Nanocrystals: Solution-based synthesis and applications as nanocatalysts

Wang, Dingsheng; Xie, Ting; Li, Yadong

doi:10.1007/s12274-009-9007-x

Cited by 171 publications

(108 citation statements)

References 96 publications

(37 reference statements)

Supporting

Mentioning

107

Contrasting

Order By: Relevance

“…Also in the case of -NaREF 4 nanocrystals, hot-injection methods are frequently used, because the metal trifluoroacetates from suitable thermally labile precursors for such metal fluoride nanoparticles. The physicochemical aspects of the hot-injection methods are discussed in detail in several review articles [4,5,61].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of β-Phase NaYF₄:Yb,Er Upconversion Nanocrystals and Nanorods by Hot-Injection of Small Particles of the α-Phase

Nordmann

Voss

Komban³

et al. 2014

Zeitschrift Für Physikalische Chemie

View full text Add to dashboard Cite

-NaYF 4 :Yb,Er upconversion nanocrystals are synthesized by a hotinjection method employing purified -NaYF 4 :Yb,Er particles with a size of approximately 2-3 nm as single-source precursor. The method allows to prepare either spherical nanoparticles with different sizes or nanorods by simply controlling the addition rate of the solution of -phase particles and performing the synthesis either in the absence or in the presence of seed particles. The luminescence properties of the different particles are compared also including core-shell particles.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis of β-Phase NaYF₄:Yb,Er Upconversion Nanocrystals and Nanorods by Hot-Injection of Small Particles of the α-Phase

Nordmann

Voss

Komban³

et al. 2014

Zeitschrift Für Physikalische Chemie

View full text Add to dashboard Cite

show abstract

“…Si et al subsequently prepared Au-CeO 2 nanocomposite catalysts with different shapes of CeO 2 crystals and found a similar crystal plane effect for the water-gas shift reaction [4]. Observation of such unexpected properties usually results from employing special techniques in the fabrication of catalytic materials [5,6].…”

Section: Introductionmentioning

confidence: 99%

Surface active sites on Co3O4 nanobelt and nanocube model catalysts for CO oxidation

et al. 2010

Self Cite

View full text Add to dashboard Cite

CO oxidation has been performed on Co 3 O 4 nanobelts and nanocubes as model catalysts. The Co 3 O 4 nanobelts which have a predominance of exposed {011} planes are more active than Co 3 O 4 nanocubes with exposed {001} planes. Temperature programmed reduction of CO shows that Co 3 O 4 nanobelts have stronger reducing properties than Co 3 O 4 nanocubes. The essence of shape and crystal plane effect is revealed by the fact that turnover frequency of Co 3+ sites of {011} planes on Co 3 O 4 nanobelts is far higher than that of {001} planes on Co 3 O 4 nanocubes.

show abstract

Section: Introductionmentioning

confidence: 99%

“…However, design of facile and general strategies for the synthesis of other intermetallics and alloys with high surface areas still remains a great challenge. Undoubtedly, the emergence and development of nanoscience and nanotechnology offer new opportunities in this area [14][15][16][17][18].Recently, we developed a general strategy for the synthesis of various nanocrystals, whereby noble metal ions can be reduced to monodisperse noble metal nanocrystals by a mixture of ethanol and linoleic acid [19]. However, attempts to synthesize intermetallics and alloys of noble and non-noble metals (e.g., FePt, NiPt, and CoPd) with this strategy were unsuccessful, mainly due to the low reducing power of ethanol and linoleic acid.…”

