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Journal ArticleDOI

Flexible hierarchical Pd/SiO2-TiO2 nanofibrous catalytic membrane for complete and continuous reduction of p-nitrophenol

Zhiwei Pan1, Xinru Zhu1, Hong Jiang1, Yefei Liu1, Rizhi Chen1 
26 Mar 2021-Journal of Experimental Nanoscience (Taylor & Francis)-Vol. 16, Iss: 1, pp 63-81
TL;DR: Flexible and hierarchical nanostructured Pd/SiO2-TiO2 nanofibrous catalytic membranes were fabricated via combining electrospinning technique and a two-step hydrothermal method as mentioned in this paper.
Abstract: Flexible and hierarchical nanostructured Pd/SiO2-TiO2 nanofibrous catalytic membranes were fabricated via combining electrospinning technique and a two-step hydrothermal method The size and distri
Citations
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Journal ArticleDOI
Xinru Zhu1, Zhiwei Pan1, Hong Jiang1, Yan Du1, Rizhi Chen1 
TL;DR: In this paper, a series of hierarchical Pd/UiO-66-NH2-SiO2 nanofibrous catalytic membranes were fabricated, where SiO2 nanoparticles with micropores and mesopores were fabricated on the membrane, which provided more surface areas for loading Pd, thereby enhancing active sites.

11 citations

Journal ArticleDOI
TL;DR: In this article, a Co@CN/CM catalytic membrane was synthesized, where ZIF-67 was first grown on the surface and in the pores of a ceramic membrane (CM) and then pyrolyzed to produce Co@N-doped carbon (Co@CN).

7 citations

Journal ArticleDOI
0801
TL;DR: In this article , a novel [email protected]/CM catalytic membrane was synthesized, where ZIF-67 was first in-situ grown on the surface and in the pores of a ceramic membrane (CM) and then pyrolyzed to produce carbon ([email protected]).

6 citations

References
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Journal ArticleDOI
02 Jul 2009-Langmuir
TL;DR: This perspective reviews recent developments in the synthesis, electrochemistry, and optical properties of gold nanoparticles, with emphasis on papers initiating the developments and with an eye to their consequences.
Abstract: This perspective reviews recent developments in the synthesis, electrochemistry, and optical properties of gold nanoparticles, with emphasis on papers initiating the developments and with an eye to their consequences. Key aspects of Au nanoparticle synthesis have included the two-phase synthesis of thiolated nanoparticles, the sequestration and reduction of Au salts within dendrimers, the controlled growth of larger particles of well-defined shapes via the seeded approach, and the assembling of a variety of nanoparticle networks and nanostructures. The electrochemistry of thiolated Au nanoparticles is systemized as regions of bulk-continuum voltammetry, voltammetry reflective of quantized double-layer charging, and molecule-like voltammetry reflective of molecular energy gaps. These features are principally determined by the nanoparticle core. Interesting multielectron Au nanoparticle voltammetry is observed when the thiolate ligand shell has been decorated with redox groupings. Another development is that Au nanoparticles were discovered to exhibit unanticipated properties as heterogeneous catalysts, starting with the low-temperature oxidation of CO. Substantial progress has also been made in understanding the surface plasmon spectroscopy of Au nanoparticles and nanorods. The need to investigate the optical properties of metal particles of a single, well-defined shape and size has motivated the development of a number of new techniques, leading to the study of electron transfer and redox catalysis on single nanoparticles.

940 citations

Journal ArticleDOI
TL;DR: A novel magnetically recoverable Au nanocatalyst fabricated by the simple adsorption-reduction of Au(III) ions on chitosan-coated iron oxide magnetic nanocarrier exhibited excellent catalytic activity to the reduction of 4-nitrophenol (4-NP) with sodium borohydride.

480 citations

Journal ArticleDOI
TL;DR: In this article, the effects of temperature and nanoparticles concentration on the rheological behavior of Fe 3 O 4 -Ag/EG hybrid nanofluid have been experimentally investigated.

309 citations

Journal ArticleDOI
Jie Feng1, Li Su1, Yanhua Ma1, Cuiling Ren1, Qing Guo1, Xingguo Chen1 
TL;DR: In this paper, it was shown that CuFe2O4 magnetic nanoparticles (MNPs) possessed high catalytic performance in the reduction of nitrophenol for the first time.

280 citations

Journal ArticleDOI
TL;DR: In this paper, a carbon black supported nano-Ni catalyst was used for hydrogenation of nitrophenols even at 30 degrees C. The high performance obtained by the Ni-based catalyst can be attributed to the specific characteristics of the nanostructure of the catalyst and the synergistic effect of nanoNi and carbon black, including plenty of oxygen-containing groups of carbon black for anchoring Ni atoms.
Abstract: A carbon black (CB) supported nano-Ni catalyst is prepared by a facile method using nickel chloride as the nickel source and hydrazine hydrate as the reducing agent. TEM observation shows that Ni nanoparticles have a good dispersion with a narrow size distribution on the surface of carbon black. The catalyst exhibits significantly high catalytic activity for hydrogenation of nitrophenols even at 30 °C. The high performance obtained here can be attributed to the specific characteristics of the nanostructure of the catalyst and the synergistic effect of nano-Ni and carbon black, including plenty of oxygen-containing groups of carbon black for anchoring Ni atoms, strong adsorption ability for organic molecules and good conductivity for electron transfer from the carbon black to Ni nanoparticles. Moreover, the Ni-based catalyst is relatively cheap and magnetically separable, thus achieving a low-cost hydrogenation of nitrophenols to aminophenols.

225 citations

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