Topic
Silver chromate
About: Silver chromate is a research topic. Over the lifetime, 165 publications have been published within this topic receiving 2286 citations. The topic is also known as: silver chromate.
Papers published on a yearly basis
1 / 2
Papers
TL;DR: In this paper, a ternary Ag2CrO4/g-C3N4/GO composite photocatalyst was fabricated for photocatalytic CO2 reduction into methanol (CH3OH) and methane (CH4).
Abstract: Graphitic carbon nitride (g-C3N4)-based photocatalysts holds great promise on photocatalytic CO2 conversion into solar fules; however, the efficiency of pristine g-C3N4 is currently limited by its poor visible light absorption and rapid charge recombination. Employing silver chromate (Ag2CrO4) nanoparticles as photosensitizer and graphene oxide (GO) as cocatalyst, a novel ternary Ag2CrO4/g-C3N4/GO composite photocatalyst was fabricated for photocatalytic CO2 reduction into methanol (CH3OH) and methane (CH4). The ternary composites exhibited an enhanced CO2 conversion activity with a turnover frequency of 0.30 h–1, which was 2.3 times that of pristine g-C3N4 under simulated sunlight irradiation. The enhanced photocatalytic activity was due to broadened light absorption, higher CO2 adsorption and more efficient charge separation. Specifically, due to the matched band structure and appropriate loading ratio of Ag2CrO4, a direct Z-scheme Ag2CrO4/g-C3N4 heterojunction is formed, driven by the internal electric field across the Ag2CrO4/g-C3N4 interface. The formation of the direct Z-scheme heterojunction is substantiated by radical scavenging experiments and density functional theory calculations, and it benefits the photocatalytic reaction by accelerating the charge separation and improving the redox ability. Furthermore, GO cocatalyst not only promotes the charge transfer but also provides plentiful CO2 adsorption and catalytic sites. This work exemplifies the facile development of ternary g-C3N4-based photocatalysts with high CO2-conversion activity by coupling a small amount of Ag-based photosensitizer and metal-free cocatalyst.
519 citations
TL;DR: The cytological details of the de-impregnated neurons can be discerned and their synaptic relationships can be determined.
Abstract: A procedure is described by which neurons impregnated by the rapid Golgi method can be de-impregnated and their fine structure studied in the electron microscope. Brains are fixed by perfusion with buffered solutions containing formaldehyde and glutaraldehyde, and pieces are then impregnated by a rapid Golgi method. Sections, 150–200 μm thick, are cut from the impregnated blocks and immersed in glycerol so that sections containing suitably impregnated neurons can be selected under the light microscope. Such sections are immersed in gold chloride followed by oxalic acid. The original impregnation deposit of silver chromate is then removed with sodium thiosulphate. This process of de-impregnation leaves the originally impregnated neurons still visible in the light microscope for they now contain a deposit of gold. In the electron microscope this deposit is apparent as fine particles that mark the profiles of the de-impregnated neurons, but the deposit is such that it does not interfere with the fine structure which is remarkably well preserved. Thus, the cytological details of the de-impregnated neurons can be discerned and their synaptic relationships can be determined.
442 citations
TL;DR: In this paper, a ternary composite photocatalyst consisting of graphitic carbon (g-C 3 N 4 ), graphene oxide (GO) and Ag 2 CrO 4 was successfully synthesized through one-step chemical precipitation route.
Abstract: In this work, a ternary composite photocatalyst consisted of graphitic carbon (g-C 3 N 4 ), graphene oxide (GO) and Ag 2 CrO 4 was successfully synthesized through one-step chemical precipitation route. The GO/Ag 2 CrO 4 /g-C 3 N 4 (GO/ACR/CN) nanocomposite exhibited superior photocatalytic performance towards dyes (rhodamine (RhB) and methylene blue (MB)) and two other refractory pollutants (phenol and oxytetracycline) degradation under visible light irradiation. The efficient photo-induced electron-hole pairs separation, multi-step charge transfer and enhanced visible light absorption should be concluded as the synergistic effects among three components, resulting in the improved photoactivity. The decreased degradation efficiency of RhB (MB) over bare ACR was about 25.74% (43.22%) after four times cycles, while insignificant loss was perceived over GO/ACR/CN. The corresponding anti-photocorrosion property was further confirmed by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). For in-depth insight into practical applications, the effects of initial concentration and different water sources were also taken into discussions. This work demonstrated that rational and design of ternary nanocomposites could provide a new approach for the development of more efficient visible-light photocatalysts for wastewater treatment and environmental remediation.
177 citations
TL;DR: Silica in plants can be stained by silver chromate, methyl red, and a colorless crystal violet lactone which are adsorbed by the silanol groups resulting in red-brown, red- and blue colors, respectively.
Abstract: Silica in plants can be stained by silver chromate, methyl red, and a colorless crystal violet lactone which are adsorbed by the silanol groups resulting in red-brown, red, and blue colors, respectively. Specialized silica cells in grasses can also be detected through polarization colors due to form birefringence. Silica in the bulliform and silica cells of rice leaves is amorphous and is made up of 1-2-nm particles aggregating into 2.5 X 0.4-,um rods with oblique ends.
82 citations
TL;DR: Inspired by photosynthesis, Ag2CrO4 nanoparticles-decorated g-C3N4 nanosheet is reported as an efficient photocatalyst for hydrogen evolution reaction (HER) with methanol as sacrificial agent and nanocomposites present enhanced photocatalytic activity and stability in the H2 evolution of water splitting.
Abstract: Due to low charge separation efficiency and poor stability, it is usually difficult for single-component photocatalysts such as graphitic carbon nitride (g-C3N4) and silver chromate (Ag2CrO4) to fulfill photocatalytic hydrogen production efficiently. Z-scheme charge transport mechanism that mimics the photosynthesis in nature is an effective way to solve the above problems. Inspired by photosynthesis, we report Ag2CrO4 nanoparticles-decorated g-C3N4 nanosheet as an efficient photocatalyst for hydrogen evolution reaction (HER) with methanol as sacrificial agent. The formation of Z-scheme g-C3N4/Ag2CrO4 nanosheets photocatalysts could inhibit the recombination of photogenerated electron-hole pairs, promote the generation of hydrogen by photosplitting of water. The experiment results indicate that g-C3N4/Ag2CrO4 nanocomposites present enhanced photocatalytic activity and stability in the H2 evolution of water splitting. And the nanocomposites g-C3N4/Ag2CrO4(23.1%) show the 14 times HER efficiency compared to that of bare g-C3N4.
71 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 2 |
| 2019 | 3 |
| 2018 | 8 |
| 2017 | 4 |
| 2016 | 3 |
| 2015 | 2 |