Efficient removal of cadmium using facile functionalized of mesoporous silica via a biomimetic coating

Yan, Chen; Gao, Junkai; Wen, Xiaofei; Wu, Wei

doi:10.1039/c5ra24735g

Cited by 17 publications

(20 citation statements)

References 53 publications

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“…The limit of detection (LOD) and the relative standard deviation (RSD, n = 6) of Cd were 0.1 µg/L and 1.0% with a preconcentration factor of 10, respectively. The LOD that was obtained in this study was the same as that reported by using resin for preconcentration [14], both are one magnitude smaller than the value obtained by using amino-functionalized mesoporous sorbent for Cd(II) preconcentration [22].…”

Section: Limit Of Detectionsupporting

confidence: 78%

“…The adsorption capacity (qmax) and adsorption constant (KL) were 28.5 mg/g and 0.14 L/mg, respectively. When comparing qmax reported in this study with the reported values for other adsorbents (4-137 mg/g) [22], qmax reported in this study is in the medium rank. However, other adsorbents, like meso silica (MCM-48, SBA-15 etc.…”

Section: Quantification Of Attached Dmsa and Pda In Dmsa/pda/znosupporting

confidence: 54%

“…Polydopamine (PDA) deposition has been successfully applied in the modification of metallic oxide [17,18], silicon dioxide [19], carbon-based nanomaterials [20], hydrophobic polymer [21], and other material surfaces. PDA coated adsorbents have high adsorption capacity of Cd(II) and other heavy metal ions [22,23]. For instance, the adsorption capacity of Cd(II) onto PDA modified meso-structured silica is 107 mg/g [22].…”

mentioning

confidence: 99%

“…PDA coated adsorbents have high adsorption capacity of Cd(II) and other heavy metal ions [22,23]. For instance, the adsorption capacity of Cd(II) onto PDA modified meso-structured silica is 107 mg/g [22]. Thiol has a higher chelating ability with Cd(II) when compared to hydroxyl and amino functional groups [24,25].…”

mentioning

confidence: 99%

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The Application of Self-Assembled of Meso-2,3-Dimercaptosuccinic Acid-Polydopamine-Zinc Oxide for Trace Cadmium Analysis

Lü

Zhang

2020

Applied Sciences

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Nanomaterials have been applied in the analysis of trace contaminants in aquatic samples; however, the adsorption affinity of heavy metal ions to metallic oxide nanoparticles is low. Meso-2,3-dimercaptosuccinic acid-polydopamine-zinc oxide (DMSA/PDA/ZnO) was synthesized through a facile self-assembly process for enhancing the adsorption capacity of ZnO to cadmium cation (Cd(II)). A method for the analysis of trace Cd(II) in water samples was developed while using dimercaptosuccinic acid/Polydopamine/zinc oxide (DMSA/PDA/ZnO) as an adsorbent and atomic absorption spectrometry (AAS) as a means of determination. The results demonstrate that the adsorption ratio of DMSA-PDA-ZnO to 1 mg/L Cd(II) is around 95% at pH 6.0–8.0 with a contact time of 31 h, and the enrichment rate can be more than 98% with the dosage of DMSA-PDA-ZnO exceeding 1.0 g/L. The adsorption isotherm of Cd(II) to DMSA/PDA/ZnO fits the Langmuir equation well, and the saturated adsorption of DMSA-PDA-ZnO to Cd(II) is 28.5 mg/g. The detection limit (3σ) of this method is 0.1 μg/L, with a relative standard deviation of 1%. Additionally, this method presents satisfactory performance with a recovery rate of 86−90% when applied to the detection of Cd(II) in environmental water samples.

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Section: Limit Of Detectionsupporting

confidence: 78%

Section: Quantification Of Attached Dmsa and Pda In Dmsa/pda/znosupporting

confidence: 54%

mentioning

confidence: 99%

mentioning

confidence: 99%

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The Application of Self-Assembled of Meso-2,3-Dimercaptosuccinic Acid-Polydopamine-Zinc Oxide for Trace Cadmium Analysis

Lü

Zhang

2020

Applied Sciences

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“…Typical peaks at 467 cm −1 , 796 cm −1 and 1086 cm −1 corresponded to the bending vibration, symmetric stretching and asymmetric stretching of Si-O-Si bonds from all of the samples, suggesting that the structure of Meso-Onion-S was well preserved in DPMS and LCS@DPMS23. Characteristic band at 962 cm −1 represented the symmetric stretching vibration of Si-OH groups24. The adsorption peak at 1495 cm −1 of DPMS was belong to the stretching of benzene ring in the polydopamine17, which indicated the successful immobilization of dopamine.…”

Section: Resultsmentioning

confidence: 93%

Dopamine-functionalized mesoporous onion-like silica as a new matrix for immobilization of lipase Candida sp. 99-125

Gao

Jiang

et al. 2017

Sci Rep

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Dopmine functionalized mesoporous onion-like silica (DPMS) was synthesized via a biomimetic coating, and lipase Candida sp. 99-125 (LCS) was immobilized in DPMS (LCS@DPMS) by physical adsorption in this study. The DPMS was characterized by SEM, TEM, BET and FT-IR, and it was shown that the DPMS had clear multishell structures with large surface area of 419 m2/g. The activity, pH stability, thermal stability, storage stability, and reusability of the LCS@DPMS were investigated in detail. The stabilities of LCS@DPMS were improved significantly compared to the free lipase and LCS@MS (LCS immobilized in unfunctionalized mesoporous onion-like silica by physical adsorption). All the results indicated that the DPMS had high efficiency and improved stability for lipase immobilization.

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Development of Universal and Clickable Film by Mimicking Melanogenesis: On‐Demand Oxidation of Tyrosine‐Based Azido Derivative by Tyrosinase

Bisht

Jeong

Hong

et al. 2022

Macromol. Rapid Commun.

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A tyrosine‐based azido derivative (TBAD) that permits both substrate‐independent surface coating and clickable film functionalization by mimicking natural melanogenesis is synthesized here. In contrast to catechol derivatives, which are generally susceptible to oxidation by air under ambient conditions, the monophenol‐based TBAD remains stable under alkaline and neutral conditions and is activated to oxidized quinone in situ by tyrosinase to initiate melanin‐like polymerization. The resulting poly(TBAD) film can be formed on various substrates including noble metals, metal oxides, and synthetic polymers, which can undergo click reaction with terminal alkyne moieties on the entire surface or a specific region through Cu(I)‐catalyzed azide‐alkyne cycloaddition. The enzyme‐mediated coating can rapidly form thin films (≈10 nm) and produce a uniform film morphology, which are important aspects in surface chemistry. This on‐demand, clickable coating may become a significant tool for bioconjugation, soft lithography, and labeling techniques.

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Efficient removal of cadmium using facile functionalized of mesoporous silica via a biomimetic coating

Abstract: A mesoporous material (DMOS), prepared by grafting polydopamine onto meso-structured silica (MOS), was developed as a sorbent to sequestrate Cd2+.

Cited by 17 publications

References 53 publications

The Application of Self-Assembled of Meso-2,3-Dimercaptosuccinic Acid-Polydopamine-Zinc Oxide for Trace Cadmium Analysis

The Application of Self-Assembled of Meso-2,3-Dimercaptosuccinic Acid-Polydopamine-Zinc Oxide for Trace Cadmium Analysis

Dopamine-functionalized mesoporous onion-like silica as a new matrix for immobilization of lipase Candida sp. 99-125

Development of Universal and Clickable Film by Mimicking Melanogenesis: On‐Demand Oxidation of Tyrosine‐Based Azido Derivative by Tyrosinase

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