Biodegradable macro-porous CMC-polyaniline hydrogel: synthesis, characterization and study of microbial elimination and sorption capacity of dyes from waste water

Bagheri, Nazanin; Lakouraj, Moslem Mansour; Hasantabar, Vahid; Mohseni, Mojtaba

doi:10.1016/j.jhazmat.2020.123631

Cited by 60 publications

(31 citation statements)

References 46 publications

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“…During the freezing process, the free radicals were produced by the APS and TEMED initiator couples. Crosslinking and polymerization occurred among the MFC, VIM, and MBA 45,47 . The representative reaction mechanism is shown in Figure 1(b) for the synthesis of the poly(VIM)/MFC cryogel.…”

Section: Resultsmentioning

confidence: 99%

Microfibrillated cellulose reinforced poly(vinyl imidazole) cryogels for continuous removal of heavy metals

Zhang

Zhong

Xiang

et al. 2021

J of Applied Polymer Sci

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Interconnected macro‐porous cryogels with robust mechanical structure and high adsorption capacity are desirable for the wastewater clean‐up. However, some functional alkenyl‐based monomer such as vinyl imidazole (VIM) could not be individually polymerized to form the cryogel with a robust structure for applications. Herein, a strategy has been developed to fabricate the poly(VIM) cryogel using microfibrillated cellulose (MFC) as reinforcing agent. Structural characterizations indicated that the poly(VIM)/MFC showed interconnected macropores of 12 ± 10 μm and high VIM contents. Underwater compression experiments displayed that the hysteresis loops changed slightly and the energy loss coefficients were less than 23% during loading‐unloading 200 cycles, highlighting the excellent shape recovery and fatigue resistance. Batch adsorption indicated that the adsorption capacities of the poly(VIM)/MFC cryogel to Cu(II), Pb(II), Zn(II), Cd(II), Ni(II), and Co(II) were 87.4, 53.9, 48.6, 44.3, 23.8, and 20.1 mg/g, respectively. The pseudo second‐order kinetic and Langmuir model can fit the adsorption process well, confirming the single‐layer homogeneous chemisorption. Dynamic adsorption displayed that the loaded Cu(II) ions could be rapidly adsorbed and hardly flow through the poly(VIM)/MFC cryogel, indicating the extremely fast adsorption at the flow mode. This study shows a novel strategy to fabricate the robust cryogel for environmental remediation.

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Section: Resultsmentioning

confidence: 99%

Microfibrillated cellulose reinforced poly(vinyl imidazole) cryogels for continuous removal of heavy metals

Zhang

Zhong

Xiang

et al. 2021

J of Applied Polymer Sci

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“…With the rapid development of artificial intelligence and micro-robotics, medical hydrogels have broad application prospects for biomedical sensing, due to their stretchability, wearability, and drug delivery applications ( Pan et al, 2012 ; Zhai et al, 2013 ; Hasanzadeh et al, 2014 ; Bagheri et al, 2020 ; Chu et al, 2020 ; Xu et al, 2020 ). Previous studies have shown that medical hydrogel dressings can mold to the skin, as they are conducive to electrical signals ( Hasanzadeh et al, 2014 ; Xu et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

“…Of the many conductive polymer materials, polyaniline (PANI) exhibits good conductivity, has a simple modification process, and can be easily combined with other hydrogel materials ( Guimard et al, 2007 ; Pan et al, 2012 ; Zhai et al, 2013 ; Bagheri et al, 2020 ; Chu et al, 2020 ; Song et al, 2020 ). Thus, this material has been extensively studied for bioelectrical sensing and electrochemical detection ( Pan et al, 2012 ; Zhai et al, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

A Novel Conductive Antibacterial Nanocomposite Hydrogel Dressing for Healing of Severely Infected Wounds

