Ternary layered double hydroxides (LDH) based on Cu- substituted Zn Al for the design of efficient antibacterial ceramics

Mishra, Geetanjali; Dash, Barsha; Pandey, Satish Kumar; Sethi, Diptipriya

doi:10.1016/j.clay.2018.08.021

Cited by 27 publications

(18 citation statements)

References 44 publications

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“…The Cu and Al distributions on the surface of the as-prepared product were evaluated by EDS mapping ( Figure 2 a), in which Cu and Al were tightly doped, suggesting homogeneous dispersion. The M(II) or M(III) molar ratio x in the range of 0.2–0.33 about the LDH general formula ([M 2+ 1−x M 3+ x (OH) 2 ] x+ (A n− ) x/n mH 2 O) is usually considered the LDHs more suitable for stable structure and composition, so the elemental ratio 27.73% of as-prepared LDH was satisfactory [ 29 ]. According to the elemental content ratio and charge balance, the as-prepared product was inferred as [Cu 0.72 Al 0.28 (OH) 2 ] [(CO 3 2− )0.14·mH 2 O].…”

Section: Resultsmentioning

confidence: 99%

“…This nanoscale structure of CuAl-LDH/Gr not only provides more binding sites for glyphosate, but also improves the conductivity by a larger electron-exchange surface on the GCE. ) is usually considered the LDHs more suitable for stable structure and composition, so the elemental ratio 27.73% of as-prepared LDH was satisfactory [29]. According to the elemental content ratio and charge balance, the as-prepared product was inferred as [Cu 0.72 Al 0.28 (OH) 2 ] [(CO 3 2− )0.14•mH 2 O].…”

Section: Characterization Of Cual-ldh/gr Nanocompositesmentioning

confidence: 99%

“…(OH)2] x+ (A n− )x/n mH2O) is usually considered the LDHs more suitable for stable structure and composition, so the elemental ratio 27.73% of as-prepared LDH was satisfactory [29]. According to the elemental content ratio and charge balance, the as-prepared product was inferred as [Cu0.72Al0.28(OH)2] [(CO3 2-)0.14•mH2O].…”

Section: Characterization Of Cual-ldh/gr Nanocompositesmentioning

confidence: 99%

“…Layered double hydroxides (LDHs) have gained increasing attention as two-dimensional host/guest nanomaterials in several applications, including catalysis, biochemical applications, fire retardants, adsorption, super capacitors and electrochemical sensors [ 23 , 24 , 25 , 26 , 27 , 28 ]. Divalent and trivalent metal ions with a radius close to that of Mg 2+ (e.g., Al, Ni, Mn, Co and Cu) can change the metal composition in LDHs [ 29 ]. The open structure and high biocompatibility of LDHs prompt their extensive use as effective redox mediators or stable matrixes in diverse electrochemical sensors, including the NiMn-LDH/graphene oxide for monitoring sugars and peroxides, the NiAl-LDH-based sensor for detecting ozone, and the Co 2 Al-LDH/graphene-based on a biosensor to measure trichloroacetic acid [ 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

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Performance of CuAl-LDH/Gr Nanocomposite-Based Electrochemical Sensor with Regard to Trace Glyphosate Detection in Water

Zhang

et al. 2020

Sensors

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Glyphosate, which has been widely reported to be a toxic pollutant, is often present at trace amounts in the environment. In this study, a novel copper-aluminum metal hydroxide doped graphene nanoprobe (labeled as CuAl–LDH/Gr NC) was first developed to construct a non-enzymatic electrochemical sensor for detection trace glyphosate. The characterization results showed that the synthesized CuAl–LDH had a high-crystallinity flowered structure, abundant metallic bands and an intercalated functional group. After mixed with Gr, the nanocomposites provided a larger surface area and better conductivity. The as-prepared CuAl–LDH/Gr NC dramatically improved the enrichment capability for glyphosate to realize the stripping voltammetry detection. The logarithmic linear detection range of the sensor was found to be 2.96 × 10−9–1.18 × 10−6 mol L−1 with the detection limit of 1 × 10−9 mol L−1 with excellent repeatability, good stability and anti-interference ability. Further, the sensor achieved satisfactory recovery rates in spiked surface water, ranging from 97.64% to 108.08%, demonstrating great accuracy and practicality.

