CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Weiwen Gu,Jian Liu,Xiaowei Su,Peng Qi,Xinyu Cui,Yujia Wang,Hongfei Li,Xiaoyu Gu,Jinping Xiong,Jun Sun,Sheng Zhang
Multifunctional fabrics for thermal management are becoming increasingly essential in a wide range of application scenarios. However, existing thermal management fabrics exhibit insufficient performance and shortcomings in environmental tolerance. The main challenge lies in the interactions between multiple protective additives, which often lead to detrimental effects on functionality and mechanical properties. This study innovatively develops a multifunctional protective PET fabric (PET/APTES-PSA@Cu-2) by utilizing γ-aminopropyl triethoxysilane (APTES) and phosphorous acid (PSA) to incorporate copper particles into the fabric. This design not only achieves thermal management but also integrates sensing, fire safety, and multiple protective functions. The PET/APTES-PSA@Cu-2 fabric demonstrates excellent electrothermal performance at −60 °C, reaching a peak temperature of 22 °C at 0.4 V. At 422 °C, the fabric achieves a high-temperature insulation efficiency of 248 %. The fabric combines mechanical reinforcement and protective functions, including enhanced tensile strength, abrasion resistance, antibacterial properties, and room-temperature self-healing capabilities. It also exhibits excellent flame-retardant performance, with a 46.56 % reduction in peak heat release rate and a 70.17 % decrease in average effective heat of combustion. Notably, it significantly reduces the smoke toxicity of phosphorus-based flame-retardant PET fabrics (CO production is reduced by 132.43 %, aldehydes are nearly eliminated, and oxygenated polycyclic aromatic hydrocarbons are significantly decreased). Additionally, PET/APTES-PSA@Cu-2 exhibits excellent sensing capabilities, effectively enabling joint health monitoring and thermotherapy. This study provides an effective approach for developing multifunctional protective fabrics with broad application prospects in fields such as firefighting, military equipment, aerospace, and high-performance sportswear.
研究领域:
材料科学
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纺织工程
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防护服装
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功能材料
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Jiabao Li,Dongxia Yan,Xiujie Cheng,Chunrui Rong,Jian Feng,Xin Feng,Jiayu Xin,Qing Zhou,Yi Li,Junli Xu,Xingmei Lu
The methanolysis of polyethylene terephthalate (PET) can address the environmental pollution and resource waste caused by waste PET, and the obtained monomer dimethyl terephthalate (DMT) is easy to separate and purify. However, conventional methanolysis of PET usually uses metal-containing catalysts, resulting in metal residues in the degradation products, which affects subsequent high-value utilization. Meantime, the reaction conditions of high temperature and high pressure promotes the occurrence of side reactions and reduces the yield of the main products. Herein, the nonmetallic deep eutectic solvent (DES) 1,5-diazabicyclo [4.3.0]-5-nonene (DBN)/Phenol was employed as a catalyst for PET methanolysis. 100% PET conversion and 95.3% DMT yield were obtained at 130 °C for 1 h. The possible reaction mechanism was investigated by combining NMR, FT-IR, GPC analysis, and DFT calculations. DBN and phenol were connected through N–H–O hydrogen bonding, where the hydrogen atom interacted with the carbonyl oxygen of PET and the oxygen atom activated the hydroxyl group of methanol. Additionally, GPC analysis showed that the dissolution and degradation of PET were simultaneous, which enhanced mass transfer and facilitated the reaction. The kinetic studies showed that PET methanolysis followed the first-order kinetic model with an activation energy of 103.3 kJ/mol, which was lower than the literature-reported value. This research provides an efficient nonmetallic deep eutectic solvent catalyst for PET methanolysis, which solves the problem of metal residues in the degradation products and reduces the reaction temperature. It is of great significance to simplify the purification steps and improve the economy of regeneration.
