JOURNAL OF MOLECULAR LIQUIDS
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2023
·
IF 6
Yuqi Tang,Mingzhao Zhu,Junhong Chen,Xuebiao Sun,Huan Li,Zhijie Hu,Suman Li,Qian Qu,Zejun Zhang,Yuanzhu Mi
The petroleum industry produces a large volume of water-in-oil (W/O) emulsion annually, which has detrimental consequences for both the industry and the environment. Therefore, effective demulsification of these emulsions is crucial. In current work, a low-temperature demulsifier (EBTA) for W/O emulsions was synthesized using PET waste plastic as starting materials through a simple method. Chemical structure of EBTA was characterized by FT-IR and 1 H NMR. The demulsification performance was assessed using bottle-test method, and a comprehensive examination was conducted on the influence of EBTA concentration, settling time, temperature, pH value, and salinity on the demulsifying efficiency (DE). At a low temperature of 40 ℃ and a concentration of 250 mg/L, EBTA achieved a DE of 95.36% in an Emul30 emulsion, while a DE of 100% could be obtained in an Emul70 emulsion. Furthermore, EBTA demonstrated excellent tolerance for salts, acids and alkalis. In addition, the demulsification mechanism of EBTA was investigated using various techniques, such as interfacial tension (IFT), zeta potential, three-phase contact angle and coalescence time of droplets. The results revealed that EBTA had a lower IFT and was easily adsorbed on the oil–water interface. This led to the damage of the interface film and facilitated the oil–water separation. Due to the simple and safe synthesis process and remarkable demulsification performance, EBTA is a promising demulsifier for separating W/O emulsions.
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ACS Applied Materials & Interfaces
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2022
·
IF 10.383
Yuxin Lin,Jingyi Chen,Yuhan Mai,Liyun Chen,Zheng Chen,Guodong Wang,Lina Deng,Peng Xu,Cai Yuan,Longguang Jiang,Mingdong Huang
Air pollution caused by bacteria and viruses has posed a serious threat to public health. Commercial air purifiers based on dense fibrous filters can remove particulate matter, including airborne pathogens, but do not kill them efficiently. Here, we developed a double-grafted antibacterial fiber material for the high-efficiency capture and inactivation of airborne microorganisms. Tetracarboxyl phthalocyanine zinc, a photosensitizer, was first grafted onto the polyester (PET) fiber, followed by coating with chitosan on the surface of PET fiber to make a double-grafted fiber material. Under the irradiation of light with a specific wavelength (680 nm), double-grafted fiber materials killed up to 99.99% of Gram-positive bacteria and Gram-negative bacteria and had a significant antibacterial effect on drug-resistant bacteria. The double-grafted PET fiber showed broad-spectrum antibacterial activities and was capable to inactivate drug-resistant bacteria. Notably, in filtration experiments for airborne bacteria, this double-grafted PET fiber demonstrated a high bacteria capture efficiency (95.68%) better than the untreated PET fiber (64.87%). Besides, the double-grafted PET fiber was capable of efficiently killing airborne bacteria. This work provides a new idea for the development of air filtration materials that can efficiently kill airborne pathogen and has good biosafety.
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PubMed
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PROGRESS IN ORGANIC COATINGS
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2021
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IF 5.161
Qiuying Li,Shanyu Zhang,Kashif Mahmood,Yi Jin,Chen Huang,Ziwen Huang,Sixu Zhang,Wenqiang Ming
The multifunctional polyethylene terephthalate (PET) fabrics with flame retardant, antibacterial and superhydrophobic properties were successfully fabricated by a simple coating approach to enhance the properties of PET fabrics and to make them extensively applicable in a number of fields. The composite coating was composed of ammonium polyphosphate (APP), polydopamine (PDA), PDMS-silica (PDMS-SiO 2 ), and silver nanoparticles (AgNPs). ATR-FTIR spectra, XPS analysis, and SEM-EDS spectrometer were employed to investigate the morphological properties and constitution of these coatings. The flame retardant performance of the multifunctional PET fabrics was determined by LOI, vertical flame test (VFT) and cone calorimeter test (CCT). The results revealed that the APP@SiO 2 -PDA@Ag PET fabrics' LOI value reached 29.0 %, which was 9.5 % higher than that of pristine PET fabrics. Besides, the APP@SiO 2 -PDA@Ag PET fabrics could self-extinguish the fire quickly in the VFT. The peak heat release rate and total heat release of the APP@SiO 2 -PDA@Ag PET fabrics were 34 % and 26 % lower than those of the pristine one. Notably, the multifunctional PET fabrics had excellent antibacterial activity against E. coli and S. aureus. The multifunctional fabrics exhibited superhydrophobicity with a water contact angle (CA) greater than 150° and showed excellent self-cleaning and antifouling properties. More importantly, the multifunctional PET fabrics still retained excellent flame retardant performance and antibacterial properties after multiple washing cycles.
