Hierarchically micro/nanostructured porous metallic copper: Convenient growth and superhydrophilic and catalytic performance

Gao, Shuyan; Jia, Xiaojun; Yang, Jianmao; Wei, Xianjun

doi:10.1039/c2jm35233h

Cited by 65 publications

(40 citation statements)

References 69 publications

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“…To determine the formation and crystalline structure of the [26,32] For Fe 3 O 4 /Cu, in addition to these peaks, an additional peak at 50.4°that corresponded to the (200) plane of metallic Cu [33,34] was clearly present, thus suggesting the formation of metallic Cu. The characteristic peaks of metal Cu at 43.3 and 74.1°overlapped that of Fe 3 O 4 .…”

Section: Structural Characterizationmentioning

confidence: 99%

One‐Step Green Synthesis of Multifunctional Fe₃O₄/Cu Nanocomposites toward Efficient Reduction of Organic Dyes

Wang

Zhai

et al. 2015

Eur J Inorg Chem

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Noble-metal-derived functional materials have played indispensable roles in the reduction of dye under aqueous conditions; however, their cost and separation are great limitations on their wider practical applications. Therefore, an alternative preparation of comparable materials with low cost and good ease of separation is required. Herein magnetic microspheres (i.e., Fe 3 O 4 /Cu) were synthesized through a green single-step solvothermal method for the first time with ethylene glycol serving as reductant and reaction media. The prepared materials were characterized by means of powder Xray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, energy-dispersive X-ray spectrometry, a vibrating sample mag-

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Section: Structural Characterizationmentioning

confidence: 99%

One‐Step Green Synthesis of Multifunctional Fe₃O₄/Cu Nanocomposites toward Efficient Reduction of Organic Dyes

Wang

Zhai

et al. 2015

Eur J Inorg Chem

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“…In a typical catalytic reaction, 50 ll of aqueous 4-NP (0.005 M), 0.0038 g NaBH 4 (0.0001, 0.010 mol%) powder and 3.05 ml ultrapure water were added in a quartz cuvette, followed by the addition of 0.06 mg of catalyst, and the mixture was quickly subjected to UV-vis measurements (Systronics UV-vis spectrophotometer, 2201). The color change of the solution from yellow to colorless could be clearly observed as the reaction proceeds [45]. The catalytic conversion of 4-NP to 4-aminophenol (4-AP) in presence of excess amount of NaBH 4 is shown as: …”

Section: Catalytic Testmentioning

confidence: 99%

Surfactant-assisted morphological tuning of porous metallic silver sponges: facile synthesis, characterization and catalytic performance

Sheikh

Naikoo

Thomas

et al. 2015

J Sol-Gel Sci Technol

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Nanoporous sponges have many advantages over bulk catalyst structures in terms of providing regular framework of pores and conformational stability. In this paper, precise tuning of porosity and surface morphology in silver sponges for the catalytic reduction of p-nitro phenol to p-amino phenol was explored. The silver spongy catalysts are reusable and stable. The porous catalysts were characterized before calcination by FTIR and TGA and after calcination by XRD, SEM and BET techniques. Catalytic performance of the silver sponges was confirmed by spectrophotometric technique, and it was concluded that the porosity and adsorption capability of silver sponges were responsible for their outstanding catalytic performance. Graphical AbstractThe calcined silver monoliths displayed a potential catalytic activity against the reduction of 4-nitrophenol which is a serious environmental pollutant to 4-aminophenol which is an important intermediate in the synthesis of various analgesic and antipyretic drugs. Fig. (a)-(e) Time-dependent successive UV-vis spectra showing the reduction of 4-nitrophenol catalyzed by 0.06 mg of different silver monolith catalysts (a) Ag/Triton X-100, (b) Ag/Triton X-100/dextran, (c) Ag/Triton X-100/ TMB, (d) Ag/Triton X-100/Ludox (HF treated). (e)

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“…Gao and co-workers reported a SHPL film with micro-/nanostructured porous copper microspheres (Figure 3g), and demonstrated higher catalytic performance than the commercial cupper powder. [107] Zhao and co-workers synthesized asymmetrical mesoporous carbon nano-hemispheres by an interface tension-induced shrinkage method (Figure 3h). [108] These mesoporous carbon nano-hemispheres show long-term dispersibility in water, which is a critical advantage in drug delivery and catalysis field.…”

Section: Slpl Interfaces In Zero Dimensionmentioning

confidence: 99%

Section: Slpl Interfaces In One Dimensionmentioning

confidence: 99%

Superlyophilic Interfaces and Their Applications

et al. 2017

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Superlyophilic interfaces denote interfaces displaying strong affinity to diverse liquids, including superhydrophilic, superoleophilic, and superamphiphilic interfaces. When coming in contact with these interfaces, water or oil droplets tend to spread completely with contact angles close to 0°, presenting versatile applications including self‐cleaning, antifogging, controllable liquid transport, liquid separation, and so forth. Inspired by nature, scientists have developed various kinds of artificial superlyophilic (SLPL) interfaces in the past decades. In terms of dimensional characteristics, the artificial SLPL interfaces can be divided into four categories: i) 0D particles, whose dispersibility or catalytic performance can be notably enhanced by superlyophilicity; ii) 1D micro‐/nanofibers or nanotubes/channels, which can efficiently transfer liquids with SLPL interfaces; iii) 2D flat SLPL interfaces, on which different functional molecules can be deposited uniformly, forming ultrathin and smooth films; and iv) 3D structures, which can be obtained by either constructing 0D, 1D, or 2D SLPL materials separately or directly fabricating random SLPL frameworks, and can always be used as functional coatings or bulk materials. Here, natural and artificial SLPL interfaces are briefly introduced, followed by a short discussion of the limit between lyophilicity and lyophobicity, and then a snapshot of methods to generate SLPL interfaces is given. Specific focus is placed on recent achievements of constructing SLPL interfaces from zero to three dimensions. Following that, broad applications of SLPL interfaces in commercial areas will be introduced. Finally, a short summary and outlook for future challenges in this field is presented.

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Hierarchically micro/nanostructured porous metallic copper: Convenient growth and superhydrophilic and catalytic performance

Cited by 65 publications

References 69 publications

One‐Step Green Synthesis of Multifunctional Fe₃O₄/Cu Nanocomposites toward Efficient Reduction of Organic Dyes

One‐Step Green Synthesis of Multifunctional Fe₃O₄/Cu Nanocomposites toward Efficient Reduction of Organic Dyes

Surfactant-assisted morphological tuning of porous metallic silver sponges: facile synthesis, characterization and catalytic performance

Superlyophilic Interfaces and Their Applications

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Hierarchically micro/nanostructured porous metallic copper: Convenient growth and superhydrophilic and catalytic performance

Cited by 65 publications

References 69 publications

One‐Step Green Synthesis of Multifunctional Fe3O4/Cu Nanocomposites toward Efficient Reduction of Organic Dyes

One‐Step Green Synthesis of Multifunctional Fe3O4/Cu Nanocomposites toward Efficient Reduction of Organic Dyes

Surfactant-assisted morphological tuning of porous metallic silver sponges: facile synthesis, characterization and catalytic performance

Superlyophilic Interfaces and Their Applications

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Product

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One‐Step Green Synthesis of Multifunctional Fe₃O₄/Cu Nanocomposites toward Efficient Reduction of Organic Dyes

One‐Step Green Synthesis of Multifunctional Fe₃O₄/Cu Nanocomposites toward Efficient Reduction of Organic Dyes