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Carbon-Coated Core–Shell Fe–Cu Nanoparticles as Highly Active and Durable Electrocatalysts for a Zn–Air Battery

14-May-2015 | Gyutae Nam; Joohyuk Park; Min Choi; Pilgun Oh; Suhyeon Park; Min Gyu Kim; Noejung Park; Jaephil Cho; Jang-Soo Lee, ACS Nano, 2015

Understanding the interaction between a catalyst and oxygen has been a key step in designing better electrocatalysts for the oxygen reduction reaction (ORR) as well as applying them in metal–air batteries and fuel cells. Alloying has been studied to finely tune the catalysts’ electronic ...

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Microstructure and corrosion resistance behavior of Cr‐Nb alloyed layer on low carbon steel

14-May-2015 | Y.‐M. Zhu, P.‐Z. Zhang, X.‐F. Wei, D.‐B. Wei, X.‐H. Chen, P. Zhou, Materials and Corrosion, 2015

The Cr‐Nb alloyed layer formed on the surface of low carbon steel by double glow plasma surface alloying could improve the corrosion resistance of the substrate. The morphology and microstructure of the layer were investigated by scanning electron microscopy, energy dispersive spectrometer and ...

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Photodegradation of Imidacloprid in Aqueous Solution by the Metal-Free Catalyst Graphitic Carbon Nitride using an Energy-Saving Lamp

12-May-2015 | Xue Liu; Xiaoli Wu; Zhen Long; Che Zhang; Yongqiang Ma; Xianghong Hao; Hongyan Zhang; Canping Pan, Journal of Agricultural and Food Chemistry, 2015

Imidacloprid has become a research hotspot, due to its high toxicity to bees and other nontarget organisms. Photodegradation is a common method for removing imidacloprid in an aquatic environment. Traditional methods of pesticide photodegradation have generally been confined by many factors, such ...

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Influence of Calcium Sulfoaluminate (CSA) Cement Content on Expansion and Hydration Behavior of Various Ordinary Portland Cement‐CSA Blends

09-May-2015 | Piyush Chaunsali, Paramita Mondal, Journal of the American Ceramic Society, 2015

Calcium sulfoaluminate (CSA) cements have lower carbon footprint than that of portland cement, which makes them a suitable alternative as a sustainable cementitious binder. Early‐age expansion of CSA cements can be exploited to induce compressive stress in restrained concrete which can later ...

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Direct and Complete Phosphorus Recovery from Municipal Wastewater Using a Hybrid Microfiltration-Forward Osmosis Membrane Bioreactor Process with Seawater Brine as Draw Solution

06-May-2015 | Guanglei Qiu; Yi-Ming Law; Subhabrata Das; Yen-Peng Ting, Environmental Science & Technology, 2015

We report a hybrid microfiltration-forward osmosis membrane bioreactor (MF-FOMBR) for direct phosphorus recovery from municipal wastewater in the course of its treatment. In the process, a forward osmosis (FO) membrane and a microfiltration (MF) membrane are operated in parallel in a bioreactor. ...

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One-Step Formation of Bifunctionnal Aryl/Alkyl Grafted Films on Conducting Surfaces by the Reduction of Diazonium Salts in the Presence of Alkyl Iodides

04-May-2015 | Dardan Hetemi; Hassan Hazimeh; Philippe Decorse; Anouk Galtayries; Catherine Combellas; Frédéric Kanoufi; Jean Pinso ..., Langmuir, 2015

The formation of partial perfluoroalkyl or alkyl radicals from partial perfluoroalkyl or alkyl iodides (ICH2CH2C6F13 and IC6H13) and their reaction with surfaces takes place at low driving force (∼−0.5 V/SCE) when the electrochemical reaction is performed in acetonitrile in the presence of ...

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Intramolecular Hydrogen Bonds Quench Photoluminescence and Enhance Photocatalytic Activity of Carbon Nanodots

29-Apr-2015 | Pengju Yang, Jianghong Zhao, Lexi Zhang, Li Li, Zhenping Zhu, Chemistry - A European Journal, 2015

Abstract Understanding the photoluminescence (PL) and photocatalytic properties of carbon nanodots (CNDs) induced by environmental factors such as pH through surface groups is significantly important to rationally tune the emission and photodriven catalysis of CNDs. Through adjusting the pH of ...

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Interaction of multi‐walled carbon nanotube with poly(m‐aminophenol) in their processable conducting nanocomposite

27-Apr-2015 | Sushil Kumar Verma, Arup Choudhury, Pradip Kar, physica status solidi (a), 2015

Poly(m‐aminophenol)‐multi‐walled carbon nanotube (PmAP‐MWCNT) composites are successfully synthesized by in situ chemical oxidative polymerization of m‐aminophenol (mAP) with varying amount of MWCNT dispersion in aqueous sodium hydroxide medium. All the synthesized PmAP‐MWCNT nanocomposites are ...

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Energy transfer through heterogeneous dyes‐substituted fluorene‐containing alternating copolymers and their dual‐emission properties in the films

24-Apr-2015 | Hyeonuk Yeo, Kazuo Tanaka, Yoshiki Chujo, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT We report synthesis of the modified fluorene polymers tethered to the heterogeneous types of the fluorescent dyes at the cardo carbon for obtaining the dual‐emissive solid materials. A series of the alternating fluorene copolymers modified with pyrene or 9,10‐diphenylanthracene and ...

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Heterocyclic Digallanates, Encapsulation of Lithium Cations in Organometallic Cages and C–H Bond Activation

23-Apr-2015 | Werner Uhl, Anne Hentschel, Dirk Kovert, Jutta Kösters, Marcus Layh, European Journal of Inorganic Chemistry, 2015

Abstract Hydrogallation of the dialkynylbenzenes 1,3‐(R2R′Si‐C≡C)2C6H4 (3: R = Me, R′ = Ph; 4: R = Ph, R′ = Me) with dichlorogallane, H‐GaCl2, afforded the corresponding dialkenylbenzenes 5 and 6, with GaCl2 groups geminal to the silyl substituents. Compound 6 was characterised by crystal ...

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