Ion-imprinted mesoporous silica/magnetic graphene oxide composites functionalized with Schiff-base for selective Cu(II) capture and simultaneously being transformed as a robust heterogeneous catalyst

Fang, Pai; Xia, Wangzhe; Zhou, Yuqing; Ai, Ziyun; Yin, Weiyan; Xia, Minggui; Yu, Jiahui; Chi, Ruan; Yue, Qinyan

doi:10.1016/j.cej.2019.123847

Cited by 63 publications

(11 citation statements)

References 52 publications

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“…As can be seen from the figure, the characteristic absorption peaks of the NIIP and IIP are basically the same, proving that they belong to the same type of copolymer. 45 , 46 The difference between the IIP and NIIP in structure could be deduced by absorption peaks at 1453.19, 1111.21, 934.94, and 507.17 cm –1 in the IIP shifted to 1450.32, 1106.93, 930.54, and 494.32 cm –1 in the NIIP. The synergistic effect of AA and AM on the surface of the imprinted hole resulted in the shift of the absorption peak.…”

Section: Resultsmentioning

confidence: 99%

Study on Synthesis and Adsorption Properties of ReO₄^– Ion-Imprinted Polymer

Liu

Jia

et al. 2020

ACS Omega

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In this work, an ion imprinted polymer (ReO 4 – -IIP) of the perrhenate ion based on acrylamide (AM) and acrylic acid (AA) was prepared by solution polymerization using ReO 4 – as a template ion, N , N -methylenebisacrylamide (NMBA) as cross-linkers, hydrogen peroxide-vitamin C (H 2 O 2 -Vc) as an initiator, and a mixed solution of water (H 2 O) and methanol (CH 3 OH) with volume ratio v(H 2 O)/v(CH 3 OH) = 3:7 as a solvent. During the process of synthesis condition investigation and optimization, the adsorption capacity ( Q ) and the separation degree ( R ) in the equimolar concentration mixture solutions of NH 4 ReO 4 and KMnO 4 were adopted as indexes, and the obtained optimal conditions were as follows: the molar ratios of NMBA, NH 4 ReO 4 , AA, H 2 O 2 , and Vc to AM were 5.73, 0.052, 1.29, 0.02, and 0.003, and the temperature and time of polymerization were 40 °C and 28 h, respectively. Under optimal conditions, the sample with indexes, Q and R of 0.064 mmol/g and 3.20, were harvested. What is more, a further reusability study found that good adsorption selectivity was maintained after repeating the experiment 9 times. Taking the non-IP prepared under the same conditions as a control, Fourier transform infrared spectroscopy, transmission electron microscopy, and Brunauer Emmett Teller were used to characterize the structure of the ReO 4 – -IIP prepared under the optimal conditions. Finally, the kinetic study results showed that the zero-order kinetic model could better describe the adsorption process. The thermodynamic study results showed that the Langmuir model was more suitable for describing the isotherm adsorption process of the IIP.

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Section: Resultsmentioning

confidence: 99%

Study on Synthesis and Adsorption Properties of ReO₄^– Ion-Imprinted Polymer

Liu

Jia

et al. 2020

ACS Omega

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“…In addition, waste Cu(II)-loaded adsorbent (MSNs/MGO-Cu) shows good catalytic performance to the manufacturing of 1-methyl-4-(p-tolyloxy)benzene with 95%. 26 The click synthesis technique has been used to prepare the heterogeneous nanocatalyst via the immobilization of copper on magnetic silica nanoparticles modied with triazine dendrimer (FMNP@TD-Cu(II)) (Fig. 4c).…”

Section: Silica-based Nanomaterials In Advanced Catalysismentioning

confidence: 99%

“…In addition, waste Cu( ii )-loaded adsorbent (MSNs/MGO–Cu) shows good catalytic performance to the manufacturing of 1-methyl-4-( p -tolyloxy)benzene with 95%. 26…”

Section: Silica-based Nanomaterials and Its Applicationsmentioning

confidence: 99%

Recent progress in the applications of silica-based nanoparticles

Nayl

2022

RSC Adv.

