Tensile properties of a boron/nitrogen-doped carbon nanotube–graphene hybrid structure

• Kang Xia,
• Haifei Zhan,
• Ye Wei and
• Yuantong Gu

Beilstein J. Nanotechnol. 2014, 5, 329–336, doi:10.3762/bjnano.5.37

• for the application as fuel cell electrocatalyst, in field-effect transistors, and in lithium batteries. Thus, especially N-doped nanotube–graphene hybrid structures have been envisioned to have promising potential applications in the field of catalysis, gas storage and energy storage [16]. The

The role of oxygen and water on molybdenum nanoclusters for electro catalytic ammonia production

• Jakob G. Howalt and
• Tejs Vegge

Beilstein J. Nanotechnol. 2014, 5, 111–120, doi:10.3762/bjnano.5.11

• to reach the catalyst surface. Small amounts of oxygen present at the molybdenum nanocluster surface, arising from either the electrolyte or from the preparation of the electrocatalyst, should therefore not affect the electrochemical production of ammonia. Conclusion Density functional theory

Design criteria for stable Pt/C fuel cell catalysts

• Josef C. Meier,
• Carolina Galeano,
• Ioannis Katsounaros,
• Jonathon Witte,
• Hans J. Bongard,
• Angel A. Topalov,
• Claudio Baldizzone,
• Stefano Mezzavilla,
• Ferdi Schüth and
• Karl J. J. Mayrhofer

Beilstein J. Nanotechnol. 2014, 5, 44–67, doi:10.3762/bjnano.5.5

• facile hydrogen oxidation reaction (HOR) at the anode side as well as the more sluggish oxygen reduction reaction (ORR) at the cathode side of the fuel cell [2]. The state of the art electrocatalyst for both electrodes are Pt or Pt-alloys dispersed in the form of nanoparticles on a carbon support, in

• can eventually reach an unacceptable level, thus determining the end of fuel cell life as a whole. The degradation of fuel cell catalysts depends on multiple parameters linked to the operation conditions of the cell as well as the structure and composition of the electrocatalyst material. Temperature

• , pH value, potential as well as the humidity and purity of fuel and oxidant feeds are just a few operation parameters that influence the degradation behavior of the catalyst [3][17]. One mode of operation that was found to be particularly harmful for the electrocatalyst are start-up/shut-down

Preparation of NiS/ZnIn₂S₄ as a superior photocatalyst for hydrogen evolution under visible light irradiation

• Liang Wei,
• Yongjuan Chen,
• Jialin Zhao and
• Zhaohui Li

Beilstein J. Nanotechnol. 2013, 4, 949–955, doi:10.3762/bjnano.4.107

• photocatalytic hydrogen evolution. However, the precious metals are expensive and to reduce the cost of renewable hydrogen evolution, it is necessary to explore alternative co-catalysts based on inexpensive transition metals. Our recent studies revealed that MoS2, a good electrocatalyst for hydrogen evolution

• [34], can be an effective co-catalyst in promoting photocatalytic hydrogen evolution over ZnIn2S4 and MoS2/ZnIn2S4 show even superior performance for hydrogen evolution than Pt/ZnIn2S4 [35]. NiS, a p-type semiconductor, is also reported to be a good electrocatalyst for cathodic hydrogen evolution in

• nanocomposite and is compared with that of pure ZnIn2S4 and NiS. Although NiS is a good electrocatalyst for hydrogen evolution [36], no hydrogen was evolved when NiS alone was used as the photocatalyst. Pure ZnIn2S4 only had a very low activity with the hydrogen evolution at a rate of 14.1 μmol/h. However, the