Publications by authors named "Qinzhu Li"
Article Synopsis
- MXenes, which are 2D transition metal compounds, show potential for use in non-noble-metal catalysts for hydrogen evolution reactions by maximizing their large surface area.
- This study introduces a composite material, Au-TiCO, created by synthesizing oxygen-functionalized TiCT MXene and adding gold nanoparticles, enhancing electron transfer and catalytic activity.
- The results indicate improved catalytic performance with an overpotential of 62 mV, supported by electron interactions between Au NPs and MXene, as confirmed by advanced microscopy and theoretical calculations.
The solar-driven overall water splitting (2HO→2H + O) is considered as one of the most promising strategies for reducing carbon emissions and meeting energy demands. However, due to the sluggish performance and high H cost, there is still a big gap for the current photocatalytic systems to meet the requirements for practical sustainable H production. Economic feasibility can be attained through simultaneously generating products of greater value than O, such as hydrogen peroxide (HO, 2HO→H + HO).
View Article and Find Full Text PDFSolar energy is an ideal clean and inexhaustible energy source. Solar-driven formic acid (FA) dehydrogenation is one of the promising strategies to address safety and cost issues related to the storage, transport, and distribution of hydrogen energy. For FA dehydrogenation, the O-H and C-H cleavages are the key steps, and developing a photocatalyst with the ability to break these two bonds is critical.
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- Proton exchange membrane fuel cells (PEMFCs) are seen as a promising alternative to conventional fuel cells due to their higher energy density, lower environmental impact, and improved efficiency.
- The main challenge for PEMFCs is the inefficient oxygen reduction reaction (ORR) at the cathode, which hampers their broader implementation, highlighting the urgent need for affordable and effective ORR catalysts.
- This work reviews recent developments in ORR catalysts, focusing on their performance at the membrane electrode assembly (MEA) level to provide insights for the design and application of more efficient catalysts in PEMFCs.
This work described a novel method for the synthesis of high-ferromagnetism nanoparticles (Fe3O4/CNTs) to efficiently remove Cr(VI) from aqueous solution. The Fe3O4/carbon nanotubes (CNTs) were prepared by in situ reduction with post-oxidation method by using cheap and environmentally friendly precursor under mild condition. Magnetic hysteresis loops revealed that Fe3O4/CNTs had superior saturation magnetization (152 emu/g), enabling the highly efficient recovery of Fe3O4/CNTs from aqueous solution by magnetic separation at low magnetic field gradients.
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