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Polymer-Plastics Technology and Materials
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2020
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IF 0
Yang Pan,Guangfeng Wu,Huifang Ma,Shujie Zhou,Huixuan Zhang
Herein, graft-modified ethylene-1-octene copolymer (POE-g-GMA) and styrene-butadiene-styrene triblock copolymer (SBS-g-GMA) were found to be excellent reactive compatibilizers for immiscible poly(ethylene terephthalate) (PET)/high-density polyethylene (HDPE) blends via in-situ reaction compatibilization. With increase in compatibilizer amount, uniform phase morphology was observed in all the blends. Thus, exhibiting enhanced mechanical properties, especially, the notched Izod impact strength. In comparison with SBS-g-GMA, compatibilizer POE-g-GMA demonstrated greater impact on the compatibility. The addition of 15% POE-g-GMA produced blends with best mechanical properties. Besides, both POE-g-GMA and SBS-g-GMA enhanced the melt viscosity of PET/HDPE blends.
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CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Deshan Cheng,Xue Bai,Junjie Pan,Jihong Wu,Jianhua Ran,Guangming Cai,Xin Wang
Incorporating conductive components into fibrous structure for wearable applications has attracted research attention recently. However, utilizing the flexibility and wearability of textiles to maintain a stable and durable wearable performance is a big challenge, as the intrinsic properties of textiles and the conductivity of the incorporated components have to work synergically in the fibrous system without compromising. In this work, polydopamine-templated PET fabrics were prepared to grow copper nanoparticles (Cu NPs) on the surface of the knitted PET fabrics. The surface morphology, chemical composition and crystalline structure of the Cu NP-coated PET fabrics were investigated by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). The results showed that Cu NP layer was successfully deposited onto the polydopamine-templated PET fabrics. The fabrics showed excellent electrical conductivity due to the loading of Cu NPs. The unique knitted structure together with the durable deposition of Cu NPs resulted in negative change in electrical resistance of the fabrics under strains, granting the fabrics the potential in wearable applications. The Cu NP-coated PET fabrics were demonstrated to be applicable as wearable strain sensors and electrical heaters.
研究领域:
材料科学
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纺织工程
·
纳米技术
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ANALYTICAL SCIENCES
·
2019
·Vol. 35
·期 12
·1341-1345
·
IF 1.618
Xu Wenzhi,Li Xue,Yin Jiwei,Liu Weiyan,Yang Yutao,Li Wei
Hydrazine is an important catalyst and chemical raw material. But it is highly toxic and potentially carcinogenic. We designed a new hydrazine probe based on a synergistic effect by introducing acetate and phthalimide into 2-phenylbenzimidazole (PBI). Comparative experiments proved that “the dual position interaction” had a “synergistic effect” on fluorescence enhancement. The fluorescence enhancement caused by the probe (15.0 fold) is much larger than the sum of the fluorescence enhancement of the two monomer compounds (2.6 and 1.4 folds, respectively). A theoretical calculation showed an inhibition of the PET process and a recovery of the ICT process led to a fluorescence enhancement. The probe was specific to hydrazine and showed a linear response to it in the concentrations range of 0.2–200 μM with a LOD of 0.062 μM (1.99 ppb). Moreover, the probe could detect hydrazine in tap water; the recovery of hydrazine from the tap water was between 98.86–103.28%.
