Organometallic and Metallo-Organic Precursors for Nanoparticles

Malik, M. A.; O’Brien, Paul

doi:10.1007/b136147

Cited by 17 publications

(8 citation statements)

References 213 publications

(195 reference statements)

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“…[39][40][41][42][43][44][45][46][47][48][49] In particular, M 3 II [Co(CN) 6 ] 2 $nH 2 O (M ¼ Mn, Co, Cd, Zn, Fe) particles have been obtained at room temperature in water-ethanol systems. [50][51][52] These NMOFs not only have been explored for gas storage, biomedical imaging and drug delivery, [53][54][55][56][57][58][59] but also employed as templates/precursors for preparation of nanomaterials. [60][61][62][63] Recently, a new burgeoning direction in the eld of NMOFs is their use as 'precursors' of new nanostructured materials, primarily via a thermolysis procedure.…”

Section: Introductionmentioning

confidence: 99%

Hollow/porous nanostructures derived from nanoscale metal–organic frameworks towards high performance anodes for lithium-ion batteries

2014

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Lithium-ion batteries (LIBs), owing to their high energy density, light weight, and long cycle life, have shown considerable promise for storage devices. The successful utilization of LIBs depends strongly on the preparation of nanomaterials with outstanding lithium storage properties. Recent progress has demonstrated that hollow/porous nanostructured oxides are very attractive candidates for LIBs anodes due to their high storage capacities. Here, we aim to provide an overview of nanoscale metal-organic frameworks (NMOFs)-templated synthesis of hollow/porous nanostructured oxides and their LIBs applications. By choosing some typical NMOFs as examples, we present a comprehensive summary of synthetic procedures for nanostructured oxides, such as binary, ternary and composite oxides. Hollow/porous structures are readily obtained due to volume loss and release of internally generated gas molecules during the calcination of NMOFs in air. Interestingly, the NMOFs-derived hollow/porous structures possess several special features: pores generated from gas molecules release will connect to each other, which are distinct from "dead pores"; pore size often appears to be <10 nm; in terms of surface chemistry, the pore surface is hydrophobic. These structural features are believed to be the most critical factors that determine LIBs' performance. Indeed, it has been shown that these NMOFs-derived hollow/porous oxides exhibit excellent electrochemical performance as anode materials for LIBs, including high storage capacity, good cycle stability, and so on. For example, a high charge capacity of 1465 mA h g(-1) at a rate of 300 mA g(-1) was observed after 50 cycles for NMOFs-derived Co3O4 porous nanocages, which corresponds to 94.09% of the initial capacity (1557 mA h g(-1)), indicating excellent stability. The capacity of NMOFs-derived Co3O4 is higher than that of other Co3O4 nanostructures obtained by a conventional two-step route, including nanosheets (1450 mA h g(-1) at 50 mA g(-1)), nanobelts (1400 mA h g(-1) at 40 mA g(-1)) and nanoflowers (694 mA h g(-1) at 100 mA g(-1)). The capacity is also better than Co3O4 octahedra obtained by a one-step hydrothermal method (946 mA h g(-1) at 100 mA g(-1)). In this review, we will summarize the recent research advances on NMOFs-derived hollow/porous oxides as LIBs anodes. The enhanced lithium storage properties have been discussed in relation to their special structural parameters. Moreover, remarks on the current challenges and perspectives for future NMOFs applications are proposed. Through this systematic review, we aim to stress the importance of NMOFs templates for the fabrication of hollow/porous functional materials that would result in improved physicochemical properties and provide insights to guide future research for LIBs applications.

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Section: Introductionmentioning

confidence: 99%

Hollow/porous nanostructures derived from nanoscale metal–organic frameworks towards high performance anodes for lithium-ion batteries

2014

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“…Writing with an atomic force microscopy (AFM) tip, called dip-pen lithography, or direct imprinting of precursors has also been well established. More than the methods, at present, the quest is around the precursors . Designing and developing precursors suited to processes aimed at producing a given material with prescribed crystallinity, morphology, purity, etc.…”

Section: Introductionmentioning

confidence: 99%

Metal Anion–Alkyl Ammonium Complexes as Direct Write Precursors to Produce Nanopatterns of Metals, Nitrides, Oxides, Sulfides, And Alloys

Radha

Kiruthika

2011

J. Am. Chem. Soc.

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The study explores the possibility of using metal anions complexed with tetraoctylammonium bromide (ToABr) as single-source direct write precursors in e-beam and soft lithography processes to obtain micro- and nanoscale patterns of various metals, i.e., Au, Pd, Pt, Ag, Pb and Cu, as well as of their alloys (AuCu), oxides (Co(3)O(4), ZnO), nitrides (CoN, InN, GaN), and sulfides (Ag(2)S). The extraction efficiency of ToABr for different metal anions is found to be varied (40-90%), but the obtained precursors are easily processable as they have reasonable solubility in common solvents and are obtainable as smooth films, both being important for high-resolution patterning. The e-resist action of the precursors originates from the extreme e-beam sensitivity of the hydrocarbon chain present in ToABr, while direct micromolding has been possible due to easy flow of the precursor solutions in capillaries. The interaction of the anion and ToABr being mainly electrostatic enables easy removal of the hydrocarbon from patterned regions by thermolysis on a hot plate in the ambient or in controlled atmosphere to form the desired product. This method can be easily generalized.

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“…In particular, the synthesis of high aspect ratio nanomaterials has been achieved via chemical vapor deposition, thermolysis in the presence of amines, and, more recently, with the use of templates such as porous alumina and DNA molecules . Like others, we have been exploring the possible employment of organometallic clusters as precursors for the deposition of metallic nanoparticles with size and possibly shape control …”

Section: Introductionmentioning

confidence: 99%

Thermolysis of Polymeric [Ru(CO)₄]_∞ to Metallic Ruthenium: Molecular Shape of the Precursor Affects the Nanoparticle Shape

Leong

2008

Langmuir

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Organometallic and Metallo-Organic Precursors for Nanoparticles

Cited by 17 publications

References 213 publications

Hollow/porous nanostructures derived from nanoscale metal–organic frameworks towards high performance anodes for lithium-ion batteries

Hollow/porous nanostructures derived from nanoscale metal–organic frameworks towards high performance anodes for lithium-ion batteries

Metal Anion–Alkyl Ammonium Complexes as Direct Write Precursors to Produce Nanopatterns of Metals, Nitrides, Oxides, Sulfides, And Alloys

Thermolysis of Polymeric [Ru(CO)₄]_∞ to Metallic Ruthenium: Molecular Shape of the Precursor Affects the Nanoparticle Shape

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Organometallic and Metallo-Organic Precursors for Nanoparticles

Cited by 17 publications

References 213 publications

Hollow/porous nanostructures derived from nanoscale metal–organic frameworks towards high performance anodes for lithium-ion batteries

Hollow/porous nanostructures derived from nanoscale metal–organic frameworks towards high performance anodes for lithium-ion batteries

Metal Anion–Alkyl Ammonium Complexes as Direct Write Precursors to Produce Nanopatterns of Metals, Nitrides, Oxides, Sulfides, And Alloys

Thermolysis of Polymeric [Ru(CO)4]∞ to Metallic Ruthenium: Molecular Shape of the Precursor Affects the Nanoparticle Shape

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Thermolysis of Polymeric [Ru(CO)₄]_∞ to Metallic Ruthenium: Molecular Shape of the Precursor Affects the Nanoparticle Shape