研究领域:
化学工程
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环境科学
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材料科学
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产品关联
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2021
·Vol. 413
·期 7
·1955-1966
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IF 4.157
Chen Shibing,Zheng Sining,Jiang Shengjie,Guo Hongyu,Yang Fafu
The selective detection of salicylaldehyde skeleton is of great significance in phytochemistry and biological research but rarely reported. In this research, a simple and highly selective “turn-on” fluorescence sensor ( CDB-Am ) for salicylaldehyde skeleton was developed based on switch of photoinduced electron transfer (PET) and aggregation-induced emission (AIE). CDB-Am bearing amino-cyanodistyrene structure responded to salicylaldehyde in the range of 3.1 to 40 μM with a detection limit of 0.94 μM. The sensing process of formation of Schiff-base adduct CDB-SA was confirmed by 1 H NMR, MS, and FT-IR spectra, revealing that a recovered AIE property accounted for the turn-on fluorescence response of CDB-Am and the intramolecular hydrogen bonding played a crucial role in the disruption of PET process. This sensing ability was successfully applied for both fluorescence qualitative test of salicylaldehyde skeleton on TLC analysis and quantitative detection of salicylaldehyde skeleton with good accuracy in the root bark of Periploca sepium , suggesting the extensive applications in phytochemistry and traditional Chinese herbal medicine. Furthermore, CDB-Am exhibited the first excellent fluorescence imaging ability in detecting salicylaldehyde skeleton in a living system. This work supplied a new strategy of preparing a novel “turn-on” fluorescence probe for detecting salicylaldehyde skeleton in complex environments and living bodies. Graphical abstract
研究领域:
分析化学
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生物化学
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药学
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Weitao Ou,Han Wang,Yingdan Ye,Huaiyuan Zhao,Yibin Zhang,Zhaoyin Hou
Chemical upcycling of waste polyethylene terephthalate (PET) to value-added products can reduce the emission of CO 2 , microplastics and toxic chemicals. In this work, mesoporous H-type Zeolite Socony Mobil-5 (HZSM-5) supported Ru catalyst (Ru/ m -HZSM-5) was synthesized and tested in the hydrogenation of PET degraded chemicals (bis(2-hydroxyethyl) terephthalate , dimethyl terephthalate, diethyl terephthalate, and terephthalic acid). Characterizations disclosed that Ru/ m -HZSM-5 catalyst possesses mesopores (a dominant channel of 5.32 nm), enlarged specific surface area (404 m 2 ·g −1 ), and Ru NPs dispersed highly (40.6 %) compared to that of Ru/HZSM-5. And also, it was found that Ru/ m -HZSM-5 was capable for the hydrogenation of benzene rings in these PET degraded chemicals with large sizes (1.09–1.82 nm). In particular, the conversion of BHET and the selectivity of BHCD over Ru/ m -HZSM-5 reached 95.5 % and 95.6 % at 120 °C within 2 h. And Ru/ m -HZSM-5 could be recycled at least five times without obvious loss of activity and selectivity.
研究领域:
化学工程
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
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2022
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IF 4.132
Yaxin Wang,Huimin Wang,Shuyuan Li,Shaorui Sun
Recycling waste PET plastics into metal–organic frameworks is conducive to both pollution alleviation and sustainable economic development. Herein, we have utilized waste PET plastic to synthesize CoNi-MOF applied to lithium battery anode materials via a low-temperature solvothermal method for the first time. The preparation process is effortless, and the sources’ conversion rate can reach almost 100%. In addition, the anode performance of MOFs with various Co/Ni mole ratios was investigated. The as-synthesized Co0.8Ni-MOF exhibits excellent crystallinity, purity, and electrochemical performance. The initial discharge and charge capacities are 2496 and 1729 mAh g–1, respectively. Even after 200 cycles, the Co0.8Ni-MOF electrode can exhibit a high Coulombic efficiency of over 99%. Consequently, given the environmental and economic benefits, the Co0.8Ni-MOF derived from waste PET plastic is thought to be an appealing anode material for lithium-ion batteries.
研究领域:
材料科学
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环境科学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2023
·
IF 11.1
Jinqiang Wang,Nigel Graham,Kai Sun,Liping Wen,Wenzheng Yu
The development of a detection method for fluoride and chromium (III) ions using a PET membrane with multiple biomimetic nanochannels is descibed. An asymmetric chemical etching technique was used to create conical nanochannels with a PET (polyethylene terephthalate) nuclear track membrane. SEM images showed that the pore diameter of the tip and base sides of the nanochannel were ∼40 nm and ∼180 nm, respectively. The compounds (4-aminophenyl) boronic acid (APBA) and 5-amino-2-nitrobenzoic acid (ANBA), with a specific recognition for F − and Cr 3+ respectively, were modified by a conventional method with EDC and NHS. The current-voltage (I–V) curves of the modified PET membranes in response to the target ions at different concentrations were measured with a picoammeter. Excellent linear relationships between the current value of the I–V curve at −2 V and the concentration of Cr 3+ and F − were established to obtain standard detection curves for Cr 3+ and F − . From these relationships unknown concentrations of Cr 3+ and F − can be quantitatively detected, and the results showed that the detection limits of Cr 3+ and F − were as low as 4.10 nM and 0.46 nM, respectively. The performance of the novel method was compared to conventional ICP-MS analysis by the determination of Cr 3+ in tap water and samples of the Jing Mi diversion canal, and good agreement was found between the two methods. The accuracy and reliability of the method has demonstrated its potential applicability to a wide range of other ionic contaminants.
