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Silver (Ag) nanoparticles can be spontaneously oxidized and present in different oxidized surface phases. The impact of oxidation induced photo absorption property and related photocatalytic activity are still unclear in Ag-decorated semiconductor photocatalysts. Herein, Ag-decorated BiOCl with the metallic Ag0 to oxidized Ag+ were employed to investigate the effect of surface state of Ag on relative photocatalyst properties. A redshift of localized surface plasmon resonance (LSPR) was observed as the Ag0 oxidized to Ag+ and a reversible manipulation was realized in UV light-driven photocatalysis. It is found that the Ag0/BiOCl presents higher photocatalytic activity than Ag+/BiOCl, but this difference is gradually decreasing under UV light irradiation compared with visible light irradiation. A controlled experiment suggests that the reduction of Ag+ under UV light reduced the difference between Ag0/BiOCl and Ag+/BiOCl. The possible mechanism for electron transport and the conversion between Ag+ and Ag0 via the assistance of the photoelectric effect from BiOCl has been elucidated. This photocatalytic reaction assisted reversible tuning the surface state of Ag/BiOCl will open up the possibility of rationally designing Ag-decorated semiconductors for light harvesting.
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Herein, the preparation of numerous bismuth oxychloride/bismuth oxybromide/bismuth oxyiodide/graphene oxide (BiOCl/BiOBr/BiOI/GO) composites is reported. A facile hydrothermal method was employed to s...
The inducement of plant leaf extracts for the synthesis of various nanostructures has intrigued researchers across the earth to explore the mechanisms of biologically active compounds present in the p...
Semiconductor photocatalysis as a desirable technology shows huge potential in environmental remediation and renewable energy generation, but its efficiency is severely restricted by the rapid recombi...
A one-pot synthetic approach to prepare self-assembled BiOI/BiOCl microflowers by a template-free coprecipitation method at room temperature has been developed. The physicochemical structure of BiOI/B...
Conjugated microporous polymers (CMPs) with high surface areas, tunable building blocks and fully conjugated structures have found important applications in optoelectronic. Here we report a new series...
Randomized controlled trial of housing placement assistance for homeless persons with HIV
There is a group of social assistance recipients which have difficulties in entering the labor market and thus remains in a long-term dependency on social assistance. More knowledge about ...
The purpose of this study is to determine whether an internet intervention for alcohol problems is more effective when delivered with assistance from a health care educator via e-mail duri...
Patients receiving a patient assistance program during therapy for Hepatitis C will be enrolled into this study. All patients will receive PegIntron pen and Rebetol according to label and ...
To Assess the Safety of Vitreous surgery with intraocular assistance (VISIA) & to identify and document with video evidence and surgeon's case report forms intraocular maneuvers that are f...
Financial assistance to impoverished persons for the essentials of living through federal, state or local government programs.
Agencies established under PL93-641 to coordinate, conduct, and implement state health planning activities. Two primary responsibilities are the preparation of an annual State Health Plan and giving assistance to the Statewide Health Coordinating Council.
Financial assistance for the impoverished elderly through public funding of programs, services, and individual income supplements.
Federal, state, or local government organized methods of financial assistance.
The quality or state of being wettable or the degree to which something can be wet. This is also the ability of any solid surface to be wetted when in contact with a liquid whose surface tension is reduced so that the liquid spreads over the surface of the solid.