Microwave Synthesis of Highly Aligned Ultra Narrow Semiconductor Rods and Wires

Panda, Asit Baran; Glaspell, Garry; El‐Shall, M. Samy

doi:10.1021/ja058148b

Cited by 294 publications

(182 citation statements)

References 23 publications

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“…177,178 High-quality semiconductor nanowires and nanorods made from metal sulfides or selenides can be made in large batches in under 3 min using microwave irradiation. 179 Complex semiconductor materials such as InGaP, InP, and CdSe can be rapidly made in scalable, industrial batch quantities using microwave heating. 177 A very simple method was developed to produce high-quality, high-purity nanoparticles for use as catalysts, showing that nanoparticles formed by microwave irradiation have industrial applications.…”

Section: Microwavementioning

confidence: 99%

Toward Greener Nanosynthesis

2007

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Section: Microwavementioning

confidence: 99%

Toward Greener Nanosynthesis

2007

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“…Microwave irradiation has been applied in the microwave-assisted synthesis of inorganic nanostructured materials, including metals [71][72][73], semimetals [74,75], alloys [73,76], metal oxides [77][78][79][80], metal sulfides [55,[81][82][83], and others [84,85].…”

Section: Microwave-assisted Methodsmentioning

confidence: 99%

Graphitized nanocarbon-supported metal catalysts: synthesis, properties, and applications in heterogeneous catalysis

Huang

2017

Sci. China Mater.

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Graphitized nanocarbon materials can be an ideal catalyst support for heterogeneous catalytic systems. Their unique physical and chemical properties, such as large surface area, high adsorption capacity, excellent thermal and mechanical stability, outstanding electronic properties, and tunable porosity, allow the anchoring and dispersion of the active metals. Therefore, currently they are used as the key support material in many catalytic processes. This review summarizes recent relevant applications in supported catalysts that use graphitized nanocarbon as supports for catalytic oxidation, hydrogenation, dehydrogenation, and C-C coupling reactions in liquid-phase and gas-solid phase-reaction systems. The latest developments in specific features derived from the morphology and characteristics of graphitized nanocarbon-supported metal catalysts are highlighted, as well as the differences in the catalytic behavior of graphitized nanocarbon-supported metal catalysts versus other related catalysts. The scientific challenges and opportunities in this field are also discussed. Keywords: nanocarbon materials; graphitized carbon supports; metal catalysts; hetergeneous catalysis INTRODUCTIONCarbon combines its atoms in diverse hybridization states (sp, sp 2 , sp 3 ) to form a variety of polymorphs. These are composed entirely of carbon but have different physical structures and different names, including diamond, graphite, fullerenes, and carbines, among others [1][2][3][4][5]. Because these various and versatile allotropes produce materials with a large range of properties, carbon materials can be used in a number of technological processes, including high-tech catalytic ones [6][7][8][9][10].In heterogeneous catalysis, carbon material plays wellestablished and important roles in a wide range of applications, both as catalyst in its own right and as a unique support material [11][12][13][14][15]. The chemical stability of carbon supports in some specifically aqueous phase biomass conversion surpasses that of metal oxide materials; in addition, carbon materials present other common and key advantages as support materials for catalysis [1,5]. From the point of physical structure, porous carbon can be prepared in different forms (granules, cloth, fibers, pallets, etc.). Due to its chemical properties, carbon structure is resistant to both acidic and basic media. The structure of carbon is stable at high temperature (even above 1023 K under inert atmosphere). The hydrophilic/ hydrophobic nature of carbon can be easily modified. Active metals on the support can be easily reduced. For the purposes of industrial economy and environment, the active phase can be easily recovered. Conventional carbon supports are lower-cost and more easily available than other conventional supports. Although several kinds of carbon materials have been studied, active carbon (AC) [12,[16][17][18][19] and, to a lesser extend, carbon black [20][21][22][23] have long been the most commonly used carbon supports. AC is an amorphous solid prepa...

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“…Among a rich variety of chemical methods including solvothermal, hot-injection or arrested precipitation, sol-gel and wet chemical route [23][24][25], microwave-assisted chemical synthesis (MACS) is a method not frequently used for synthesis of inorganic materials; there are few publications regarding the synthesis of this kind of metal chalcogenides, such as CZTS, CuInSe2, CuInTe2, CuInS2, ZnSe, Cu2S, CdS, CdSe, ZnS, ZnSe and CdTe [38][39][40][41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%