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JournalISSN: 2040-3364

Nanoscale

About: Nanoscale is an academic journal. The journal publishes majorly in the area(s): Graphene & Nanoparticle. It has an ISSN identifier of 2040-3364. Over the lifetime, 20969 publication(s) have been published receiving 767915 citation(s).

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Topics: Graphene, Nanoparticle, Carbon nanotube ...read more
Papers
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Journal ArticleDOI: 10.1039/C1NR10867K
Jeong-Hyeok Im1, Chang-Ryul Lee1, Jin-Wook Lee1, Sang-Won Park1  +1 moreInstitutions (1)
05 Oct 2011-Nanoscale
Abstract: Highly efficient quantum-dot-sensitized solar cell is fabricated using ca. 2–3 nm sized perovskite (CH3NH3)PbI3 nanocrystal. Spin-coating of the equimolar mixture of CH3NH3I and PbI2 in γ-butyrolactone solution (perovskite precursor solution) leads to (CH3NH3)PbI3 quantum dots (QDs) on nanocrystalline TiO2 surface. By electrochemical junction with iodide/iodine based redox electrolyte, perovskite QD-sensitized 3.6 μm-thick TiO2 film shows maximum external quantum efficiency (EQE) of 78.6% at 530 nm and solar-to-electrical conversion efficiency of 6.54% at AM 1.5G 1 sun intensity (100 mW cm−2), which is by far the highest efficiency among the reported inorganic quantum dot sensitizers.

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Topics: Quantum dot solar cell (62%), Perovskite (structure) (59%), Solar cell (58%) ...read more

2,476 Citations


Journal ArticleDOI: 10.1039/C4NR01600A
04 Mar 2015-Nanoscale
Abstract: We present the science and technology roadmap for graphene, related two-dimensional crystals, and hybrid systems, targeting an evolution in technology, that might lead to impacts and benefits reaching into most areas of society. This roadmap was developed within the framework of the European Graphene Flagship and outlines the main targets and research areas as best understood at the start of this ambitious project. We provide an overview of the key aspects of graphene and related materials (GRMs), ranging from fundamental research challenges to a variety of applications in a large number of sectors, highlighting the steps necessary to take GRMs from a state of raw potential to a point where they might revolutionize multiple industries. We also define an extensive list of acronyms in an effort to standardize the nomenclature in this emerging field.

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2,215 Citations


Journal ArticleDOI: 10.1039/C0NR00583E
12 Jan 2011-Nanoscale
Abstract: Native wood celluloses can be converted to individual nanofibers 3–4 nm wide that are at least several microns in length, i.e. with aspect ratios >100, by TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl radical)-mediated oxidation and successive mild disintegration in water. Preparation methods and fundamental characteristics of TEMPO-oxidized cellulose nanofibers (TOCN) are reviewed in this paper. Significant amounts of C6 carboxylate groups are selectively formed on each cellulose microfibril surface by TEMPO-mediated oxidation without any changes to the original crystallinity (∼74%) or crystal width of wood celluloses. Electrostatic repulsion and/or osmotic effects working between anionically-charged cellulose microfibrils, the ζ-potentials of which are approximately −75 mV in water, cause the formation of completely individualized TOCN dispersed in water by gentle mechanical disintegration treatment of TEMPO-oxidized wood cellulose fibers. Self-standing TOCN films are transparent and flexible, with high tensile strengths of 200–300 MPa and elastic moduli of 6–7 GPa. Moreover, TOCN-coated poly(lactic acid) films have extremely low oxygen permeability. The new cellulose-based nanofibers formed by size reduction process of native cellulose fibers by TEMPO-mediated oxidation have potential application as environmentally friendly and new bio-based nanomaterials in high-tech fields.

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Topics: Cellulose microfibril (67%), Cellulose fiber (64%), Cellulose (59%) ...read more

1,838 Citations


Journal ArticleDOI: 10.1039/C2NR32040A
Mingjia Zhi1, Chengcheng Xiang1, Jiangtian Li1, Ming Li1  +1 moreInstitutions (1)
07 Jan 2013-Nanoscale
Abstract: This paper presents a review of the research progress in the carbon–metal oxide composites for supercapacitor electrodes. In the past decade, various carbon–metal oxide composite electrodes have been developed by integrating metal oxides into different carbon nanostructures including zero-dimensional carbon nanoparticles, one-dimensional nanostructures (carbon nanotubes and carbon nanofibers), two-dimensional nanosheets (graphene and reduced graphene oxides) as well as three-dimensional porous carbon nano-architectures. This paper has described the constituent, the structure and the properties of the carbon–metal oxide composites. An emphasis is placed on the synergistic effects of the composite on the performance of supercapacitors in terms of specific capacitance, energy density, power density, rate capability and cyclic stability. This paper has also discussed the physico-chemical processes such as charge transport, ion diffusion and redox reactions involved in supercapacitors.

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Topics: Carbon nanofiber (62%), Carbon nanotube (58%), Graphene (57%) ...read more

1,593 Citations


Journal ArticleDOI: 10.1039/C3NR00476G
Xiaoyang Pan1, Min-Quan Yang1, Xianzhi Fu1, Nan Zhang1  +1 moreInstitutions (1)
19 Apr 2013-Nanoscale
Abstract: Titanium dioxide (TiO2), as an important semiconductor metal oxide, has been widely investigated in the field of photocatalysis. The properties of TiO2, including its light absorption, charge transport and surface adsorption, are closely related to its defect disorder, which in turn plays a significant role in the photocatalytic performance of TiO2. Among all the defects identified in TiO2, oxygen vacancy is one of the most important and is supposed to be the prevalent defect in many metal oxides, which has been widely investigated both by theoretical calculations and experimental characterizations. Here, we give a short review on the existing strategies for the synthesis of defective TiO2 with oxygen vacancies, and the defect related properties of TiO2 including structural, electronic, optical, dissociative adsorption and reductive properties, which are intimately related to the photocatalytic performance of TiO2. In particular, photocatalytic applications with regard to defective TiO2 are outlined. In addition, we offer some perspectives on the challenge and new direction for future research in this field. We hope that this tutorial minireview would provide some useful contribution to the future design and fabrication of defective semiconductor-based nanomaterials for diverse photocatalytic applications.

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1,345 Citations


Performance
Metrics
No. of papers from the Journal in previous years
YearPapers
20211,781
20202,319
20192,350
20182,429
20172,130
20162,194

Top Attributes

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Journal's top 5 most impactful authors

Martin Pumera

46 papers, 2.2K citations

Han Zhang

28 papers, 1.1K citations

Xiao Cheng Zeng

20 papers, 1.1K citations

Wei Huang

17 papers, 1.3K citations

Shaojun Dong

16 papers, 968 citations

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