TY - JOUR
T1 - Ultrathin 1T-phase MoS2 nanosheets decorated hollow carbon microspheres as highly efficient catalysts for solar energy harvesting and storage
AU - Hsiao, Min-Chien
AU - Chang, Chin-Yu
AU - Niu, Li-Juan
AU - Bai, Feng
AU - Li, Lain-Jong
AU - Shen, Hsin-Hui
AU - Lin, Jeng-Yu
AU - Lin, Tsung-Wu
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This research was supported by the Ministry of Science and Technology, Taiwan (MOST 104-2628-M-029 -001-MY3, MOST 104-2738-M-029 -001 and MOST 103-2221-E-036-014-MY3). L.J.L thanks the support from KAUST.
PY - 2017/2/8
Y1 - 2017/2/8
N2 - The composite of MoS2 and hollow carbon sphere (MoS2@HCS) is prepared via a glucose-assisted one pot synthesis. The composite consists of hierarchical spheres with a diameter of 0.5–4 μm and these hollow spheres are decorated with a number of curled and interlaced MoS2 nanosheets. After the composite is subject to the lithium intercalation, the MoS2 is converted from 2H to 1T phase. In this current work, the activities of 1T-MoS2@HCS toward photocatalytic hydrogen evolution and the reduction of I3− in dye-sensitized solar cells (DSCs) are systemically investigated. When evaluated as the photocatalyst for hydrogen evolution, the amount of evolved hydrogen over 1T-MoS2@HCS can reach 143 μmol in 2 h, being 3.6 times higher than as-synthesized 2H-MoS2@HCS. Additionally, the 1T-MoS2@HCS can be employed as the counter electrode (CE) material in DSCs. The DSCs based on 1T-MoS2@HCS CE possesses the power conversion efficiency of 8.94%, being higher than that with 2H-MoS2@HCS CE (8.16%) and comparable to that with Pt CE (8.87%). Our study demonstrates that 1T-MoS2@HCS has a great potential as an inexpensive alternative to Pt catalysts.
AB - The composite of MoS2 and hollow carbon sphere (MoS2@HCS) is prepared via a glucose-assisted one pot synthesis. The composite consists of hierarchical spheres with a diameter of 0.5–4 μm and these hollow spheres are decorated with a number of curled and interlaced MoS2 nanosheets. After the composite is subject to the lithium intercalation, the MoS2 is converted from 2H to 1T phase. In this current work, the activities of 1T-MoS2@HCS toward photocatalytic hydrogen evolution and the reduction of I3− in dye-sensitized solar cells (DSCs) are systemically investigated. When evaluated as the photocatalyst for hydrogen evolution, the amount of evolved hydrogen over 1T-MoS2@HCS can reach 143 μmol in 2 h, being 3.6 times higher than as-synthesized 2H-MoS2@HCS. Additionally, the 1T-MoS2@HCS can be employed as the counter electrode (CE) material in DSCs. The DSCs based on 1T-MoS2@HCS CE possesses the power conversion efficiency of 8.94%, being higher than that with 2H-MoS2@HCS CE (8.16%) and comparable to that with Pt CE (8.87%). Our study demonstrates that 1T-MoS2@HCS has a great potential as an inexpensive alternative to Pt catalysts.
UR - http://hdl.handle.net/10754/622913
UR - http://www.sciencedirect.com/science/article/pii/S0378775317301428
UR - http://www.scopus.com/inward/record.url?scp=85011822000&partnerID=8YFLogxK
U2 - 10.1016/j.jpowsour.2017.01.132
DO - 10.1016/j.jpowsour.2017.01.132
M3 - Article
SN - 0378-7753
VL - 345
SP - 156
EP - 164
JO - Journal of Power Sources
JF - Journal of Power Sources
ER -