et al. 2021

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Wound infections are serious medical complications that can endanger human health. Latest researches show that conductive composite materials may make endogenous/exogenous electrical stimulation more effective, guide/comb cell migration to the wound, and subsequently promote wound healing. To accelerate infected wound healing, a novel medical silver nanoparticle-doped conductive polymer-based hydrogel system (Ag NPs/CPH) dressing with good conductivity, biocompatibility, and mechanical and antibacterial properties was fabricated. For the hydrogel dressing, Ag NPs/CPH, polyvinyl alcohol (PVA), and gelatin were used as the host matrix materials, and phytic acid (PA) was used as the cross-linking agent to introduce conductive polyaniline into the matrix, with antibacterial Ag NPs loaded via impregnation. After a series of analyses, the material containing 5 wt% of PVA by concentration, 1.5 wt% gelatin, 600 μL of AN reactive volume, and 600 μL of PA reactive volume was chosen for Ag NPs/CPH preparation. XPS and FTIR analysis had been further used to characterize the composition of the prepared Ag NPs/CPH. The test on the swelling property showed that the hydrogels had abundant pores with good water absorption (≈140% within 12 h). They can be loaded and continuously release Ag NPs. Thus, the prepared Ag NPs/CPH showed excellent antibacterial property with increasing duration of immersion of Ag NPs. Additionally, to evaluate in vivo safety, CCK-8 experiments of HaCat, LO2 and 293T cells were treated with different concentrations of the Ag NPs/CPH hydrogel soaking solution. The experimental results showed the Ag NPs/CPH had no significant inhibitory effect on any of the cells. Finally, an innovative infection and inflammation model was designed to evaluate the prepared Ag NPs/CPH hydrogel dressing for the treatment of severely infected wounds. The results showed that even when infected with bacteria for long periods of time (more than 20 h), the proposed conductive antibacterial hydrogel could treat severely infected wounds.

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“…In recent years, numerous studies have indicated the presence of a new class of molecules in the aquatic environment, known as "emerging pollutants" (Bagheri et al, 2021;Salazar et al, 2020a;Tobajas et al, 2017a). The extent of their threat toward human life, fauna and flora has not yet been completely elucidated, and their recent detection in water, even at very low amounts (Salazar et al, 2020a), has caused toxicity to plants, animals and humans (Abbas et al, 2018;Iqbal, 2016), and represents a new kind of concern that has no regulatory status.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, the main challenge is to improve processing technologies towards new methods that are less harmful, durable, cost effective and non-corrosive to equipment (Bagheri et al, 2021). In this respect, the photocatalysis is an efficient advanced oxidation process (AOP) which offers different advantages such as n ability to apply under ambient temperature and pressure, use to treat emerging pollutants and to achieve their mineralization to the ubiquitous substances like H 2 O and CO 2 (Tab et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

High efficiency photocatalytic degradation of Ambroxol over Mn doped TiO2: Experimental designs, identification of transformation products, mineralization and mechanism

Tab

Dahmane

Belabed

et al. 2021

Science of The Total Environment

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Ambroxol (AMB) is a drug commonly used for chronic bronchitis prevention. Once released in surface water, this recalcitrant chemical becomes a hazardous pollutant.Here, we investigated the ability of 1% Mn-doped TiO 2 (Mn-TiO 2 ) to mineralize AMB by photocatalysis. We studied the morphology, and the physical and electrochemical properties of Mn-TiO 2 using X-ray diffraction, Scanning electron microscopy, Transmission electron microscopy, X-ray fluorescence, BET method, UV-visible, and electrochemical study and optimized the AMB degrading experimental conditions through response surface methodology (RSM). Mn-TiO 2 at the dose of 0.625 g.L -1 allowed the complete photodegradation of AMB (30 ppm) at pH 7 under UVA light irradiation for 30 min while total mineralization in CO 2 (> 96%) was achieved after 24 h of irradiation. Mn-TiO 2 was 1.6-time more efficient than TiO 2 Degussa P25. Product studies were also carried out by liquid 2 chromatography coupled to electrospray high resolution mass spectrometry. Twentyone photodegradation products were detected and identified. In addition, ionic chromatography analyses revealed the release of Br -, NH 4 + , and NO 3 at respectively 97, 63 and 35% of the total Br, and N initially present in AMB. Finally, the reusability of the photocatalyst was also tested. After four cycles, the almost complete photodegradation of AMB was achieved showing that Mn-TiO 2 was highly stable.This work brings new physical characteristics on Mn-TiO 2 photocatalyst. Moreover, it is the first study investigating the photocatalytic degradation of recalcitrant AMB drug.

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Biodegradable macro-porous CMC-polyaniline hydrogel: synthesis, characterization and study of microbial elimination and sorption capacity of dyes from waste water

Cited by 60 publications

References 46 publications

Microfibrillated cellulose reinforced poly(vinyl imidazole) cryogels for continuous removal of heavy metals

Microfibrillated cellulose reinforced poly(vinyl imidazole) cryogels for continuous removal of heavy metals

A Novel Conductive Antibacterial Nanocomposite Hydrogel Dressing for Healing of Severely Infected Wounds

High efficiency photocatalytic degradation of Ambroxol over Mn doped TiO2: Experimental designs, identification of transformation products, mineralization and mechanism

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