Visible light photocatalytic performance of Ag2O/ZnCr-LDH nanocomposite

Akbarzadeh, Elham; Rasteh, Mahsa; Gholami, Mohammad Reza

doi:10.1016/j.cplett.2020.137558

Cited by 10 publications

(3 citation statements)

References 39 publications

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“…[24][25][26] LDHs possess brucite-type structures that result in a unique shape, and they are non-toxic with a tunable cation structure, anion exchange capacity at the interlayers, huge surface area, increased stability, and satisfactory flexibility. [27][28][29][30] In recent times, transition metal-based LDHs have functioned as excellent electrocatalysts in sensing applications. 31,32 Herein, we synthesized zinc-chromium-LDH (ZC), which is an n-type semiconductor material that acquires many redox sites with satisfactory catalytic activity and employed as an electrocatalyst.…”

Section: Introductionmentioning

confidence: 99%

3D architectured zinc–chromium layered double hydroxide with nickel cobalt sulfide composite for the electrochemical detection of ronidazole

Priya,

Chen,

Chen

et al. 2024

Environ. Sci.: Nano

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Section: Introductionmentioning

confidence: 99%

3D architectured zinc–chromium layered double hydroxide with nickel cobalt sulfide composite for the electrochemical detection of ronidazole

Priya,

Chen,

Chen

et al. 2024

Environ. Sci.: Nano

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“…The acid leaching solution is converted into inorganic nano materials to realize the resource utilization of metal elements. Among them, layered double hydroxides (LDHs) (general formula can be expressed as [14] [M 1‐X 2+ M X 3+ (OH) 2 ] x+ (A n− ) x/n ⋅mH 2 O, where M 2+ is divalent metal, M 3+ is trivalent metal, and (A n− ) is positive anion) [14–15] is the current research hotspot. It is reported to be a potential adsorbent for the removal of anionic contaminants from wastewater [16] .…”

Section: Introductionmentioning

confidence: 99%

Superb Adsorption of Congo Red by Zn‐Cr Layered Bimetallic Hydroxides Prepared from Electroplated Sludge

Kong

Xie

et al. 2022

ChemistrySelect

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It is a challenge to achieve the harmless treatment and resourceful use of various metal elements in electroplating sludge, and converting them into functional materials has become an important technological direction. Based on the existence of various metal ions in electroplating sludge, sodium oleate intercalated Zn−Cr‐LDHs (Zn−Cr‐layered double hydroxides) were prepared by two‐phase solution heating method. The adsorption process of the prepared LDHs for Congo red (CR) in aqueous solution can be described by Langmuir isotherm model and pseudo‐second‐order kinetic model and the maximum adsorption capacity is 2750.43 mg/g. The results of TEM and XPS show that the adsorption mechanism is dominated by electrostatic adsorption, ion exchange process, hydrogen bonding interaction and surface complexation. Therefore, this paper provides a strategy for recovering metal elements from electroplating sludge to prepare LDHs adsorption materials with ultra‐high adsorption capacity.

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“…[16,17] In this regard, among the different detailed photocatalytic materials, layered materials like ZnCr layered two fold hydroxide (LDH) are viewed as one of the effective photocatalysts due to their appropriate redox potential and huge light-accumulation capacities. [18] The capacity of ZnCr LDH to absorb visible spectrum is related with inter electronic excitation like metal-to-metal charge transition (MMCT) through oxo-connected bimetallic linkage. However, the poor visible light response and high recombination of photoinduced electron-hole pairs generally result in low photocatalytic efficiency of bare LDH.…”

Section: Introductionmentioning

confidence: 99%

Efficient ZnCr LDH/monoclinic‐WO₃ composites for Degradation of Tetracycline under Visible Light

2022

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Recently, efficient removal of antibiotics like Tetracycline (TC) from wastewater is emerging as a crucial problem. However, low adsorption capacity and high cost of photocatalysts limit their utility. In this context, monoclinic tungsten trioxide (WO3) loaded ZnCr layered double hydroxide (LDH) composites (ZnCr‐xWO3 x=10 and 20 %) are prepared by co‐precipitation method and characterized by several techniques viz. X‐Ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Raman, Photoluminescence (PL), Field‐Emission Scanning Electron Microscopy (FE‐SEM), Brunauer Emmett Teller (BET), Diffuse Reflectance Spectroscopy (DRS) and Dynamic Light Scattering (DLS). The XRD pattern confirms the formation of ZnCr LDH and its composites with monoclinic‐WO3. Bond vibrations and phase transitions were explored with the help of FTIR and Raman spectra. The BET analysis for ZnCr LDH and ZnCr‐10WO3 composite shows surface area as 27.439 m2/g and 47.691 m2/g. The higher photocatalytic performance of the composites formed is due to enhanced specific surface area and better separation efficiency of photo‐generated electrons and holes through conventional class II hetero junction between ZnCr LDH and monoclinic‐WO3. The kinetics studies performed shows better fit for pseudo first order reaction with maximum degradation efficiency and rate constant for ZnCr‐10WO3 (i. e., 86.7 % and 1.5×10−2 min−1).

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Visible light photocatalytic performance of Ag2O/ZnCr-LDH nanocomposite

Cited by 10 publications

References 39 publications

3D architectured zinc–chromium layered double hydroxide with nickel cobalt sulfide composite for the electrochemical detection of ronidazole

3D architectured zinc–chromium layered double hydroxide with nickel cobalt sulfide composite for the electrochemical detection of ronidazole

Superb Adsorption of Congo Red by Zn‐Cr Layered Bimetallic Hydroxides Prepared from Electroplated Sludge

Efficient ZnCr LDH/monoclinic‐WO₃ composites for Degradation of Tetracycline under Visible Light

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Visible light photocatalytic performance of Ag2O/ZnCr-LDH nanocomposite

Cited by 10 publications

References 39 publications

3D architectured zinc–chromium layered double hydroxide with nickel cobalt sulfide composite for the electrochemical detection of ronidazole

3D architectured zinc–chromium layered double hydroxide with nickel cobalt sulfide composite for the electrochemical detection of ronidazole

Superb Adsorption of Congo Red by Zn‐Cr Layered Bimetallic Hydroxides Prepared from Electroplated Sludge

Efficient ZnCr LDH/monoclinic‐WO3 composites for Degradation of Tetracycline under Visible Light

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Efficient ZnCr LDH/monoclinic‐WO₃ composites for Degradation of Tetracycline under Visible Light