研究目的
To develop a novel photoelectrode by incorporating molybdenum sulfide (MoSx) quantum dots on the surface of black silicon for enhanced photoelectrochemical hydrogen evolution.
研究成果
The MoSx/bSi heterostructure photocathode demonstrates superior photoelectrochemical performance for hydrogen evolution, attributed to the efficient light harvesting of bSi and the catalytic activity of MoSx QDs. The study provides a new method for developing silicon-based photoelectrochemical devices.
研究不足
The study does not address the long-term stability of the MoSx/bSi photocathode beyond 8 hours. The scalability of the synthesis process and the cost-effectiveness of the materials used are not discussed.
1：Experimental Design and Method Selection:
The study involves the synthesis of black silicon (bSi) via metal-assisted chemical etching (MACE) and the preparation of MoSx quantum dots (QDs) through a hydrothermal method followed by ultrasonication. The MoSx QDs are then deposited on bSi using a drop-casting technique.
2：Sample Selection and Data Sources:
p-type single-sided polished (100) Si wafers were used as substrates. The samples were characterized using XRD, FE-SEM, TEM, EDS, XPS, UV-vis spectrophotometry, and ICP-MS.
3：List of Experimental Equipment and Materials:
Equipment includes a diffractometer (D/MAX2500V), FE-SEM (SU8020), TEM (JEM-2100F), XPS (ESCALAB 250), UV-vis spectrophotometer (UV-3600), and ICP-MS (7500). Materials include Na2MoO4·H2O, H4SiO4(W3O9)4, CH3CSNH2, and NMP.
4：0). Materials include Na2MoO4·H2O, H4SiO4(W3O9)4, CH3CSNH2, and NMP.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The bSi was synthesized by cleaning Si wafers, etching with AgNO3 solution, and removing Ag dendrites. MoSx QDs were synthesized hydrothermally, then deposited on bSi via drop-casting. The photoelectrochemical performance was evaluated using a three-electrode system under simulated sunlight.
5：Data Analysis Methods:
The photoelectrochemical performance was analyzed using linear scan voltammetry, EIS, Mott-Schottky measurements, and gas chromatography for hydrogen evolution rate.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