mentioning

confidence: 99%

Nanocrystalline intermetallics and alloys

2010

Self Cite

View full text Add to dashboard Cite

Nanocrystalline intermetallics and alloys are novel materials with high surface areas which are potential low-cost and high-performance catalysts. Here, we report a general approach to the synthesis of a large variety of nanocrystalline intermetallics and alloys with controllable composition, size, and morphology: these include Au-, Pd-, Pt-, Ir-, Ru-, and Rh-based bi-or tri-metallic nanocrystals. We find that only those intermetallics and alloys whose effective electronegativity is larger than a critical value (1.93) can be prepared by co-reduction in our synthetic system. Our methodology provides a simple and convenient route to a variety of intermetallic and alloyed nanomaterials which are promising candidates for catalysts for reactions such as methanol oxidation, hydroformylation, the Suzuki reaction, cyclohexene hydroconversion, and the selective hydrogenation of acetylene. KEYWORDSIntermetallics, alloys, nanocrystals, controllable synthesis, catalystsSince the discovery of intermetallic compounds of the type MNi 5 (M = Th, U, or Zr) which perform as effective methanation catalysts [1], intermetallics, and alloys have emerged as a class of novel materials which provide great opportunities for the development of low-cost and high-performance industrial catalysts [2][3][4][5][6][7][8]. Intermetallics and alloys are traditionally synthesized using metallurgical techniques which require high-temperature heating and annealing for long periods of time [9,10]. Via these strategies, it is difficult to obtain nanocrystalline intermetallics and alloys with the high surface areas which are urgently needed in various applied fields such as energy, environment, and catalysis [11,12]. As early as 1926, Raney Ni with a high surface area was prepared via selective leaching of nickel-aluminium alloys by Murray Raney [13]. However, design of facile and general strategies for the synthesis of other intermetallics and alloys with high surface areas still remains a great challenge. Undoubtedly, the emergence and development of nanoscience and nanotechnology offer new opportunities in this area [14][15][16][17][18].Recently, we developed a general strategy for the synthesis of various nanocrystals, whereby noble metal ions can be reduced to monodisperse noble metal nanocrystals by a mixture of ethanol and linoleic acid [19]. However, attempts to synthesize intermetallics and alloys of noble and non-noble metals (e.g., FePt, NiPt, and CoPd) with this strategy were unsuccessful, mainly due to the low reducing power of ethanol and linoleic acid. On the other hand, we found that with strong reducing agents such as NaBH4 and N2H4, the Nano Res (2010) 3: 574-580 DOI 10.1007/s12274-010-0018-4 Research Article Address correspondence to ydli@mail.tsinghua.edu.cn Nano Res (2010) 3: 574-580 575 difference in electron affinities of the transition and noble metals dominates the reduction process. As a result, it becomes difficult to precisely control the nucleation and growth process to obtain intermetallics and alloys, and core-she...

show abstract

Nanocrystals: Solution-based synthesis and applications as nanocatalysts

Cited by 171 publications

References 96 publications

Synthesis of β-Phase NaYF₄:Yb,Er Upconversion Nanocrystals and Nanorods by Hot-Injection of Small Particles of the α-Phase

Synthesis of β-Phase NaYF₄:Yb,Er Upconversion Nanocrystals and Nanorods by Hot-Injection of Small Particles of the α-Phase

Surface active sites on Co3O4 nanobelt and nanocube model catalysts for CO oxidation

Nanocrystalline intermetallics and alloys

Contact Info

Product

Resources

About

Nanocrystals: Solution-based synthesis and applications as nanocatalysts

Cited by 171 publications

References 96 publications

Synthesis of β-Phase NaYF4:Yb,Er Upconversion Nanocrystals and Nanorods by Hot-Injection of Small Particles of the α-Phase

Synthesis of β-Phase NaYF4:Yb,Er Upconversion Nanocrystals and Nanorods by Hot-Injection of Small Particles of the α-Phase

Surface active sites on Co3O4 nanobelt and nanocube model catalysts for CO oxidation

Nanocrystalline intermetallics and alloys

Contact Info

Product

Resources

About

Synthesis of β-Phase NaYF₄:Yb,Er Upconversion Nanocrystals and Nanorods by Hot-Injection of Small Particles of the α-Phase

Synthesis of β-Phase NaYF₄:Yb,Er Upconversion Nanocrystals and Nanorods by Hot-Injection of Small Particles of the α-Phase