Volume 12

Issue 09,2019

(45 articles)


Kevin E. Fritz1, Yichen Yan1, and Jin Suntivich1,2 (*)

More electronegative 3d metals yield improved oxygen reduction reaction (ORR) activity in acidic environments for 3d metal substituted molybdenum and tungsten nitride catalysts.
2019, 12(9): 2307–2312
Published: 7 June 2019

Zheng Zhang1,2, Chao Ma3, Yunchuan Tu1,2, Rui Si4, Jie Wei1, Shuhong Zhang1, Zhen Wang5, Jian-Feng Li1, Ye Wang1, and Dehui Deng1,2 (*)

A multiscale carbon foam confining single iron atoms was synthesized with the assistant of SiO2 template. The optimized catalyst achieves a maximal CO Faradaic efficiency of 94.9% at a moderate potential of –0.5 V vs. RHE, and maintains stable over 60 hours.
2019, 12(9): 2313–2317
Published: 12 March 2019

Haixia Zhong1,§, Fanlu Meng1,2,§, Qi Zhang1,§, Kaihua Liu1,2, and Xinbo Zhang1 (*)

Fe and N doping porous carbon nematosphere (FeNPCN) is developed as the excellent carbon dioxide reduction (CO2RR) electrocatalyst in aqueous electrolyte, which possesses great potential application in CO2 reduction and syngas related industry.
2019, 12(9): 2318–2323
Published: 15 April 2019

Min Kuang§, Anxiang Guan§, Zhengxiang Gu, Peng Han, Linping Qian, and Gengfeng Zheng (*)

We developed a facile strategy to generate mesoporous N-doped carbon frameworks with tunable configurations and contents of N dopants, by using a secondary doping process via the treatment of a N,N-dimethylformamide (DMF) solvent. After the DMF treatment, the obtained N-doped carbon catalyst possesses a much increased density of pyridinic N and defects, which enhance the activation and adsorption of CO2 molecules, thus increasing the activity of CO2RR.
2019, 12(9): 2324–2329
Published: 23 April 2019

Zhan Jiang1,2, Yang Wang1,2 (*), Xiao Zhang2, Hongzhi Zheng2, Xiaojun Wang2, and Yongye Liang2 (*)

Metal phthalocyanine/carbon nanotube hybrids are prepared to study their cata-lytic performance for CO2 electroreduction. These hybrids show higher activity, better stability and unambiguous performance compared to molecules directly loaded on electrode with significant aggregation.
2019, 12(9): 2330–2334
Published: 13 June 2019

Bin E1,3,4,§, Bolong Huang2,§, Nan Zhang1, Qi Shao1,Yujing Li3,4, and Xiaoqing Huang1 (*)

Well-defined PtPb nanocrystals (NCs) have been selectively synthesized via an effective method, and the optimized PtPb octahedra nanocrystals (ONCs)/C is the most active catalyst for the ethanol reforming to H2. X-ray photoelectron spectroscopy (XPS) reveals that the high Pt(0)/Pt(II) ratio in PtPb NCs/C enhances the alcohols reforming. The density functional theory (DFT) studies show the PtPb ONCs possess the highest surface averaged electronic occupation for unit Pt-atom, matching well with XPS results.
2019, 12(9): 2335–2340
Published: 1 February 2019

Pengqi Yan1,§, Wenhan Guo2,§, Zibin Liang2, Wei Meng2, Zhen Yin3, Siwei Li1, Mengzhu Li1, Mengtao Zhang1, Jie Yan1, Dequan Xiao4, Ruqiang Zou2 (*), and Ding Ma1 (*)

K-Fe/C catalyst developed by Fe-based metal-organic framework (MOF) gel shows high efficiency and thermal stability on ammonia synthesis. The promotion of potassium was studied.
2019, 12(9): 2341–2347
Published: 23 March 2019

Hao Wu1,2, Qiang Fu1 (*), Yifan Li1,2, Yi Cui3, Rui Wang3, Nan Su1,2, Le Lin1, Aiyi Dong1, Yanxiao Ning1, Fan Yang1, and Xinhe Bao1,2

Controlled growth of uniform monolayer and bilayer ZnO nanostructures on Au(111) has been achieved using O3 and NO2, respectively, and strong hydroxylation of the two-dimensional ZnO overlayers was observed in milli-bar water vapor or with atomic hydrogen species.
2019, 12(9): 2348–2354
Published: 26 March 2019

Mark J. Meijerink, Krijn P. de Jong, and Jovana Zeevi (*)

Liquid phase transmission electron microscopy (TEM) has a power to provide unique insight in nanoscale dynamic processes involving oxides nanomaterials, but material stability during imaging remains a challenge. Here we demonstrate that there is a correlation between oxide stability in LP-TEM and Gibbs free energy of hydration, which can aid in assessment of oxide suitability for LP-TEM.
2019, 12(9): 2355–2363
Published: 22 May 2019

Anthony Curto1,§, Zhaozong Sun2,§, Jonathan Rodríguez-Fernández2, Liang Zhang1, Ayush Parikh1, Ting Tan1, Jeppe V. Lauritsen2, and Aleksandra Vojvodic1 (*)

A combined density functional theory (DFT) and scanning tunneling microscopy (STM) approach is used to predict the Fe-dopant distribution and clustering of Fe-doped CoO nanoisland. We find an anisotropic Fe-dopant incorporation pattern throughout the nanoisland with the most favorable Fe incorporation site at the oxygen edge and a change in Fe incorporation site preference upon clustering occurring at high Fe-dopant densities.
2019, 12(9): 2364–2372
Published: 1 August 2019