研究领域:
分析化学
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环境科学
·
毒理学
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Li Wang,Hao-wen Zhang,Guo-liang Liu,Di-wen Jiang,Kai-long Li,Jun-yan Lou,Zhe-sheng Feng,Yan Wang
Polyethylene terephthalate/copper (PET/Cu) composite foil, which combines lightweight, flexibility, and excellent electrical conductivity, exhibits promising potential for applications in flexible electronics, portable devices, and lithium-ion battery current collectors. However, achieving efficient and stable metallization of the PET substrate with robust interfacial bonding remains a significant challenge. In this study, an ultra-thin PET/Cu composite foil with excellent adhesion and conductivity was prepared through interfacial engineering. The fabrication process involves oxygen plasma etching, functional silane grafting, and electroplating. The prepared PET/Cu composite foil features a copper layer thickness of approximately 1 μm and presents the adhesion strength meeting the ASTM D3359 5B standard. Meanwhile, the foil achieves a minimum resistivity of 2.137 × 10 −8 Ω m. Compared to the pure copper foil, the PET/Cu composite foil exhibits a 44.89 % reduction in areal mass while maintaining exceptional electrochemical performance, revealing substantial prospects as the next-generation anode current collector for lithium-ion batteries.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Hao Zhang,Junjie Jiang,Mengge Xing,Liangyuan Cheng,Qi Zhang,Shidong Li,Yihan Qian,Xiong Qian,Chi Sun Poon,Jiashen Meng
The widespread use of polyethylene terephthalate (PET) poses serious environmental challenges, while conventional mechanical reprocessing or pyrolysis methods remain inefficient and yield low-value products. Here we present a molten salt-mediated pyrolysis strategy for upcycling waste PET into high-performance anodes for lithium-ion battery. PET is depolymerized in a zinc-containing molten salt to form a metal-organic framework intermediate, which is then carbonized at high temperature to produce porous carbon nanosheets. The molten salt serves simultaneously as a heat-transfer medium and structural template, promoting uniform carbonization, preventing framework collapse, and enhancing graphitization. The resulting carbon as a lithium-ion battery anode exhibits a reversible capacity of 600 mAh g −1 at 0.1 A g −1 and retains 93% of its capacity after 1000 cycles at 0.5 A g −1 . The full cell incorporating LiFePO 4 cathode demonstrates stable cycling over 600 cycles with negligible capacity degradation.
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Materials
·
2021
·Vol. 14
·期 6
·1470
·
IF 3.623
Lifei Wei,Rui Wang,Zhiguo Zhu,Wenqing Wang,Hanguang Wu
Significant improvement in the fire resistance of polyethylene terephthalate (PET) while ensuring its mechanical properties is a tremendous challenge. A novel flame retardant (GO-HCCP, graphene oxide-hexachlorocyclotriphosphazene) was synthesized by nucleophilic substitution of the graphene oxide (GO) and hexachlorocyclotriphosphazene (HCCP) and then applied in PET by an in situ polymerization technique. The scanning electron microscope (SEM) showed a better dispersion of GO-HCCP than GO in the PET matrix. The char yield at 700 °C increased by 32.5% with the addition of GO-HCCP. Moreover, the peak heat release rate (pHRR), peak smoke produce rate (pSPR)and carbon monoxide production (COP)values significantly decreased by 26.0%, 16.7% and 37.5%, respectively, which indicates the outstanding fire and smoke suppression of GO-HCCP. In addition, the composites exhibited higher elastic modulus and tensile strength without compromising the toughness of PET matrix. These significantly reduced fire hazards properties are mainly attributed to the catalytic carbonation of HCCP and the barrier effect of GO. Thus, PET composites with good flame-retardant and mechanical properties were prepared, which provides a new strategy for further flame retardant PET preparation.
