TY - JOUR
T1 - In-situ High-Resolution Transmission Electron Microscopy and X-ray Diffraction Studies on Nanostructured β-SiC and Its Promising Feature for Photocatalytic Hydrogen Production
AU - Hidayat, Nurul
AU - Fuad, Abdulloh
AU - Mufti, Nandang
AU - Kultsum, Ummu
AU - Fibriyanti, Anggun Amalia
AU - Sunaryono,
AU - Prihandoko, Bambang
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019
Y1 - 2019
N2 - The ruin of energy and environmental pollution has led to the pursuit of novel technologies for green energy productions. For hydrogen energy itself, the search for the photocatalytic-based nanostructured β-SiC is one of the main research focus during the last few years. Herein, we reported the successful magnesiothermic reduction at low temperature, i.e., 700 °C, using an argon gas tubular furnace to fabricate β-SiC with a particle size below 10 nm. The X-ray diffraction (XRD) data collection and Rietveld refinement showed the single phase of moissanite β-SiC formation having cubic structure with lattice constants of a = b = c = 4.3523(50) A and α = β = γ = 90°. The formation of the nanostructured β-SiC was well confirmed by the high-resolution transmission microscopy (HRTEM) image. The equivalent crystallite size produced by the XRD profile analysis was 4.2(8) nm, and extracted from the HRTEM image was about 6 nm. The d-spacing for (111) plane met a reliable agreement between the XRD and HR-TEM data. The energy dispersive X-ray spectroscopy in scanning transmission electron microscopy (STEM-EDS) also brought a good capture for the nearly 50:50 concentration of Si:C in our sample. Furthermore, in-situ heating experiments via HR-TEM were also conducted. In brief, carbon nanolayers were initiated on the surface of the nanostructured β-SiC. All these fine-tuned crystallographic properties assigned the as synthesized β-SiC to be the promising candidate for photocatalytic hydrogen production.
AB - The ruin of energy and environmental pollution has led to the pursuit of novel technologies for green energy productions. For hydrogen energy itself, the search for the photocatalytic-based nanostructured β-SiC is one of the main research focus during the last few years. Herein, we reported the successful magnesiothermic reduction at low temperature, i.e., 700 °C, using an argon gas tubular furnace to fabricate β-SiC with a particle size below 10 nm. The X-ray diffraction (XRD) data collection and Rietveld refinement showed the single phase of moissanite β-SiC formation having cubic structure with lattice constants of a = b = c = 4.3523(50) A and α = β = γ = 90°. The formation of the nanostructured β-SiC was well confirmed by the high-resolution transmission microscopy (HRTEM) image. The equivalent crystallite size produced by the XRD profile analysis was 4.2(8) nm, and extracted from the HRTEM image was about 6 nm. The d-spacing for (111) plane met a reliable agreement between the XRD and HR-TEM data. The energy dispersive X-ray spectroscopy in scanning transmission electron microscopy (STEM-EDS) also brought a good capture for the nearly 50:50 concentration of Si:C in our sample. Furthermore, in-situ heating experiments via HR-TEM were also conducted. In brief, carbon nanolayers were initiated on the surface of the nanostructured β-SiC. All these fine-tuned crystallographic properties assigned the as synthesized β-SiC to be the promising candidate for photocatalytic hydrogen production.
UR - http://www.scopus.com/inward/record.url?scp=85065645606&partnerID=8YFLogxK
U2 - 10.1088/1757-899X/515/1/012012
DO - 10.1088/1757-899X/515/1/012012
M3 - Conference article
AN - SCOPUS:85065645606
SN - 1757-8981
VL - 515
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012012
T2 - International Conference on Condensed Matters and Advanced Materials 2018, IC2MAM 2018
Y2 - 5 September 2018
ER -