The electrophoretic mobility of positively charged,cylindrically shaped α-FeO OH particles dispersed in dilute sodium chloride solutions was measured at 25℃,as a function of ionic strength and pH using microelectrop...The electrophoretic mobility of positively charged,cylindrically shaped α-FeO OH particles dispersed in dilute sodium chloride solutions was measured at 25℃,as a function of ionic strength and pH using microelectrophoresis apparatus. The mobility data were processed through a number of selected relationships that represent various stages of understanding of electrophoretic theory,culminating in the determination of values of the electrokinetic charge and zeta potential of the colloid α-FeO OH/NaCl aq.展开更多
Solar-driven energy conversion is a promising technology for a sustainable energy future and environmental remediation, and an efficient catalyst is a key factor. Recently, metal halide perovskites(MHPs) have emerged ...Solar-driven energy conversion is a promising technology for a sustainable energy future and environmental remediation, and an efficient catalyst is a key factor. Recently, metal halide perovskites(MHPs) have emerged as promising photocatalysts due to their exceptional photoelectronic properties and low-cost solution processing, enabling successful applications in H_(2) evolution, CO_(2) reduction, organic synthesis, and pollutant degradation. Despite these successes, the practical applications of MHPs are limited by their water instability. In this review, the recently developed strategies driving MHPcatalyzed reactions in aqueous media are outlined. We first articulate the structures and properties of MHPs, followed by elaborating on the origin of instability in MHPs. Then, we highlight the advances in solar-driven MHPbased catalytic systems in aqueous solutions, focusing on developing external protection strategies and intrinsically water-stable MHP materials. With each approach offering peculiar sets of advantages and challenges, we conclude by outlining potentially promising opportunities and directions for MHP-based photocatalysis research in aqueous conditions moving forward. We anticipate that this timely review will provide some inspiration for the design of MHPbased photocatalysts, manifestly stimulating their applications in aqueous environments for solar-to-chemical energy conversion.展开更多
文摘The electrophoretic mobility of positively charged,cylindrically shaped α-FeO OH particles dispersed in dilute sodium chloride solutions was measured at 25℃,as a function of ionic strength and pH using microelectrophoresis apparatus. The mobility data were processed through a number of selected relationships that represent various stages of understanding of electrophoretic theory,culminating in the determination of values of the electrokinetic charge and zeta potential of the colloid α-FeO OH/NaCl aq.
基金City University of Hong Kong,Grant/Award Number:SIRG 7020022Hong Kong Research Grant Council(RGC),Grant/A ward Numbers:GRFCityU 11305419,GRF CityU 11306920,GRF CityU 11308721,GRF CityU11316522。
文摘Solar-driven energy conversion is a promising technology for a sustainable energy future and environmental remediation, and an efficient catalyst is a key factor. Recently, metal halide perovskites(MHPs) have emerged as promising photocatalysts due to their exceptional photoelectronic properties and low-cost solution processing, enabling successful applications in H_(2) evolution, CO_(2) reduction, organic synthesis, and pollutant degradation. Despite these successes, the practical applications of MHPs are limited by their water instability. In this review, the recently developed strategies driving MHPcatalyzed reactions in aqueous media are outlined. We first articulate the structures and properties of MHPs, followed by elaborating on the origin of instability in MHPs. Then, we highlight the advances in solar-driven MHPbased catalytic systems in aqueous solutions, focusing on developing external protection strategies and intrinsically water-stable MHP materials. With each approach offering peculiar sets of advantages and challenges, we conclude by outlining potentially promising opportunities and directions for MHP-based photocatalysis research in aqueous conditions moving forward. We anticipate that this timely review will provide some inspiration for the design of MHPbased photocatalysts, manifestly stimulating their applications in aqueous environments for solar-to-chemical energy conversion.
