Untitled

Zhu, Yanqing; Li, Hongliang; Koltypin, Yuri; Hacohen, Y. Rosenfeld; Gedanken, Aharon

doi:10.1039/b108968b

Cited by 256 publications

(124 citation statements)

References 20 publications

Supporting

Mentioning

119

Contrasting

Unclassified

Order By: Relevance

“…Recently, new hierarchical heterostructures, in which the major cores and the branches consist of different materials, have attracted considerable attention with respect to the realization of multicomponent system functional electronic devices. Ren's group [7] first explored the growth of hierarchical In 2 O 3 (core) and ZnO (branch) nanowire heterostructures; Bae et al [8] then systematically synthesized various nanowire heterostructures built up of ZnO and other semiconductors. Si-based nano-and microstructures are of special interest due to the key role of Si in the modern semiconductor industry.…”

Section: Methodsmentioning

confidence: 99%

Shaping Nanometer‐Scale Architecture Through Surface Chemistry

Šaponjić¹,

Dimitrijević²,

Tiede³

et al. 2005

Advanced Materials

128

130

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Shaping Nanometer‐Scale Architecture Through Surface Chemistry

Šaponjić¹,

Dimitrijević²,

Tiede³

et al. 2005

Advanced Materials

128

130

View full text Add to dashboard Cite

“…Gedanken and coworkers have reported various nanostructured metal oxide syntheses including TiO 2 , [50] Fe 3 O 4 , [51] a-Ni(OH) 2 , [52] GaO(OH), [53] In(OH) 3 , [54] and BaFe 12 O 19 . [55] In their syntheses, sonication of an aqueous metal salt solution is carried out under ambient conditions (usually in the presence of air) to prepare various forms of nanostructured metal oxides.…”

Section: Metal Oxidesmentioning

confidence: 99%

Applications of Ultrasound to the Synthesis of Nanostructured Materials

2010

View full text Add to dashboard Cite

Recent advances in nanostructured materials have been led by the development of new synthetic methods that provide control over size, morphology, and nano/microstructure. The utilization of high intensity ultrasound offers a facile, versatile synthetic tool for nanostructured materials that are often unavailable by conventional methods. The primary physical phenomena associated with ultrasound that are relevant to materials synthesis are cavitation and nebulization. Acoustic cavitation (the formation, growth, and implosive collapse of bubbles in a liquid) creates extreme conditions inside the collapsing bubble and serves as the origin of most sonochemical phenomena in liquids or liquid-solid slurries. Nebulization (the creation of mist from ultrasound passing through a liquid and impinging on a liquid-gas interface) is the basis for ultrasonic spray pyrolysis (USP) with subsequent reactions occurring in the heated droplets of the mist. In both cases, we have examples of phase-separated attoliter microreactors: for sonochemistry, it is a hot gas inside bubbles isolated from one another in a liquid, while for USP it is hot droplets isolated from one another in a gas. Cavitation-induced sonochemistry provides a unique interaction between energy and matter, with hot spots inside the bubbles of approximately 5000 K, pressures of approximately 1000 bar, heating and cooling rates of >10(10) K s(-1); these extraordinary conditions permit access to a range of chemical reaction space normally not accessible, which allows for the synthesis of a wide variety of unusual nanostructured materials. Complementary to cavitational chemistry, the microdroplet reactors created by USP facilitate the formation of a wide range of nanocomposites. In this review, we summarize the fundamental principles of both synthetic methods and recent development in the applications of ultrasound in nanostructured materials synthesis.

show abstract

“…Therefore, improvement of the hydrothermal synthesis process for shortening of the reaction time is very important. Many researchers have prepared TiO 2 NTby hydrothermal technique with the assistance of sonication (Meskin et al, 2006;Zhu et al, 2001). Unfortunately this improvement is complicated because sonication treatment was used in situ with hydrothermal process (Meskin et al, 2006).…”

Section: Introductionmentioning

confidence: 99%