© WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
October 15, 2014
VIP: Non-Invasive Probing of Nanoparticle Electrostatics
Dr. Kristina Tschulik, Dr. Wei Cheng, Dr. Christopher Batchelor-McAuley, Stuart Murphy, Dr. Dario Omanović and Prof. Dr. Richard G. Compton
Not what you might think: A new and non-invasive technique to probe the electrostatic interaction between surface-charged nanoparticles and a charged metal/solution interface shows that electrostatic effects are insignificant in all but very dilute electrolytes.
Recently Published Articles
- Nanoimpacts Reveal the Electron-Transfer Kinetics of the Ferrocene/Ferrocenium Couple Immobilised on Graphene Nanoplatelets
Haoyu Wu, Qianqi Lin, Dr. Christopher Batchelor-McAuley and Prof. Dr. Richard G. Compton
Version of Record online: 28 JUL 2016 | DOI: 10.1002/celc.201600296
The big reveal: The kinetics of the ferrocene/ferrocenium (Cp2Fe/Cp2Fe+) redox couple in aqueous solution are evaluated by using the nanoimpacts method. Single graphene nanoplatelets (GNPs) modified with poly(vinylferrocene) are allowed to impact a microelectrode. For the duration (ca. 10–100 ms) of the impacts, the GNP adopts the potential of the electrode and acts as a “chemically modified nanoelectrode”. The study of individual impacts facilitates the resolution of fast electron-transfer kinetics that, for the Cp2Fe/Cp2Fe+ couple, is shown to be at least 3±1 s−1.
- Reduction of Nitrophenyl Films in Aqueous Solutions: How Many Electrons?
Dr. Paula A. Brooksby, James D. Shields, Anna K. Farquhar and Prof. Alison J. Downard
Version of Record online: 28 JUL 2016 | DOI: 10.1002/celc.201600395
Four or six electrons: By analyzing the relationships between the charges for redox reactions of nitrophenyl films in strongly acidic and basic solutions, guidelines for the determination of film surface concentrations are established.
- Self-Supporting and Binder-Free Anode Film Composed of Beaded Stream-Like Li4Ti5O12 Nanoparticles for High-Performance Lithium-Ion Batteries
Prof. Kaifu Huo, Xingxing Li, Biao Gao, Lei Wang, Qingwei Li, Xiang Peng, Dr. Xuming Zhang, Prof. Jijiang Fu and Prof. Paul K. Chu
Version of Record online: 28 JUL 2016 | DOI: 10.1002/celc.201600215
Self-help: A self-supporting film composed of arrays of Li4Ti5O12 (LTO) nanoparticles is designed as a high-performance binder-free anode in lithium-ion batteries. The LTO nanoparticles formed in situ are closely connected along the axial direction of the pristine TiO2 nanotubes, forming a beaded stream-like structure, which boasts a high a volumetric capacity of 304 mA h cm−3 at a current density of 50 mA cm−3 as well as a high rate capability of 208 mA h cm−3 at 5000 mA cm−3.
- Impurities in Nitrile Solvents Commonly Used for Electrochemistry, and their Effects on Voltammetric Data
Malcolm E. Tessensohn, Shu Jun Ng, Kwok Kiong Chan, Sher Li Gan, Natalie F. Sims, Yu Rong Koh and Prof. Dr. Richard D. Webster
Version of Record online: 28 JUL 2016 | DOI: 10.1002/celc.201600266
Quality control: The voltammetric behavior of quinones and phenylenediamines can be used to detect the presence of impurities in nitrile solvents. This is especially useful for propionitrile, where the purity can vary significantly between different suppliers.
- Highly Sensitive Detection of Silver Ions Enabled by RecJf Exonuclease Cleavage and Reductant Mediated Electrochemical Amplification
Limin Ning, Dawei Yang, Jue Wang and Peng Miao
Accepted manuscript online: 27 JUL 2016 11:00AM EST | DOI: 10.1002/celc.201600408