研究目的
To demonstrate the feasibility of small-analyte detection with LDI-MS in both the positive and negative ion modes by developing TiO2 nanowires through wet-corrosion process as solid matrix.
研究成果
TiO2 nanowires synthesized through a wet-corrosion method can effectively serve as a solid matrix for the dual-ion production in LDI-MS, enabling the detection of small analytes in both positive and negative ion modes with high sensitivity and reproducibility.
研究不足
The study focuses on the detection of small analytes and may not be directly applicable to larger molecules or complex mixtures without further optimization.
1：Experimental Design and Method Selection:
TiO2 nanowires were synthesized through a wet-corrosion method with two alkali solutions (NaOH and KOH). The nanowires were characterized for their morphology, crystal structure, and photocatalytic activity.
2：Sample Selection and Data Sources:
Four types of amino acids and four dicarboxylic acids were used as model analytes.
3：List of Experimental Equipment and Materials:
SEM for morphology analysis, FTIR spectroscopy for surface properties, and LDI-MS for ionization efficiency.
4：Experimental Procedures and Operational Workflow:
The photocatalytic performances of the TiO2 nanostructures were estimated via the degradation of methylene blue under UV radiation.
5：Data Analysis Methods:
The kinetics of the methylene blue degradation were analyzed based on the experimental data using the pseudo-first-order reaction.
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