Amine-functionalized mesoporous silica for urea adsorption

Cheah, Wee-Keat; Sim, Yoke‐Leng; Yeoh, Fei-Yee

doi:10.1016/j.matchemphys.2016.03.007

Cited by 81 publications

(53 citation statements)

References 19 publications

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“…Next, pVI beads were oxidized on a 40‐g scale under these conditions for 24 h, yielding 49.1 g sorbent beads containing ninhydrin groups (pVI‐Ox). The BC of the obtained pVI‐Ox beads was 3.2 mmol g −1 , which is one of the highest reported urea binding capacities of sorbents reported so far 18,35,36…”

Section: Resultsmentioning

confidence: 72%

A Ninhydrin‐Type Urea Sorbent for the Development of a Wearable Artificial Kidney

Jong

Guo

Hazenbrink

et al. 2020

Macromolecular Bioscience

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The aim of this study is to develop polymeric chemisorbents with a high density of ninhydrin groups, able to covalently bind urea under physiological conditions and thus potentially suitable for use in a wearable artificial kidney. Macroporous beads are prepared by suspension polymerization of 5‐vinyl‐1‐indanone (vinylindanone) using a 90:10 (v/v) mixture of toluene and nitrobenzene as a porogen. The indanone groups are subsequently oxidized in a one‐step procedure into ninhydrin groups. Their urea absorption kinetics are evaluated under both static and dynamic conditions at 37 °C in simulated dialysate (urea in phosphate buffered saline). Under static conditions and at a 1:1 molar ratio of ninhydrin: urea the sorbent beads remove ≈0.6–0.7 mmol g−1 and under dynamic conditions and at a 2:1 molar excess of ninhydrin ≈0.6 mmol urea g−1 sorbent in 8 h at 37 °C, which is a step toward a wearable artificial kidney.

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Section: Resultsmentioning

confidence: 72%

A Ninhydrin‐Type Urea Sorbent for the Development of a Wearable Artificial Kidney

Jong

Guo

Hazenbrink

et al. 2020

Macromolecular Bioscience

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“…Another NH characteristic band which is usually observed at ca 3380 cm −1 is not observed for SG‐APD‐1–4. The broad band at 3200 to 3600 cm −1 , which corresponds to OH bonds, might have covered the NH bands . The band at ca 1384 cm −1 corresponding to SiOH is much stronger in the spectrum of the native silica gel than in those of SG‐APD‐1–4, while a new band at ca 2873 cm −1 corresponding to CH 2  is stronger in the spectra of SG‐APD‐1–4 than in that of the native silica gel .…”

Section: Resultsmentioning

confidence: 97%

Silica gel-based adsorbents prepared via homogeneous and heterogeneous routes: adsorption properties and recycling as heterogeneous catalysts

Jin

Sun

et al. 2017

Polym. Int.

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Silica gel-based adsorbents were prepared via homogeneous and heterogeneous routes using two silane coupling reagents, 3-glycidoxypropyltrimethoxysilane and -chloropropyltrimethoxysilane. Characterization results showed that amino contents of the adsorbents prepared via the homogeneous route were higher than those of the adsorbents prepared via the heterogeneous route for both silane coupling reagents. The adsorption capabilities of the resulting four types of adsorbents for Hg(II), Cu(II), Au(III), Ni(II), Pb(II) and Ag(I) ions were compared. Good adsorption capability for Au(III) was observed for the new adsorbents and the maximum static saturated adsorption capacities for Au(III) could reach 0.67 mmol g −1 . Due to the formation of Au(0) particles in the adsorption process, which hampered the reusability of the spent adsorbents, alternative recycling of the spent adsorbents after Au(III) adsorption was sought. The spent adsorbents were treated with NaBH 4 and used as catalysts in the reduction of 4-nitrophenol to 4-aminophenol. After three catalytic cycles at 298 K, the k values indicated minimal decrease of catalytic activity.

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“…Karbon aktif memiliki keunikan tersendiri diantara berbagai jenis adsorben yang ada yaitu permukaannya yang memiliki luas permukaan yang besar karena adanya pori-pori kecil (mesopore dan mikropori) yang mudah dimodifikasi dengan penambahan gugus fungsional untuk meningkatkan interaksi dengan adsorbat yang akan dijerap sehingga kapasitas adsorpsi karbon pori semakin meningkat (Cheah et al, 2016). Kelebihan lain yang dimiliki karbon aktif adalah dapat dibuat dari beragam jenis bahan yang mudah ditemukan di alam sekitar yang mengandung karbon seperti berbagai jenis biomassa yakni kayu, sekam padi, kulit durian (Zhu et al, 2012), residu alga blooming (Zhu et al, 2012), bahkan dari bahan limbah.…”

Section: Pendahuluanunclassified

Penjerapan Urea dengan Karbon Aktif dari Kayu Bakar

Rahayu¹,

Amrullah²

2020

JPPL

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Amine-functionalized mesoporous silica for urea adsorption

Cited by 81 publications

References 19 publications

A Ninhydrin‐Type Urea Sorbent for the Development of a Wearable Artificial Kidney

A Ninhydrin‐Type Urea Sorbent for the Development of a Wearable Artificial Kidney

Silica gel-based adsorbents prepared via homogeneous and heterogeneous routes: adsorption properties and recycling as heterogeneous catalysts

Penjerapan Urea dengan Karbon Aktif dari Kayu Bakar

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