Biomaterial-assisted synthesis of AgCl@Ag concave cubes with efficient visible-light-driven photocatalytic activity

Abstract

A facile biomaterial-assisted method has been developed to fabricate AgCl@Ag concave cubes. The biomaterial agar gel was used to moderate the reaction process by providing a reaction matrix to mediate the diffusion of reactants and confine the growth of AgCl@Ag concave cubes. The whole reaction process was performed under mild conditions without heat treatment or organic additives. The as-formed AgCl@Ag concave cubes as a photocatalyst exhibit effective activity for photocatalytic degradation of methyl orange (MO) under visible-light irradiation, which is mainly attributed to the surface plasmon resonance (SPR) of Ag nanoparticles.

In situ high-energy synchrotron X-ray diffraction revealing precipitation reaction kinetics of silver ions with mixed halide ions

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] Among all kinds of silver halides, silver chlorobromide (AgCl x Br 1Àx , 0 o x o 1) nanoparticles represent a class of interesting materials that can offer many advantages in comparison with either AgCl or AgBr. For example, the refractive index of AgCl x Br 1Àx can be tuned by adjusting its chemical composition to make them the promising candidates in interesting applications.…”

The highly sensitive determination of serotonin by using gold nanoparticles (Au NPs) with a localized surface plasmon resonance (LSPR) absorption wavelength in the visible region

“…Firstly, green reduction, utilizing organic sources such as plant and animal extracts, has been used to reduce the pollution caused by potentially harmful reductants, which is also the biggest weakness of the reduction method. Wei et al 27 prepared chitosan as a reductant and surfactant for the synthesis of gold and silver nanoparticles, and Hu et al 28 designed an AgCl@Au photocatalyst with a strong SPR effect from the Ag NPs and a large impact from the surfactant effect. However, there are many drawbacks relating to uneven distributions and the related stabilities of composite photocatalysts during further experiments.…”

Morphological Transformation of Silver Nanoparticles from Commercial Products: Modeling from Product Incorporation, Weathering through Use Scenarios, and Leaching into Wastewater

“…In Figure 8, a shift in binding energy was observed for Ag when the nanoparticles were incubated with wastewater. The shift to higher binding energy is caused by the oxidation of the Ag atom [55]. The shift of the binding energy further supports the association of S and Cl with AgNPs observed in EDS are due to the AgNPs going through a chemical transformation [56].…”