructures

et al. 2022

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Section: Pmm-confinement Strategies To Synthesize Ultrafine Nanostructuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Confinement synthesis in porous molecule-based materials: a new opportunity for ultrafine nanostructures

et al. 2022

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“…In theory, the high metal content and small particle size lead to a large surface area. This situation can be achieved if the nanoparticles are evenly distributed and do not block the pores of the supporting material [36]. The large nanoparticle size also contributes to the increase in surface area, although not as much as the small nanoparticles.…”

Section: A C C E P T E Dmentioning

confidence: 99%

Performance of a Hybrid Catalyst from Amine Groups and Nickel Nanoparticles Immobilized on Lapindo Mud in Selective Production of Bio-hydrocarbons

Trisunaryanti

Azizah²,

Fatmawati³

et al. 2022

Indones. J. Chem.

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In the present work, optimum conditions for hydrocracking of waste palm cooking oil (WPCO) over a Ni-NH2/Lapindo mud catalyst were studied to obtain a high quantity and quality of biofuel. The utilized catalyst support material was Lapindo mud (LM) from Sidoarjo, Indonesia, which was only given physical treatment (i.e., washing, drying, grinding, and calcining). Ni/LM was prepared via wet impregnation in three different Ni weight loadings: 1, 5, and 10 wt.%, which were denoted as Ni(A)/LM, Ni(B)/LM, and Ni(C)/LM, respectively. As a result, the hydrocracking test of WPCO under the temperature of 470 °C and a feed/catalyst weight ratio of 50 showed that the Ni(A)/LM catalyst produced the highest liquid product reaching 46.65 wt.% among the other Ni-based catalysts. The liquid product can be increased drastically to 63.93 wt.% under a more optimum temperature at 550 °C. Functionalization of Ni(A)/LM as the best catalyst was carried out by grafting method with NH2 groups from 3-APTMS, resulting in Ni(A)-NH2/LM. This modification increased the liquid product to 68.17 wt.% under hydrocracking conditions using a weight ratio of 75. Moreover, the reusability of Ni(A)-NH2/LM was found to be effective for three hydrocracking runs, constantly yielding an average biofuel of 80 wt.%.

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“…Due to the great structure tunability and ease of functionalization, various functional groups can be incorporated into the backbone of COPs. As such, introducing nitrogen or sulfur rich moieties into COPs could act as coordination centers to bind with metal ions and guide the growth of metal‐based nanoparticles [13] …”

Section: Introductionmentioning

confidence: 99%

CoS₂ Nanoparticles Embedded in Covalent Organic Polymers as Efficient Electrocatalyst for Oxygen Evolution Reaction with Ultralow Overpotential

Liao

et al. 2021

Chemistry An Asian Journal

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Cobalt disulfide (CoS2) has been explored as attractive electrocatalyst for oxygen evolution reaction (OER). However, bulk CoS2 sheets have limited catalytic activity due to low exposure of active sites. Herein, through an in‐situ vulcanization approach, CoS2 nanoparticles are embedded into bipyridine‐containing covalent organic polymer (BP‐COP). The as‐prepared nanocomposite CoS2@BP‐COP exhibits high catalytic activity toward OER with an ultra‐low overpotential of 270 mV (vs. RHE) at a current density of 10 mA cm−2, a small Tafel slope of 36 mV dec−1, and an excellent durability for 24 h without decay. The surface of CoS2 is partially converted into CoOOH to form CoS2/CoOOH as active sites under OER conditions. CoS2@BP‐COP displays superior OER catalytic activity to CoS2 nanosheets and commercially available RuO2 under the same conditions. The outstanding OER performance activity of CoS2@BP‐COP could be attributed to the uniform and small particle sizes of CoS2/CoOOH distributed in BP‐COP.

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Controlled growth of ultrafine metal nanoparticles mediated by solid supports

Abstract: As a unique class of nanomaterials with high surface-area-to-volume ratio and narrow size distribution, ultrafine metal nanoparticles (UMNPs) have shown exciting properties in many applications, particularly in the field of...

Cited by 19 publications

References 173 publications

Confinement synthesis in porous molecule-based materials: a new opportunity for ultrafine nanostructures

Confinement synthesis in porous molecule-based materials: a new opportunity for ultrafine nanostructures

Performance of a Hybrid Catalyst from Amine Groups and Nickel Nanoparticles Immobilized on Lapindo Mud in Selective Production of Bio-hydrocarbons

CoS₂ Nanoparticles Embedded in Covalent Organic Polymers as Efficient Electrocatalyst for Oxygen Evolution Reaction with Ultralow Overpotential

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Controlled growth of ultrafine metal nanoparticles mediated by solid supports

Abstract: As a unique class of nanomaterials with high surface-area-to-volume ratio and narrow size distribution, ultrafine metal nanoparticles (UMNPs) have shown exciting properties in many applications, particularly in the field of...

Cited by 19 publications

References 173 publications

Confinement synthesis in porous molecule-based materials: a new opportunity for ultrafine nanostructures

Confinement synthesis in porous molecule-based materials: a new opportunity for ultrafine nanostructures

Performance of a Hybrid Catalyst from Amine Groups and Nickel Nanoparticles Immobilized on Lapindo Mud in Selective Production of Bio-hydrocarbons

CoS2 Nanoparticles Embedded in Covalent Organic Polymers as Efficient Electrocatalyst for Oxygen Evolution Reaction with Ultralow Overpotential

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Product

Resources

About

CoS₂ Nanoparticles Embedded in Covalent Organic Polymers as Efficient Electrocatalyst for Oxygen Evolution Reaction with Ultralow Overpotential