An aluminum silicate modified Ni-Al LDHs film to improve the corrosion resistance of AZ31 Mg alloy

Gu, Zhengpeng; Huang, Yuzhen; Wang, Ying; Yuan, Ningyi; Ding, Jianning

doi:10.1016/j.matlet.2019.06.010

Cited by 21 publications

(6 citation statements)

References 12 publications

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“…The modified CuAl-HC composite was seen to have a decreased intensity and a widening peak indicating that the crystallinity was decreased. This is triggered by the modification of LDH with HC, where HC has amorphous characteristics shown at an angle of 2θ, which is 22° (002) [33]. In addition, CuAl-HC showed an XRD pattern similar to pure CuAl-LDHs, this proves that the modified treatment by composited LDH with HC did not change the layer structure of LDH.…”

Section: Resultsmentioning

confidence: 85%

Size Selectivity of Anionic and Cationic Dyes Using LDH Modified Adsorbent with Low-Cost Rambutan Peel to Hydrochar

Normah

Juleanti

Siregar

et al. 2021

Bull. Chem. React. Eng. Catal.

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Modification of the layered double hydroxide of CuAl-LDHs by composite with hydrochar (HC) to form CuAl-HC LDH. Material characterization by XRD, FT-IR and SEM analysis was used to prove the success of the modification. The characterization of XRD and FT-IR spectra showed similarities to pure LDH and HC. Selectivity experiments were carried out by mixing malachite green, methylene blue, rhodamine-B, methyl orange, and methyl red to produce the most suitable methyl blue dye for CuAl-LDH, HC and CuAl-HC adsorbents. The effectiveness of CuAl-HC LDH as adsorbent on methylene blue adsorption was tested through several influences such as adsorption isotherm, thermodynamics, and adsorbent regeneration. CuAl-HC LDH adsorption isotherm data shows that the adsorption process tends to follow the Langmuir isotherm model with a maximum adsorption capacity of 175.439 mg/g with a threefold increase compared to pure LDH. The effectiveness of the adsorbent for repeated use reaches five cycles as evidenced by the maximum capacity regeneration data reaching 82.2%, 79.3%, 77.9%, 76.1%, and 75.8%. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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Section: Resultsmentioning

confidence: 85%

Size Selectivity of Anionic and Cationic Dyes Using LDH Modified Adsorbent with Low-Cost Rambutan Peel to Hydrochar

Normah

Juleanti

Siregar

et al. 2021

Bull. Chem. React. Eng. Catal.

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“…Figure 4a shows Ni/Al LDH which has a major vibration peak at 3483cm -1 ( O-H stretching) and a vibration peak at 1630cm -1 ( O-H bending). Vibration at 1370cm -1 ( CO3) and a peak vibration range of 700-400cm -1 ( M-O) (Gu et al 2019). Hydrochar is shown in Figure 4b, which has a major vibration peak around 617cm -1 ( C-O), 1384cm -1 ( C=C).…”

Section: Resultsmentioning

confidence: 99%

High Selectivity and Adsorption Capacity for Congo Red Toward Anionic Dyes by Adsorbent: Modified LDH with Hydrochar Made from Nephelium Lappaceum Peel

2022

Global NEST: The International Journal

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<p>Synthesis of Ni/Al-LDH prepared into Ni/Al-Hc composites using hydrochar from rambutan peel (Hc) and applied as a congo red adsorbent and analyzed based on adsorption selectivity, kinetics, isotherms, adsorption thermodynamics and recycling. The success of Ni/Al-Hc composite preparation was proven by XRD, FT-IR, and BET analysis which showed the unique characteristics of Ni/Al and Hc. The results of the analysis of adsorbent characterization using XRD showed that the peaks in the Ni/Al-Hc composite were similar to typical peaks of Ni/Al appearing around 10.9°(003), 45.5°(018) and hydrochar appearing around 22°(002). The results of the analysis were strengthened by characterization using FT-IR which showed that the Ni/Al-Hc composite had similar spectra with the precursor. BET analysis showed that the Ni/Al-Hc composite had an increase in specific surface area to 11.879 m2/g from 5.845 m2/g after Ni/Al was composited with Hc. The adsorption study showed that the Ni/Al-Hc composite showed selective ability to congo red, and was in equilibrium at 100 minutes with a tendency for adsorption to follow pseudo first order (R2 is closer to 1). The adsorption isotherm shows that the adsorption of Congo red tends to follow Freudlich with the maximum adsorption capacity reaching qm (adsorption capacity) of 246.23 mg/g each using Ni/Al-Hc adsorbent and the adsorption process takes place by physisorption, spontaneous and endothermic. The adsorption regeneration ability is more stable up to the fourth cycle compared to Ni/Al-LDH and Hc with the best desorption reagent using hydrochloric acid.</p>

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“…Layered double hydroxides (LDHs) are a class of 2D laminar nanomaterials, which are mainly composed of two positively charged brucite‐like layers with charge‐balancing anions. Due to the low cost, high chemical stability, unique laminar structure, and anion exchange properties, LDHs have been widely applied in adsorption and extraction . On account that the bonding force between LDHs and substrate is a relatively weak physical adsorption , the immobilization of inorganic LDHs onto the capillary wall is difficult and the application of LDHs in CEC is restricted.…”

Section: Open‐tubular Capillary Electrochromatographymentioning

confidence: 99%

Recent developments of monolithic and open‐tubular capillary electrochromatography (2017–2019)

Yin

Zhang

et al. 2020

J of Separation Science

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Capillary electrochromatography, which combined the high selectivity of highperformance liquid chromatography and the high separation efficiency of capillary electrophoresis, is an attractive separation tool. In this review, the developments on monolithic and open tubular capillary electrochromatography during 2017 to August 2019 are summarized. Considering the development of novel stationary phases is the most active research field in capillary electrochromatography, monolithic capillary electrochromatography is classified according to the polymer-based and hybrid monolithic columns, while open-tubular capillary electrochromatography is categorized by cyclodextrin, silica, polymer, nanomaterials, microporous materials, and biomaterials-based open tubular columns. K E Y W O R D S

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An aluminum silicate modified Ni-Al LDHs film to improve the corrosion resistance of AZ31 Mg alloy

Cited by 21 publications

References 12 publications

Size Selectivity of Anionic and Cationic Dyes Using LDH Modified Adsorbent with Low-Cost Rambutan Peel to Hydrochar

Size Selectivity of Anionic and Cationic Dyes Using LDH Modified Adsorbent with Low-Cost Rambutan Peel to Hydrochar

High Selectivity and Adsorption Capacity for Congo Red Toward Anionic Dyes by Adsorbent: Modified LDH with Hydrochar Made from Nephelium Lappaceum Peel

Recent developments of monolithic and open‐tubular capillary electrochromatography (2017–2019)

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