Controlling chirality in growth of single-walled carbon nanotubes (SWNTs) is important for exploiting their practical applications. For long it has been conceptually conceived that the structural control of SWNTs is potentially achievable by fabricating nanoparticle catalysts with proper structures on crystalline substrates via epitaxial growth techniques. Here, we have accomplished epitaxial f...

Selective hydrogenation of 1,3-butadiene is an essential process in the upgrading crude C4 cut from petroleum chemical sector. Catalyst design crucial to achieve a virtually alkadiene-free product while avoiding over-hydrogenating valuable olefins. In addition great industrial relevance, this demanding selectivity pattern renders widely used model reaction discriminate selective catalysts acade...

A NiMgGa-layered double hydroxide (NMG-LDH) is synthesized as an efficient catalyst precursor for dry reforming of methane (DRM). NMG-LDH converted to intermetallic Ni3Ga/MgO upon reduction. Compared a monometallic Ni/MgO prepared from NiMg-LDH, the exhibits high CH4 (∼48%) and CO2 (∼52%) conversions well excellent stability against coking during DRM. The reversible phase transition between Ni3...

We demonstrate electric power generation via the electrooxidation of ethylene glycol (EG) on a series of Fe-group nanoalloy (NA) catalysts in alkaline media. A series of Fe-group binary NA catalysts supported on carbon (FeCo/C, FeNi/C, and CoNi/C) and monometallic analogues (Fe/C, Co/C, and Ni/C) were synthesized. Catalytic activities and product distributions on the prepared Fe-group NA cataly...

Insights into the cobalt sulfide formation upon sulfidation (10 % H2S/H2) of cobalt-based materials with 4 wt CoO supported on alumina or silica were obtained by Quick-X-ray absorption spectroscopy monitoring analysed multivariate curve regression analysis. A common pathway is evidenced involving defective CoS2 species transformed around 200−250 °C Co9S8 species. Upon cooling down under sulfidi...

CO-selective metals (e.g., Ag) on Cu catalysts improve the selectivity of multi-carbon (C 2+ ) products in electrochemical CO 2 reduction. However, origin improvement remains unclear due to convolution tandem and interface effects. Here, Ag@C@Cu core-shell were synthesized, which thin carbon interlayer inhibited direct interaction between Ag while still allowing reduction Ag, thus isolating eff...

Introduction Hydrogen peroxide has always been considered a very interesting and environmentally friendly oxidant with applications confined mainly in unselective sectors such as the paper and textile industry and the treatment of waste waters. More recent applications, related to the discovery of TS-1 molecular sieve, are in the large scale selective oxidation processes for the chemical indust...

   In this research carbon nanotubes were produced by chemical vapor deposition of acetylene over a mixture of iron and cobalt catalysts supported on nanometric TiO2 and the influences of two synthesis parameters: growth temperature and catalyst composition ratio on properties of end-product carbon nanotubes were investigated. The catalytic basis was prepared by wet impregnation ...

Compared with their monometallic counterparts, bimetallic nanoparticles often show enhanced catalytic activity associated with the bimetallic interface. Direct quantitation of catalytic activity at the bimetallic interface is important for understanding the enhancement mechanism, but challenging experimentally. Here using single-molecule super-resolution catalysis imaging in correlation with el...