Promoter-free synthesis of monolayer MoS2 by chemical vapour deposition

CrystEngComm ◽  
2018 ◽  
Vol 20 (30) ◽  
pp. 4249-4257 ◽  
Author(s):  
Paulraj Gnanasekar ◽  
Dharmaraj Periyanagounder ◽  
Anbarasan Nallathambi ◽  
Sadhasivam Subramani ◽  
Manivel Palanisamy ◽  
...  
Keyword(s):  
Chemical Vapour Deposition ◽  
Large Scale ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Controlled Growth ◽  
Monolayer Mos2 ◽  
Semiconductor Substrates ◽  
Device Applications

Piranha treatment provides an ideal platform for the controlled growth of large-scale monolayer MoS2 on dielectric and semiconductor substrates for device applications.

Large-scale synthesis of single-crystal molybdenum trioxide nanobelts by hot-wire chemical vapour deposition

2015 ◽  
Vol 619 ◽  
pp. 406-410 ◽  
Author(s):  
Jianjun Chen ◽  
Mingming Wang ◽  
Xin Liao ◽  
Zhaoxiang Liu ◽  
Judong Zhang ◽  
...  
Keyword(s):  
Single Crystal ◽  
Chemical Vapour Deposition ◽  
Large Scale ◽  
Vapour Deposition ◽  
Molybdenum Trioxide ◽  
Chemical Vapour ◽  
Hot Wire ◽  
Large Scale Synthesis

Large scale synthesis of zinc oxide nanorods by homogeneous chemical vapour deposition and their characterisation

2007 ◽  
Vol 201 (22-23) ◽  
pp. 9200-9204 ◽  
Author(s):  
Revathi Bacsa ◽  
Yolande Kihn ◽  
Marc Verelst ◽  
Jeannette Dexpert ◽  
Wolfgang Bacsa ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Chemical Vapour Deposition ◽  
Large Scale ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Zinc Oxide Nanorods ◽  
Oxide Nanorods ◽  
Homogeneous Chemical ◽  
Large Scale Synthesis

Large scale tapered GaN rods grown by chemical vapour deposition

2006 ◽  
Vol 290 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Hailin Qiu ◽  
Chuanbao Cao ◽  
Xu Xiang ◽  
Yunhong Zhang ◽  
Jie Li ◽  
...  
Keyword(s):  
Chemical Vapour Deposition ◽  
Large Scale ◽  
Vapour Deposition ◽  
Chemical Vapour

Towards the Large-Scale Synthesis of Carbon Nanotubes in Fluidised Beds

2008 ◽  
Vol 8 (5) ◽  
pp. 2450-2457 ◽  
Author(s):  
A. T. Harris ◽  
C. H. See ◽  
J. Liu ◽  
O. Dunens ◽  
K. Mackenzie
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapour Deposition ◽  
Large Scale ◽  
Vapour Deposition ◽  
Chemical Vapour ◽  
Transition Metal Catalysts ◽  
Synthesis Process ◽  
Synthesis Methods ◽  
Fluidised Bed ◽  
Large Scale Synthesis

Carbon nanotubes (CNTs) are a form of crystalline carbon with extraordinary properties, making them valuable in a broad range of applications. However, the lack of suitable large-scale manufacturing techniques, which we define as being of the order 10000 tonnes per annum, continues to inhibit their widespread use. Of the three established synthesis methods for CNTs: (i) chemical vapour deposition (CVD), (ii) laser ablation, and (iii) arc discharge, CVD techniques show the greatest promise for economically viable, large-scale synthesis. In particular, the fluidised bed CVD (FBCVD) technique, where the CVD reaction occurs within a fluidised bed of catalyst particles, has the potential to produce high quality CNTs, inexpensively, in large quantities. In this work we report on the development of a catalytic chemical vapour deposition process, using batch fluidised bed reactors, for the synthesis of straight and spiral carbon nanotubes at pilot scale (up to 1 kg/hr). We believe this to be the first report of the synthesis of spiral carbon nanotubes using fluidised bed CCVD. Iron, nickel and cobalt transition metal catalysts supported on non-porous alumina substrates were fluidised in a mixture of nitrogen, hydrogen and ethylene at temperatures between 550 and 800 C for between 15 and 90 minutes. Nanotube yield was inferred from thermogravimetric analysis and the quality and size of the CNTs from transmission electron microscopy. Conflicting information in the literature about the influence of synthesis parameters on CNT properties suggests that further investigation is necessary to understand the synthesis process at a fundamental level, i.e., independent of reactor design and operation.

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