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14.676 Aktuelle Fachpublikationen zum Thema temperature

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Creation of mesopores in carbon nanotubes with improved capacities for lithium ion batteries

22.10.2014 | Yuan Xu; Jiang Gong; Xuecheng Chen; Ryszard J. Kalenczuk; Ewa Mijiowska; Wenbin Liu; Tao Tang, Physical Chemistry Chemical Physics, 2014

The porous carbon nanotubes were selectively prepared from the pristine carbon nanotubes. The surface of carbon nanotubes was firstly functionalized with Fe2O3 nanoparticles and subsequent heat treatment induced CNT etching. After removal of Fe2O3 nanoparticles, mesopores were formed in carbon ...

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Nanoparticle characterization based on STM and STS

22.10.2014 | Shinya Kano; Tsukasa Tada; Yutaka Majima, Chemical Society Reviews, 2014

In this review, we describe recent progress made in the study of nanoparticles characterized by scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS). Basic principles of STM measurements and single-electron tunneling phenomena through a single NP are summarized. We ...

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ZnO/graphene hybrid with remarkably enhanced lithium storage capability

21.10.2014 | Shuang Li; Ying Xiao; Xia Wang; minhua cao, Physical Chemistry Chemical Physics, 2014

In this work, ZnO/graphene (ZnO/GN) hybrid is successfully synthesized from graphene oxide (GO) and zinc hydroxide [Zn(OH)2)] by a facile freeze drying treatment and subsequent heat treatment method. The uniform ZnO nanoparticles (NPs) with a diameter less than 10 nm size were uniformly anchored ...

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Platinum nanoparticles strongly associated with graphitic carbon nitride as efficient co-catalysts for photocatalytic hydrogen evolution under visible light

21.10.2014 | Yasuhiro Shiraishi; Yusuke Kofuji; Shunsuke Kanazawa; Hirokatsu Sakamoto; Satoshi Ichikawa; Shunsuke Tanaka; Takayuk ..., Chemical Communication, 2014

Platinum (Pt) nanoparticles with <4 nm diameter loaded on graphitic carbon nitride (g-C3N4) by reduction at 673 K behave as efficient co-catalysts for photocatalytic hydrogen evolution under visible light (λ

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Green photocatalytic organic transformations by polyoxometalates vs mesoporous TiO2 nanoparticles: Selective aerobic oxidation of alcohols. the article is invited paper for the “Special Issue of 8TH EUROPEAN MEETING ON SOLAR CHEMISTRY AND PHOTOCATALYSIS: ENVIRONMENTAL APPLICATIONS (SPEA 8)”

21.10.2014 | Ioannis Lykakis; Theodoros S Symeonidis; Ioannis Tamiolakis; Gerasimos S Armatas, Photochemical & Photobiological Sciences, 2014

In this study, the catalytic activity of decatungstate (W10O324-) supported on mesoporous TiO2 assemblies (DT-MTA) was compared with that of homogeneous [Bu4N]4W10O32 catalysts under mild conditions. Our experiments showed that both catalytic systems achieve exceptionally high activity and ...

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Responsive aqueous foams stabilised by silica nanoparticles hydrophobized in situ with a switchable surfactant

21.10.2014 | Yue Zhu; Jianzhong Jiang; Zhenggang Cui; Bernie Binks, Soft Matter, 2014

In the recent past there has been a growing interest in switchable surfactants and stimuli-responsive surface-active particles, since both have a surface activity which is either switchable or controllable and they can be recovered and re-used afterwards. Among various triggers the CO2/N2 trigger ...

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Laboratory study of the performance of the handheld Diffusion Size Classifier (DiSCmini) for various aerosols in the 15-400 nm range

21.10.2014 | Sébastien Bau; Baptiste Zimmermann; Raphaël Payet; Olivier Witschger, Journal of Environmental Monitoring, 2014

In addition to chemical composition, particle concentration and size are among the main parameters used to characterize exposure to airborne ultrafine or nanoparticles. To assess occupational inhalation exposure, real-time instruments are recommended in the recent strategies published. Among ...

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Robust platforms for creating organic–inorganic nanocomposite microspheres: decorating polymer microspheres containing mussel-inspired adhesion layers with inorganic nanoparticles

21.10.2014 | H. Satoh; Y. Saito; H. Yabu, Chemical Communication, 2014

We describe a method for creating robust and stable core–shell polymer microspheres decorated with inorganic (IO) nanoparticles (NPs) by a self-organization process and heterocoagulation using a mussel-inspired polymer adhesive layer between the IO NPs and the microspheres.

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Tandem-reduction of DMF with silanes via necklace-type transition over Pt(0) nanoparticles: deciphering the dual Si–H effect as an extension of steric effects

21.10.2014 | Vijay P. Taori; Michael R. Buchmeiser, Chemical Communication, 2014

Dimethylformamide (DMF) undergoes “double-reduction” to yield trimethylamine as a result of the concerted activation of DMF by two Si–H bonds (from different Si atoms) over Pt(0) nanoparticles as catalytic centers. Sterics on the Si atom govern the reaction and are also decisive for the structure ...

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Ligand Replacement Induced-Chemiluminescence for Selective Detection of Organophosphorus Pesticide Based on Bifunctional Au-Fe3O4 Dumbbell-like Nanoparticles

21.10.2014 | Jian Zhang; Jianping Wang; Liang Yang; Bianhua Liu; Guijian Guan; Changlong Jiang; zp zhang, Chemical Communication, 2014

Organophosphorus (OP) compounds are the most widely used pesticides in agricultural field due to their high effectiveness for insects and diseases eradication but also cause widespread residues in food products and contamination of environment. Most of the OP compounds could not been detected by ...

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