106

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“…Beberapa penelitian yang telah dilakukan untuk menurunkan kadar tembaga terlarut diantaranya dengan menggunakan metode adsorbsi berbasis karbon aktif (Shahraki, 2021); clay (Li, 2020); biochar ; silika (Fang, 2020); kitosan (Sutirman, 2020); nanobentonit termodifikasi nanoselulosa/kitosan (Shahnaz, 2020), physisorption (Purwiyanto, 2020), biokoagulasi (Tiandho, 2018), elektrokoagulasi (Kim, 2020), dan sebagainya. Metode adsorbsi merupakan metode yang paling banyak digunakan untuk menurunkan kadar tembaga terlarut dengan memanfaatkan material adsorban yang dapat mengikat logam tembaga terlarut melalui mekanisme pengikatan kation tembaga dengan anion adsorban sehingga kadar tembaga akan menurun.…”

Section: Pendahuluanunclassified

Ekstraksi Kitosan dari Limbah Cangkang Udang sebagai Adsorben Ion Logam Cu pada Air Kolong Timah Bangka

Aldila¹

2021

PROMINE

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Penelitian ini bertujuan untuk menganalisis pengaruh konsentrasi NaOH pada tahap deasetilasi terhadap adsorpsi kitosan ion logam Cu pada kolong timah Bangka. Ekstraksi kitosan dilakukan dalam empat tahap yaitu deproteinisasi, demineralisasi, dekolorisasi dan deasetilasi kitin. Pengaruh konsentrasi NaOH pada proses deasetilasi dipelajari. Hasil penelitian menunjukkan bahwa peningkatan konsentrasi NaOH dari 20% menjadi 60% maka kitosan DD meningkat. Laju difusi OH- menyebabkan peningkatan serangan OH- ke gugus amino sehingga mewujudkan deasetilasi kitin yang efektif. Kadar logam Cu pada penelitian ini mencapai 0,32 ppm. Adsorpsi kitosan pada ion logam cu menurunkan kadar terlarut rata-rata 99,67% dari kadar awal. Kandungan gugus hidroksil pada kitosan menyebabkan terjadinya reaksi pembentukan senyawa hidroksida dari ion logam Cu terlarut. Senyawa Cu hidroksida secara terpisah akan membentuk dan membentuk endapan. Semakin besar nilai derajat deasetilasi menyebabkan peningkatan kandungan gugus hidroksil dan menyebabkan peningkatan adsorpsi ion logam Cu.

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Ion-imprinted mesoporous silica/magnetic graphene oxide composites functionalized with Schiff-base for selective Cu(II) capture and simultaneously being transformed as a robust heterogeneous catalyst

Cited by 63 publications

References 52 publications

Study on Synthesis and Adsorption Properties of ReO₄^– Ion-Imprinted Polymer

Study on Synthesis and Adsorption Properties of ReO₄^– Ion-Imprinted Polymer

Recent progress in the applications of silica-based nanoparticles

Ekstraksi Kitosan dari Limbah Cangkang Udang sebagai Adsorben Ion Logam Cu pada Air Kolong Timah Bangka

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Ion-imprinted mesoporous silica/magnetic graphene oxide composites functionalized with Schiff-base for selective Cu(II) capture and simultaneously being transformed as a robust heterogeneous catalyst

Cited by 63 publications

References 52 publications

Study on Synthesis and Adsorption Properties of ReO4– Ion-Imprinted Polymer

Study on Synthesis and Adsorption Properties of ReO4– Ion-Imprinted Polymer

Recent progress in the applications of silica-based nanoparticles

Ekstraksi Kitosan dari Limbah Cangkang Udang sebagai Adsorben Ion Logam Cu pada Air Kolong Timah Bangka

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Product

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About

Study on Synthesis and Adsorption Properties of ReO₄^– Ion-Imprinted Polymer

Study on Synthesis and Adsorption Properties of ReO₄^– Ion-Imprinted Polymer