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Section: Resultsmentioning

confidence: 99%

Section: Characterization Of Cual-ldh/gr Nanocompositesmentioning

confidence: 99%

Section: Characterization Of Cual-ldh/gr Nanocompositesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance of CuAl-LDH/Gr Nanocomposite-Based Electrochemical Sensor with Regard to Trace Glyphosate Detection in Water

Zhang

et al. 2020

Sensors

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“…Nanolayered double hydroxide (LDH), also known as anionic clay [1], is a type of anionic layered compound consisting of a positively charged metal hydroxide outlayer and a negative anion interlayer [2]. The molecular formula of LDH is [M II 1-x M III x (OH) 2 ] x+ (A n-) X/n •yH 2 O (x = 0:2 -0:33, y = 0:5 -1), where M III represents trivalent metal ions, M II represents divalent metal ions, A nrepresents n-valent anions, and LDH represents the different structures that can be synthesized by changing the value of x [3,4]. LDH can be cost-effectively prepared in the laboratory with good biocompatibility, adjustable layer charge density and particle size, low storage requirements, and low toxicity [1,5].…”

Section: Introductionmentioning

confidence: 99%

Nanolayered Double Hydroxide Inhibits the Pathogenicity of Vibrio parahaemolyticus

Wang¹,

Ma²,

Hu³

et al. 2021

Journal of Nanomaterials

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Nanolayered double hydroxide (LDH) is a type of anion layered inorganic compound whose bacteriostatic properties have recently garnered much attention. Vibrio parahaemolyticus is a marine pathogen that can lead to aquaculture diseases and substantial economic losses. Therefore, our study assessed the mechanisms by which Mg/Al-LDH prevents V. parahaemolyticus infection. Our results demonstrated that Mg/Al-LDH not only inhibited V. parahaemolyticus growth but also biofilm formation. Moreover, coupling Mg/Al-LDH with hydrogen peroxide and UV irradiation further inhibited the growth and biofilm formation of V. parahaemolyticus. Additionally, Mg/Al-LDH was found to adversely affect DNA and the gelling ability of chitosan. Furthermore, exposing V. parahaemolyticus to Mg/Al-LDH led to a 54.73% and 4.3% inhibition in the expression of the toxic genes tlh and trh, respectively. Mg/Al-LDH also improved the symptoms of V. parahaemolyticus infection in Penaeus vannamei, making this a promising candidate to prevent pathogenic bacteria infection in aquaculture.

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Antibacterial and Healing Potential of Zn-Al LDHs/Cellulose Acetate Nanocomposite in Burns and Wounds: A Study on Earthworms as a Human Skin Model

Abd El-Aziz,

Hetta,

Abd Ellah

et al. 2024

J Inorg Organomet Polym

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Protection against microbial invasion has gained much attention to accelerate wound healing. Layered double hydroxides (LDHs) have antimicrobial properties due to their partial release of metallic ions. In this study, Zn-Al LDHs was chemically prepared and then supported on cellulose acetate (CA) in the form of nanocomposite. This novel Zn-Al LDHs/CA nanocomposite was in vitro characterized, and its antibacterial efficacy was determined using the agar well diffusion method. Moreover, healing capabilities of the nanocomposite were evaluated via topical application on wounds and burns induced in earthworms as a model of human skin like. The average crystallite sizes of Zn-Al LDHs and 50% Zn-Al/CA nanocomposite were 18.4 nm and 14.8 nm, respectively. TEM micrographs revealed that pure CA, pure Zn-Al LDHs, and 50% Zn-Al LDHs/CA nanocomposites had an average particle size of 27.7 ± 13.5, 296.2 ± 123, and 223.2 ± 83.4 nm, respectively. Pure Zn-Al LDHs showed antibacterial activity against different bacterial strains (Inhibition zone: 15 ± 2 to 20 ± 4 mm). However, when 50% Zn-Al LDHs was supported on CA, the inhibition zone was significantly higher (20 ± 3 to 26 ± 2 mm). Visual inspection, scanning electron microscopy and histological studies of earthworm skin revealed better morphology and shorter healing duration with Zn-Al LDHs/CA nanosystem (66 h for wounds and 144 h for burns) when compared with untreated control (> 400 h). In conclusion, these findings reveal that Zn-Al LDHs/CA nanocomposite is a promising promoter for wound and burn healing due to its biocompatibility and antibacterial activity.

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Ternary layered double hydroxides (LDH) based on Cu- substituted Zn Al for the design of efficient antibacterial ceramics

Cited by 27 publications

References 44 publications

Performance of CuAl-LDH/Gr Nanocomposite-Based Electrochemical Sensor with Regard to Trace Glyphosate Detection in Water

Performance of CuAl-LDH/Gr Nanocomposite-Based Electrochemical Sensor with Regard to Trace Glyphosate Detection in Water

Nanolayered Double Hydroxide Inhibits the Pathogenicity of Vibrio parahaemolyticus

Antibacterial and Healing Potential of Zn-Al LDHs/Cellulose Acetate Nanocomposite in Burns and Wounds: A Study on Earthworms as a Human Skin Model

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