Au(III) adsorption and reduction to gold particles on cost-effective tannin acid immobilized dialdehyde corn starch

Liu, Fenglei; Peng, Guilong; Li, Tong; Yu, Gang; Deng, Shubo

doi:10.1016/j.cej.2019.03.208

Cited by 133 publications

(39 citation statements)

References 39 publications

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“…A significant decrease in thermal stability was found for DAS at 200 °C. It is attributed to the destroyed crystals of potato starch by oxidizing reaction, which was consistent with the result in the literature 24 . Compared with DAS, the thermal stabilities of DASD5‐A, DAS‐NH 2 , and DAS2‐AT were slightly enhanced.…”

Section: Resultssupporting

confidence: 90%

“…Figure 2(a) displays the FT‐IR spectra of potato starch, DAS, DASD5‐A, DAS‐NH 2 , and DAS2‐AT. In the FT‐IR spectrum of potato starch, the characteristic peaks appearing at 3413 cm −1 , 2927 cm −1 , and 998 cm −1 were assigned to the vibrations of OH, CH, and CO bonds, respectively 24 . After oxidation of potato starch, the stretching vibrations of the CO bond at 1733 cm −1 was clearly observed in the FT‐IR spectrum of DAS.…”

Section: Resultsmentioning

confidence: 96%

“…Based on these advantages, many works have been attempted to improve the adsorptive ability of DAS by incorporating it with various ligands to remove heavy metal ions from aqueous solution. For example, Liu et al 24 . synthesized a dialdehyde starch‐based adsorbent via crosslinking reaction between tannin acid (TA) and dialdehyde starch for removal of Au(III) from aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

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Efficient removal of Pb(II) ions from aqueous solution by using a novel functionalized bio‐material with two tridentate coordinated units

Wang

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND Pb(II)‐containing wastewater causes serious pollution in our daily life. Adsorption is the technique most often used to remove heavy metals from aqueous solution. For improving the removal efficiency of Pb(II) ions from aqueous solution, adsorbent materials and the functionalization method of the adsorbent need to be further studied. RESULTS A novel Schiff's base functionalized bio‐material (DAS2‐AT) with two tridentate coordinated units was synthesized by the reaction of 2‐acetylthiophene and modified dialdehyde starch (DAS‐NH2) for the adsorption of Pb(II) ions from aqueous solution. Experimental results demonstrated that the DAS2‐AT exhibited high adsorption capacity and selectivity towards Pb(II), and the maximum adsorption capacity was up to 203 mg g−1. The adsorption isotherms and kinetic of Pb(II) ions on the DAS2‐AT were correlated well with the Langmuir isotherm model and Pseudo‐second‐order model. Moreover, thermodynamic analysis indicated that the adsorption process is spontaneous and endothermic. Desorption and regeneration experiments indicated that DAS2‐AT has good reusability. Besides that, the adsorbent displayed good affinity of DAS2‐AT towards Pb(II) ion in the presence of Cr(VI), Zn(II), and Ni(II) ions. CONCLUSION The bio‐adsorbent (DAS2‐AT) displayed good adsorption performance to remove Pb(II) ions from aqueous solution. DAS2‐AT gave a potential application as a low‐cost and effective adsorbent. © 2021 Society of Chemical Industry

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Efficient removal of Pb(II) ions from aqueous solution by using a novel functionalized bio‐material with two tridentate coordinated units

Wang

et al. 2021

J of Chemical Tech & Biotech

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“…Compared with the previously reported kinds of literature, HEDP/ATMP‐MWCNTs have the advantages of simple preparation and high adsorption performance. For example, the adsorption capacity of HEDP‐MWCNTs for lead ions is higher those (44.44 mg/g, 83.20 mg/g) reported in [40–41], and the adsorption capacity of ATMP‐MWCNTs for gold ions is higher the data (298.5 mg/g) reported in [42]. The above‐mentioned research results show that HEDP‐MWCNTs/ATMP‐MWCNTs is very favourable for the removal of lead/gold ions, and the excellent adsorption properties make them good promising candidate materials for the removal of Pb(II)/Au(III).…”

Section: Resultsmentioning

confidence: 67%

Facile preparation of multiphosphonic acid functionalised multi‐walled carbon nanotubes for enhanced adsorption properties for heavy metal ions from wastewaters

Jia

Yin

Yang

et al. 2020

Micro & Nano Letters

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“…Meanwhile, the adsorption for other metal ions is almost zero in the whole experimental range, and this is mainly because the form of Au(III) in acid solution is anionic AuCl 4 − [ 31 ]. However, some coexisting metal ions, such as Cu(II), Zn(II), and Ni(II), exhibit electrical neutrality or positively [ 33 , 34 ]. Furthermore, the adsorbent modified by organic amine will be positively charged by protonated in an acidic solution.…”

Section: Resultsmentioning

confidence: 99%

Selective Adsorption, Reduction, and Separation of Au(III) from Aqueous Solution with Amine-Type Non-Woven Fabric Adsorbents

Huang

et al. 2020

Materials

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Herein, adsorption, separation, and reduction of Au(III) from its aqueous solution were studied with different amine-type, non-woven fabric (NF) adsorbents fabricated with radiation-induced graft polymerization. The adsorbents exhibited different adsorption capacities of Au(III) over a concentration range of hydrochloric acid (HCl) from 5 mM to 5 M, and the diethylamine (DEA)-type adsorbent performed best under all test conditions. The DEA-type adsorbent was inert toward other metal ions, including Cu(II), Pb(II), Ni(II), Zn(II) and Li(I), within the fixed concentration range of HCl. Flow-through adsorption tests indicated DEA-type adsorbent exhibited a rapid recovery and high adsorption capacity of 3.23 mmol/g. Meanwhile, DEA-type adsorbent also exhibited high selectivity and rapid extraction for Au(III) from its mixed solution with Pt(IV) and Pd(II). After adsorption, the reduction of Au(III) was confirmed by XRD spectra, TEM, and digital micrograph images. The results indicated that nano-sized Au particles were mainly concentrated on the adsorbent in 5 mM HCl solution. In 1 M HCl solution, not only nano-sized Au particles were found, but also micro-size Au plates precipitation occurred. This study provides a novel material for selective and efficient gold uptake from aqueous solution.

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Au(III) adsorption and reduction to gold particles on cost-effective tannin acid immobilized dialdehyde corn starch

Cited by 133 publications

References 39 publications

Efficient removal of Pb(II) ions from aqueous solution by using a novel functionalized bio‐material with two tridentate coordinated units

Efficient removal of Pb(II) ions from aqueous solution by using a novel functionalized bio‐material with two tridentate coordinated units

Facile preparation of multiphosphonic acid functionalised multi‐walled carbon nanotubes for enhanced adsorption properties for heavy metal ions from wastewaters

Selective Adsorption, Reduction, and Separation of Au(III) from Aqueous Solution with Amine-Type Non-Woven Fabric Adsorbents

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