Three‐dimensionally ordered macroporous cross‐linked polystyrene incorporating functional groups via hydrophilic spacer arms: Application for heavy metal ion adsorption

Wang, Xiaomei; Zhang, Xu; Guo, Heng; Yuan, Lixia; Liu, Pange

doi:10.1002/pen.22166

Cited by 18 publications

(11 citation statements)

References 31 publications

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“…[31] Meanwhile, John and collaborators demonstrated the fabrication of photonic crystals with complete photonic bandgaps by growing silicon in the voids of a silica-based opal via chemical vapor deposition, followed by etching the template with HF (Figure 1D). [32] Such porous structures have been applied to a wide variety of applications in areas ranging from catalysis [33] to energy storage, [34] gas sorption, [35] sensing, [36] and photonics, [37] among others. [38] …”

Section: Inverse Opal Scaffoldsmentioning

confidence: 99%

Inverse Opal Scaffolds and Their Biomedical Applications

2017

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Three-dimensional porous scaffolds play a pivotal role in tissue engineering and regenerative medicine by functioning as biomimetic substrates to manipulate cellular behaviors. While many techniques have been developed to fabricate porous scaffolds, most of them rely on stochastic processes that typically result in scaffolds with pores uncontrolled in terms of size, structure, and interconnectivity, greatly limiting their use in tissue regeneration. Inverse opal scaffolds, in contrast, possess uniform pores inheriting from the template comprised of a closely packed lattice of monodispersed microspheres. The key parameters of such scaffolds, including architecture, pore structure, porosity, and interconnectivity, can all be made uniform across the same sample and among different samples. In conjunction with a tight control over pore sizes, inverse opal scaffolds have found widespread use in biomedical applications. In this review, we provide a detailed discussion on this new class of advanced materials. After a brief introduction to their history and fabrication, we highlight the unique advantages of inverse opal scaffolds over their non-uniform counterparts. We then showcase their broad applications in tissue engineering and regenerative medicine, followed by a summary and perspective on future directions.

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Section: Inverse Opal Scaffoldsmentioning

confidence: 99%

Inverse Opal Scaffolds and Their Biomedical Applications

2017

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“…This is performed by grafting or chemical modification, which has been well described in the current literature. [13,76,[102][103][104][105][106][107][108][109][110][111][112] …”

Section: Covalent Organic Framework (Cof's)mentioning

confidence: 99%

Porous Polymer Membranes by Hard Templating – A Review

2017

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Membranes are designed to bridge a precise separation process at the nanoscale with industrial applications running at cubic meters per hour. This review outlines materials applied in membrane production with a particular focus on polymers. Membrane performance and created value are directly linked to controlled pore formation. Their economic relevance has created a number of large companies and associated academic research at top institutions. The authors review, therefore, starts from well-established techniques applied in products and then moves on to evolving concepts from academia. Pore formation through hard templating is a versatile field for separation processes. A more detailed view is given on the two known concepts for nanopore formation, namely colloidal templates and random hard salt templating. A comparison between these two concepts underlines their relevance to combine a process specific separation with large scale manufacturing requirements (i.e., upscale possibility, flexible process control and environmental impact).

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“…The importance of these removal processes remains relevant to date depending up on the specific context of application. Recent research reports regarding the removal of organic dyes as well as undesired or heavy metal ions reveal the importance of the case specific investigation about the potential of various functional adsorbents. There exist several older reports in literature regarding the selective adsorption of uranium from various aqueous waste streams, which includes radioactive wastes, industrial waste and seawater.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and study of optimization of amidoximated PAN‐DVB‐EGDMA beads for the sorption of uranium from aqueous media

Kanjilal

Singh

Bairwa

et al. 2018

Polymer Engineering & Sci

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Environmental and economic considerations have made the sorption of uranium from aqueous media a very time demanding area of research from last few decades. In this particular work, amidoximated polyacrylonitrile beads were synthesized by the reaction of hydroxyl amine hydrochloride (OH‐NH2.HCl) with macroporous crosslinked polyacrylonitrile beads, prepared through suspension polymerization techniques, using acrylonitrile (AN) as monomer and divinylbenzene and ethyleneglycoldimethacrylate as crosslinkers, in a variety of relative compositions, to modify suitably the hydrophilicity and physicochemical stability. These beads were also characterized by FT‐IR, scanning electron microscope, and thermogravimetric analysis–differential scanning calorimetry techniques to explain the morphology and chemical functionality. The beads reached its saturation capacity towards uranyl ions well within 1 h of equilibration at ~25°C, under near neutral pH conditions and the observed maximum sorption capacity was found to be ~18 mg g−1. The beads were also used for the sorption of uranium from various real water samples and showed good sorption from these samples. Reusability of the beads was also established up to the studied four cycles. These synthesized beads can potentially serve the dual purpose of the decontamination of uranium contaminated potable well water as well as to treat acidic radioactive waste generated in nuclear industry before final discharge to environment. POLYM. ENG. SCI., 59:863–872, 2019. © 2018 Society of Plastics Engineers

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Three‐dimensionally ordered macroporous cross‐linked polystyrene incorporating functional groups via hydrophilic spacer arms: Application for heavy metal ion adsorption

Cited by 18 publications

References 31 publications

Inverse Opal Scaffolds and Their Biomedical Applications

Inverse Opal Scaffolds and Their Biomedical Applications

Porous Polymer Membranes by Hard Templating – A Review

Synthesis and study of optimization of amidoximated PAN‐DVB‐EGDMA beads for the sorption of uranium from aqueous media

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