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Jiao Xia Sun

Bio: Jiao Xia Sun is an academic researcher from Chongqing University. The author has contributed to research in topics: Materials science & Hydrogen bond. The author has an hindex of 1, co-authored 2 publications receiving 8 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper , the surface degradation process and release of MPs of two types of plastic films (polyethylene (PE) and thermoplastic polyurethane (TPU)) under the action of UVR, MA and UVR+MA were analyzed and compared.

14 citations

Journal ArticleDOI
TL;DR: In this article, a new positively thermo-sensitive hydrogel was designed and synthesized by a condensation polymerization reaction of ENTAD and piperazine to give poly (ethylenediaminetetraacetic dianhydride-co-piperazine) (PEP).

10 citations

Journal ArticleDOI
25 Jul 2022-Water
TL;DR: In this paper , the authors investigated the adsorption behavior and mechanism of microfiltration membranes (MFMs) with different physiochemical properties (polyamide (PA), polyvinylidene fluoride (PVDF), nitrocellulose (NC), and polytetrafluoroethylene (PTFE)) for bisphenol A (BPA).
Abstract: This study mainly investigated the adsorption behavior and mechanism of microfiltration membranes (MFMs) with different physiochemical properties (polyamide (PA), polyvinylidene fluoride (PVDF), nitrocellulose (NC), and polytetrafluoroethylene (PTFE)) for bisphenol A (BPA). According to the adsorption isotherm and kinetic, the maximum adsorption capacity of these MFMs was PA (161.29 mg/g) > PVDF (80.00 mg/g) > NC (18.02 mg/g) > PTFE (1.56 mg/g), and the adsorption rate was PVDF (K1 = 2.373 h−1) > PA (K1 = 1.739 h−1) > NC (K1 = 1.086 h−1). The site energy distribution analysis showed that PA MFMs had the greatest adsorption sites, followed by PVDF and NC MFMs. The study of the adsorption mechanism suggested that the hydrophilic microdomain and hydrophobic microdomain had a micro-separation for PA and PVDF, which resulted in a higher adsorption capacity of PA and PVDF MFMs. The hydrophilic microdomain providing hydrogen bonding sites and the hydrophobic microdomain providing hydrophobic interaction, play a synergetic role in improving the BPA adsorption. Due to the hydrogen bonding force being greater than the hydrophobic force, more hydrogen bonding sites on the hydrophobic surface resulted in a higher adsorption capacity, but the hydrophobic interaction contributed to improving the adsorption rate. Therefore, the distribution of the hydrophilic microdomain and hydrophobic microdomain on MFMs can influence the adsorption capacity and the adsorption rate for BPA or its analogues. These consequences provide a novel insight for better understanding the adsorption behavior and mechanism on MFMs.

3 citations

Journal ArticleDOI
27 Nov 2022-Water
TL;DR: In this article , the adsorption capacity of PDA/PEI-TPU NFMs was evaluated using three anionic dyes: congo red (CR), sunset yellow (SY), and methyl orange (MO).
Abstract: Considering the notable mechanical properties of thermoplastic polyurethane (TPU), polydopamine–polyethyleneimine (PEI) -modified TPU nanofiber membranes (PDA/PEI-TPU NFMs) have been developed successfully for removal of anionic azo dyes. The adsorption capacity of PDA/PEI-TPU NFMs was evaluated using three anionic dyes: congo red (CR), sunset yellow (SY), and methyl orange (MO). Interestingly, it exhibited different adsorption behaviors and mechanisms of CR on PDA/PEI-TPU NFMs compared with SY and MO. With the decrease in pH, leading to more positive charges on the PDA/PEI-TPU NFMs, the adsorption capacity of SY and MO increased, indicating electrostatic interaction as a main mechanism for SY and MO adsorption. However, wide pH range adaptability and superior adsorption have been observed during the CR adsorption process compared to SY and MO, suggesting a synergistic effect of hydrogen bonding and electrostatic interaction, likely as a critical factor. The adsorption kinetics revealed that chemical interactions predominate in the CR adsorption process, and multiple stages control the adsorption process at the same time. According to the Langmuir model, the maximum adsorption capacity of CR, SY and MO were reached 263, 17 and 23 mg/g, respectively. After six iterations of adsorption–desorption, the adsorption performance of the PDA/PEI-TPU NFMs did not decrease significantly, which indicated that the PDA/PEI-TPU NFMs have a potential application for the removal of CR molecules by adsorption from wastewater.

1 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper, a starch/poly(alginic acid-cl-acrylamide) nanohydrogel was synthesized by co-polymerization method which was used as an effective adsorbent for the removal of coomassie brilliant (CB) blue R-250 dye from the aqueous solution.

184 citations

Journal ArticleDOI
TL;DR: A smart metal-organic gel (MOG) formed from biscarboxyl-functionalized benzimidazole derivative (D11) in the presence of lead nitrate has been investigated as mentioned in this paper.

28 citations

Journal ArticleDOI
TL;DR: In this article, the effective removal of As(V) and Cd(II) from aqueous solutions by superabsorbent poly (NIPAAm/AA/N-allylisatin) nanohydrogel was highlighted.

18 citations

Journal ArticleDOI
TL;DR: It was shown that bacteria could be inhibited by a certain concentration of PE, while its toxicity toward osteoblasts was very low, which revealed the potential usefulness of PE in biomedical applications.
Abstract: Bacterial repellence by biomedical materials is a desirable property that can potentially improve the healing process In this study, we described a simple and green method to prepare a novel piperazine polymer (PE), which was based on the raw materials piperazine (PA) and ethylenediaminetetraacetic dianhydride (EDTAD) The structure and thermal stability of the obtained material were characterized using Fourier transform infrared spectrometry (FTIR), nuclear magnetic resonance spectroscopy (NMR), elementary analysis, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) To evaluate the antibacterial properties of PE, a strain of Gram-negative Escherichia coli (E coli) bacteria and a strain of Gram-positive Staphylococcus aureus (S aureus) bacteria were used The results indicated that PE exhibited good antibacterial activity against both strains of bacteria in a short time frame The initial cytotoxicity test of the obtained material was based on the changes in the morphology and proliferation of osteoblasts, and the results demonstrated that the cytotoxicity of PE was concentration-dependent Combining the experimental results of these two parts, it was shown that bacteria could be inhibited by a certain concentration of PE, while its toxicity toward osteoblasts was very low In summary, these results revealed the potential usefulness of PE in biomedical applications

8 citations

Journal ArticleDOI
Zi Liang1, Tingting Gao1, Jianan Xu1, Zhiying Li1, Xiaoli Liu1, Fengqi Liu1 
TL;DR: In this paper, the authors used free radical micellar copolymerization in aqueous solutions of acrylamide, anion surfactant sodium dodecyl sulfate (SDS) and a small amount of hydrophobic monomer octylphenol polyoxyethylene(7) acrylate(OP-7-AC) to obtain the critical tensile ratios and critical strength of the hydrogels.

6 citations