TY - JOUR
T1 - A new approach for the preparation, exfoliation, and intercalation properties of niobium layered sulfide material
AU - Izawa, Kazuyoshi
AU - Ida, Shintaro
AU - Unal, Ugur
AU - Yamaguchi, Tomoki
AU - Matsumoto, Yasumichi
N1 - Funding Information:
This work was supported by the Core Research for Evolutional Science and Technology (CREST) program of the Japan Science and Technology Co. (JST), and a Grant-in-Aid for Scientific Research (No. 15350123) from the Ministry of Education, Culture, Sports, Science, and Technology.
PY - 2008/3
Y1 - 2008/3
N2 - We have developed the new process that can synthesize a layered niobium sulfide under heating a layered oxide with H2S/N2 gas mixture. It was confirmed that K0.34(H2O)xNbS2 was obtained as a single phase and high crystallinity under heating K4Nb6O17·3H2O with the gas at 750°C for 10 h and washing with distilled water. The layered sulfide had the large plate-like shapes that have 50 μm wide length on average. Potassium ions in the interlayer of K0.34(H2O)yNbS2 could be exchanged to hydronium ions by stirring 2M H2SO4. It was also confirmed that tetrabutylammonium could intercalate in interlayer of proton exchanged form. In addition, colloidal solution was obtained after ultrasonication of proton exchanged form. According to the AFM image, the thickness of sulfide nanosheets had 4.2 Å, which roughly corresponded with the thickness of NbS2 single layer.
AB - We have developed the new process that can synthesize a layered niobium sulfide under heating a layered oxide with H2S/N2 gas mixture. It was confirmed that K0.34(H2O)xNbS2 was obtained as a single phase and high crystallinity under heating K4Nb6O17·3H2O with the gas at 750°C for 10 h and washing with distilled water. The layered sulfide had the large plate-like shapes that have 50 μm wide length on average. Potassium ions in the interlayer of K0.34(H2O)yNbS2 could be exchanged to hydronium ions by stirring 2M H2SO4. It was also confirmed that tetrabutylammonium could intercalate in interlayer of proton exchanged form. In addition, colloidal solution was obtained after ultrasonication of proton exchanged form. According to the AFM image, the thickness of sulfide nanosheets had 4.2 Å, which roughly corresponded with the thickness of NbS2 single layer.
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U2 - 10.1080/15533170801926168
DO - 10.1080/15533170801926168
M3 - Article
AN - SCOPUS:47349125379
SN - 2470-1556
VL - 38
SP - 181
EP - 185
JO - Inorganic and Nano-Metal Chemistry
JF - Inorganic and Nano-Metal Chemistry
IS - 2 PART 1
ER -