Synthesis of Ag/Ag₂CO₃ heterostructures with high length–diameter ratios for excellent photoactivity and anti-photocorrosion

Abstract

Ag/Ag2CO3 heterostructures with high length–diameter ratios and superior photoactivity and stability are synthesized on a large scale by a simple one-pot method.

A Facile Method To Prepare Novel Ag2O/Ag2CO3 Three-Dimensional Hollow Hierarchical Structures and Their Water Purification Function

“…Ag 2 CO 3 catalysts have drawn more and more attention because of their excellent catalytic activity in organic synthesis , and visible light photodegradation of organic contaminants , in environmental fields. In previous reports, most of Ag 2 CO 3 catalysts were single micron-sized crystalline grains − or nanorods without a particular 3D hierarchical nanostructure, and they displayed deactivated photocatalic properties due to their photocorrosion. , In order to significantly improve Ag 2 CO 3 particle adsorption performance and solve a serious photocorrosion problem, different strategies have been proposed, such as adding inhibitors in the photocatalytic reaction system , or coupling Ag 2 CO 3 with other materials like graphene oxide, Ag, , and UiO-66 . However, these solutions are complicated and expensive.…”

Synthesis, characterization and properties of sulfate-modified silver carbonate with enhanced visible light photocatalytic performance

“…The second assumption seemed to be of minor impact since the catalyst has been found still active in reuse experiments as further discussed in the Section 3.3. The observation of photocatalytic degradation threshold has already been reported upon assays involving pure Ag 2 CO 3 against Methyl Orange (MO) anionic dye, 7,8 and Rhodamine B (RhB) 7,8,18 and Methylene Blue (MB) 7 cationic dyes despite their electrostatic attraction by negatively Ag 2 CO 3 surfaces. In contrast, the most salient result from the use of SO 4 2− -Ag 2 CO 3 photocatalyst was that the relative OG concentration continuously decreased during the photocatalytic test to reach remarkably a total removal of the dye pollutant within 30 min (Fig.…”

“…The fact that SO 4 2− presents an ionic radius of the same order of magnitude than CO 3 (ref. 2–28) should facilitate bulk modification of Ag 2 CO 3 . However, the differences both in crystallographic structure between Ag 2 CO 3 and Ag 3 PO 4 , and in charge transfer expected between the modifying anion (SO 4 2− ) and crystal lattice anion (CO 3 2− ), does not allow to think that the effects of the modification by SO 4 2− should be similar for Ag 2 CO 3 and Ag 3 PO 4 .…”

Dodecahedral hollow multi-shelled Co3O4/Ag:ZnIn2S4 photocatalyst for enhancing solar energy utilization efficiency

“…13 For example, one-dimensional photocatalysts such as nanowires and nanorods extend the diffusion path of photogenerated carriers through their high aspect ratio. 14,15 Two-dimensional materials such as nanosheets provide a larger specic surface area and more active sites with their lamellar structure. 16 Compared with one-dimensional and two-dimensional materials, three-dimensional materials (such as nanoowers, porous/hollow structures, or core-shell structures) can achieve multiple reections of incident light through an open frame, further improving light energy utilization efficiency.…”