Hybrid Photocatalytic Porphyrin-Functionalized UiO-66/BiVO4 for Enhanced CO2 Reduction Using Photosystem II
https://lc.cx/TvLSe4 Harnessing abundant solar energy for sustainable fuel production offers one of the most encouraging strategies to mitigate CO2 emissions. The discovery of novel and efficient photocatalysts to enhance photocatalytic CO2 reduction is important for converting solar energy to fuel. Porphyrin-functionalized UiO-66 on a BiVO4 semiconductor is introduced to convert CO2 via photoreactions. Here, the solar-driven production of carbonaceous feedstocks is reported using a novel photocatalytic material S-scheme UiO-66-TCPP-BiVO4 heterojunction coupled with the photosystem II (PSII) in a microalgae. Coupling PSII with synthetic catalysts improves the efficiency of light-harvesting and the CO2 reduction reaction (CO2RR). Electrochemical impedance spectroscopy, transient photocurrent response, photoluminescence lifetime, X-ray photoelectron spectrometer, transmission electron microscope (TEM), X-ray diffraction (XRD), and electron spin resonance measurements are conducted to determine the complex structural and electronic properties and the photocatalytic performance. In situ Fourier-transform infrared spectra provide the CO2RR processes, revealing the mechanism by detailing intermediate formation and energy pathways. 10.1002/sstr.202500268
Green nanoparticles in agriculture: Enhancing crop growth and stress tolerance
https://lc.cx/vscwMP The rapid rise in demand for sustainable agriculture has fueled interest in innovative, eco-friendly approaches to enhance productivity amid climate change and environmental stressors. Among recent advances, green nanoparticles, nanomaterials synthesised via biological routes, have emerged as promising agents for promoting crop productivity and mitigating abiotic and biotic stresses. Plant-mediated nanoparticles, such as metal and metal oxide nanoparticles, have highlighted their roles as a promising alternative to conventional chemical fertilizers and pesticides, due to their superior effectiveness, minimal toxicity, and eco-friendly nature. The physicochemical properties and the mechanisms by which green nanoparticles improve nutrient use efficiency, stimulate plant hormonal dynamics, and bolster antioxidative defense systems. The impacts of green nanoparticles on germination, root and shoot elongation, photosynthetic efficiency, and nutrient assimilation are well discussed, showcasing their potential in yield enhancement and vegetative growth. Furthermore, this review also elucidates their function in modulating oxidative stress, activating defense pathways, and conferring tolerance against drought, salinity, heavy metals, and pathogen attacks by influencing plant physiological, molecular, and metabolic responses. By integrating recent findings, this review highlights the dual advantage of green nanoparticles: enhancing crop productivity while minimizing environmental footprint. The challenges related to nanoparticle biosafety, large-scale application, and regulatory frameworks are also addressed. The article concludes by outlining future research directions aimed at harnessing green nanotechnology to achieve sustainable crop production and global food security. 10.1016/j.stress.2025.101017