研究领域:
材料科学
·
化学工程
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COLLOIDS AND SURFACES B-BIOINTERFACES
·
2026
·
IF 5.9
Zhaoyan Ge,Fengni Liu,Ziwei Chen,Hao Liu,Jiang Yuan
A coating was constructed via LBL self-assembly to improve hemocompatibility. • The coating had an adjusted KSNO payload capacity, achieving a tunable NO release. • The coated film promoted the ECs, while suppressing the over-proliferation of SMCs. • The coated film showed antibacterial, antioxidant, and anti-inflammatory activities. • Biomacromolecular donor of NO was used as a monolayer for LBL for the first time. Nitric oxide (NO) releasing coating is promising for implantable medical devices due to the role of NO in the vascular system. In the study, a multilayered NO-releasing coating was constructed via layer-by-layer (LBL) self-assembly to improve the hemocompatibility of poly(ethylene terephthalate)(PET). A keratin-based NO donor (KSNO) was synthesized and used as a negatively-charged monolayer. Polyethyleneimine (PEI) acted as a positively-charged monolayer. The LBL coating has an adjusted KSNO payload capacity, achieving a tunable NO release in the presence of ascorbic acid (Asc). The coated PET film (n = 5) selectively promoted the proliferation of endothelial cells, while suppressing the excessive proliferation of smooth muscle cells. Furthermore, the coated film demonstrated excellent biocompatibility, along with antibacterial, antioxidant, and anti-inflammatory activities. To the best of our knowledge, it is the first time that a biomacromolecular donor of NO has been used as a monolayer for LBL self-assembly.
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ACS Sustainable Chemistry & Engineering
·
2026
·Vol. 14
·期 31
·13913-13923
·
IF 7.6
Liu Dongya,Fang Chenxiao,Li Xinghui,Xing Shaohan,Chen Xiuping
Tailoring the d-orbital spin state is a powerful strategy to accelerate the sluggish ethylene glycol oxidation reaction (EGOR) in polyethylene terephthalate (PET) upcycling. Herein, we engineered a Y 2 Ru 2 O 7 /CeO 2 (YRO/CeO 2 ) heterojunction featuring an interfacial Ce(4f)−O(2p)−Ru(4d) gradient orbital coupling. This structural modulation steers Ru active sites from an inert low-spin to a highly active high-spin configuration. By optimizing intermediate orbital overlap, this transition significantly lowers the computed energy barrier for the rate-determining C−C cleavage. Consequently, the catalyst delivers 100 mA cm −2 at merely 1.41 V vs RHE. Integrated into a membrane electrode assembly, it operates robustly for over 400 h, yielding a 13.22% energy saving over conventional water splitting. Using authentic PET hydrolysate, our system coproduces high-purity terephthalic acid, potassium diformate, and green hydrogen, validating interface-driven spin engineering as a highly efficient plastic valorization paradigm.
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Advanced Science
·
2026
·
IF 14.1
Wanhao Gao,Wenzhu Hu,Du Tang,Xinxin Liu,Kun Yu,Lixia Feng,Minyu Liao,Wang Lin,Wenqiang Zhu,Sanjay Rajagopalan,Xiaoli Lan,Jixin Zhong,Dao Wen Wang,Dawei Jiang,Xiaoquan Rao
Myocarditis, primarily induced by viral infection, lacks reliable non-invasive imaging for early diagnosis. We developed a novel PET probe, 68 Ga-DOTA-linagliptin (abbreviated as 68 Ga-linagliptin), which targets dipeptidyl peptidase-4 (DPP4), to assess its potential in detecting myocarditis. Western blotting and immunostaining showed an elevated cardiac DPP4 expression in mice with Coxsackievirus B3 (CVB3) myocarditis. Single-cell sequencing analysis and cardiac flow cytometry further revealed that the elevated DPP4 expression predominantly originated from infiltrating immune cells, including T cells, dendritic cells, and B cells. Molecular docking and dynamics simulations, together with a DPP4 enzyme inhibition assay, demonstrated high-affinity and direct binding between 68 Ga-linagliptin and DPP4. 68 Ga-linagliptin showed favorable pharmacokinetics in vivo and shows significantly higher probe uptake in DPP4-overexpressing cells in vitro and in vivo. PET/CT imaging revealed pronounced 68 Ga-linagliptin accumulation within the inflamed myocardium of mice with myocarditis, with minimal uptake in control animals. The PET/CT signal distribution closely matched histologically identified inflammatory regions. Moreover, pretreatment with the unlabeled precursor drug linagliptin effectively attenuated inflammation and improved cardiac function in CVB3-infected mice. These findings indicate that 68 Ga-linagliptin enables sensitive and non-invasive visualization of cardiac inflammation and may offer combined diagnostic and therapeutic benefits for viral myocarditis.
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