Mercury oxide as an efficient photocatalyst for degradation of rhodamine B dye under visible-light irradiation

Li, Datang; Li, Jiayin; Tang, Jianting

doi:10.1016/j.solidstatesciences.2016.10.005

Cited by 9 publications

(5 citation statements)

References 25 publications

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“…These peaks are indicatives of the presence of mercury alloy of Cu 6 Hg 7 as well as the existence of HgO, CuO, Hg and Cu in the amalgam prepared as the electrode material in this study. The observed peaks for this compound are in excellent agreement with the reported results [54,55] . The presence of mercury and copper oxide species alongside mercury/copper alloy may provide highly active surface sites for the adsorption of the analyte or its electrocatalysis during electrochemical experiments done.…”

Section: Resultssupporting

confidence: 88%

Preparation of a New Copper/Mercury‐Based Amalgam Electrode with Minimal Mercury Content and Its Application for the Determination of Azathioprine in Biological Fluids

2021

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Herein, a new copper/mercury‐based amalgam electrode with 45 wt % copper was introduced. An amalgam electrode with the lowest mercury content among all amalgam electrodes, reported so far,was introduced. The method of making and activating the electrode was investigated and the working conditions were established. The as‐prepared electrode was employed to determine azathioprine(Aza) using differential pulse adsorptive stripping voltammetry (DPASV) method. The required factors were considered for the electrode voltammetric response to evaluate and optimize Aza level. The proper response of this electrode was obtained in Brinton‐Robinson buffer(BRB) (pH 2) at −0.15 V for 200 seconds. The electrode response to the target compound was linear in the concentration range from 0.04 to 1.0 μM. The detection limit was found to be about 1.6×10−8 M. The relative standard deviation (RSD) for 5 determinations was obtained to be about 3.5 % (the average of RSDs calculated for all concentrations, represented in the calibration curve). The method was successfully applied for Aza determination in plasma and urine samples which led to satisfactory results. It can be concluded that the presence of high levels of potential interfering agents such as ascorbic acid and cysteine did not affect the Aza determination.

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Section: Resultssupporting

confidence: 88%

Preparation of a New Copper/Mercury‐Based Amalgam Electrode with Minimal Mercury Content and Its Application for the Determination of Azathioprine in Biological Fluids

2021

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“…DSA anode achieves performance with high chemical stability even at high current densities, has a longer life, is commercially available, and at low cost [45]. Semiconductor photocatalysts have gotten expanding attention owing to their application in natural contamination treatment [46].…”

Section: Physical Methodsmentioning

confidence: 99%

Various Adsorbents for Removal of Rhodamine B Dye: A Review

Saigl

2021

Indones. J. Chem.

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Lately, there has been an increase in dye manufacturing, resulting in increased environmental pollution. Recent studies show a wide availability of usage adsorbents, including banana peels, potatoes, algae, etc. Food and Drug Administration prohibited the use of Rhodamine B (RhB) for its toxicity and harmful effects. Therefore, this study presents a wide range of non-conventional low-cost alternative adsorbents to remove RhB dye from wastewater. It has been observed that the mechanism of the dye adsorption is focused on kinetics, isotherm, and thermodynamics models, which depend on the chemical nature of the materials and various physicochemical experimental conditions such as solution pH, initial dye concentration, adsorbent dosage, and temperature of the system. The kinetic data of adsorption of RhB dye usually follow the pseudo-first-order and pseudo-second-order kinetic models. Several studies revealed that Langmuir and Freundlich adsorption isotherm models are frequently used to evaluate the adsorption capacity of the adsorbents. Furthermore, thermodynamic examination showed that RhB adsorption was endothermic and unconstrained in nature. Thus, both photocatalytic degradation and adsorption methods offer good potential to remove RhB dye from industrial effluents. The work is in progress to evaluate the possibility of using other modified waste biomass for industrial pollution control.

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“…At the same time, the desire to improve the functional efficiency of the materials obtained makes the researcher use, in the photocatalyst synthesis, substances based on heavy and toxic elements with high eco-risks to the habitat of animals and humans. Thus, for instance, well known are the works for creating high-efficiency photocatalysts to purify water from organic pollutants with use of compounds of thallium [10][11][12][13], mercury [14][15][16], lead [17][18][19], cadmium [20,21], uranium [22], and thorium [23]. The most promising solution to this problem is the application of the "green" synthesis method when receiving the compounds under study.…”

Section: Introductionmentioning

confidence: 99%

Study of the Composition and Properties of Bivalve Mollusk Shells as Promising Bio-Indifferent Materials for Photocatalytic Applications (Example of Practical Use)

Zaitsev,

Astapov

2023

Catalysts

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This paper studies the composition and properties of shells of bivalve mollusks (Crenomytilus grayanus, Callista brevisiphonata, and Mizuhopecten yessoensis) from coastal discharges with a view to the possibility of their use in photocatalytic water treatment systems. The clam shells are considered in terms of application in the form of a powder material as a precursor for creating photocatalysts, and also as a carrier of photocatalytic coatings. It was shown that the main phase composing the shell material was calcium carbonate in two crystallographic modifications—calcite and aragonite. The presence of inorganic impurities in all studied clam shells did not exceed one mass percent. The main share was made up of elements included in the composition of calcium carbonate, which confirmed the high bio-indifference of the materials under study. Depending on the physiological and environmental features of the structure of clam shells, different contents of the organic component in their composition were observed. The granulometric characteristics of crushed clam shells (average diameter, specific surface area, and distribution modality) were studied. It was shown that the maximum values of bending strength of 5 MPa and compressive strength of 2 MPa are characterized by Mizuhopecten yessoensis shells with the lowest porosity of 2.91%. The features of sorption and photosorption processes of both whole and crushed shells in relation to four organic dyes at different temperatures and degrees of illumination were studied. Based on crushed shells of Mizuhopecten Yessoensis and titanium dioxide, functional materials (CaxTiyOz) were obtained, and their morphology and photocatalytic properties were studied. An example of the practical use of clam shells as a carrier of a photocatalytic coating is given.

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Mercury oxide as an efficient photocatalyst for degradation of rhodamine B dye under visible-light irradiation

Cited by 9 publications

References 25 publications

Preparation of a New Copper/Mercury‐Based Amalgam Electrode with Minimal Mercury Content and Its Application for the Determination of Azathioprine in Biological Fluids

Preparation of a New Copper/Mercury‐Based Amalgam Electrode with Minimal Mercury Content and Its Application for the Determination of Azathioprine in Biological Fluids

Various Adsorbents for Removal of Rhodamine B Dye: A Review

Study of the Composition and Properties of Bivalve Mollusk Shells as Promising Bio-Indifferent Materials for Photocatalytic Applications (Example of Practical Use)

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