研究领域:
分析化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
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2020
·Vol. 31
·期 11
·2561-2568
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IF 2.578
Zihao Zhu,Cong Gao,Yucai Shen,Tingwei Wang,Guangjun Hu
Hydroxy-terminated polybutadiene (HTPB) was grafted onto nanosilica via two steps, and then melt extruded with PET and transition metal catalyst. Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) results showed that HTPB successfully bridged to the surface of nanosilica through toluene-2,4-diisocyanate (TDI), and the grafting amount of HTPB accounted for about 11.2% of the total mass of nanosilica. The PET composite samples were also uniaxially stretched into films. Tensile results showed that the tensile strength of composite films was generally higher than that of composite sheets, especially the tensile strength of PET/SiO 2 -HTPB composite film reached 139.8 MPa. After uniaxial stretching, the crystallinity of all films were significantly improved, and fillers accelerated the crystallization rate of PET, which greatly improved the crystallinity of composite materials, thereby contributing to the improvement of the oxygen barrier performance of composite materials. After adding the catalyst, the PET/SiO 2 -HTPB/Co composite film has the lowest oxygen permeability coefficient of 1.05 × 10 −15 (cm 3 ·cm/cm 2 ·s·pa), which was 87.6% lower than that of pure PET sheet. SEM showed that the compatibility between filler and matrix was improved. This study demonstrated that nanosilica grafted with HTPB played a synergistic role in improving the crystallinity of materials and exerting the active oxygen scavenging of HTPB, and uniaxial stretching was helpful for improving the comprehensive properties of composites.
研究领域:
材料科学
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高分子化学
✓ 已验证
产品关联
DOI
高影响因子
GREEN CHEMISTRY
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2024
·Vol. 26
·期 11
·6748-6759
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IF 9.3
Yitian Zhang,Jie Gao,Chao Jiang,Gang Luo,Jiajun Fan,James H. Clark,Shicheng Zhang
Chemical upgrading as a recycling technology for poly(ethylene terephthalate) (PET) waste plastic is an effective way to help solve the current challenges of plastic pollution. Catalytic methanolysis technology enables the depolymerization of PET into high-value dimethyl terephthalate (DMT) monomers under relatively mild conditions, thereby achieving closed-loop recycling of PET waste plastic. In this study, we compared the catalytic efficiency of Cu/SiO2 catalysts prepared by three different methods for the depolymerization of PET to DMT. Cu/SiO2-IM, prepared through the impregnation method, exhibited the highest activity, with PET conversion and DMT selectivity reaching 92.35% and 99.0%, respectively, at 200 °C without any initial gas pressure. The exceptional performance of Cu/SiO2-IM can be attributed to its small metal particles, substantial specific surface area, a high ratio of Brønsted acid sites (BAS) to Lewis acid sites (LAS) and the balance of Cu+ and Cu0 active sites on the catalytic surface. Furthermore, possible reaction mechanisms of Cu-based catalysts in the catalytic methanolysis of PET were investigated: Cu+ initiates the attack on the carbon groups along the long PET chain and enhances the nucleophilic attack during the depolymerization reaction, while Cu0 readily interacts with the hydroxyl group of methanol, leading to the formation of a new ester group between the oxygen atom in the hydroxyl group of methanol and the carbon atom in the CO group of PET polyester. This low-cost and high-efficiency catalytic methanolysis study provides a practical approach to PET waste plastic recycling.
研究领域:
化学工程
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环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2019
·Vol. 304
·期 12
·1900467
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IF 3.038
Dengkun Shu,Peng Xi,Lei Xia,Xiaoqing Wang,Bowen Cheng
This work describes the fluorescence-indicating function to trace acid gases of polyethylene terephthalate (PET) nano-porous luminescence fibers (PNPLFs) through the analysis of correlation between the concentration of acid gas and fluorescence intensity of organic rare earth complexes dispersed uniformly in the PET nano-porous structured fibers. The porous structure and large specific surface area of the PET nano-fibers prepared through electrospinning technology offer the strong adhesive force and good absorption efficiency of PET nano-porous fibers to acid gases. The fast response ability of benzoic acid organic rare earth complexes to pH value gives the PET nano-porous luminescence fibers fluorescence-indicating function to acid gas. Under dry state and in situ conditions, the fluorescence-indicating to acid gases of PET nano-porous luminescence fibers can be completed in 10 s. The precise value is 1 ppm. At the same time, repeated cycling experiments show that the PET nano-porous luminescence fibers have good recycling property, and the recycling life can increase 40-fold. Coupled with the good mechanical performances that the breaking strength achieves 121.6 cN, the PET nano-porous luminescence fibers have better potential in the fluorescence-indicating to acid gases.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Zengxin Zhuang,Kai Wu,Tao Zhang,Yuqi Li,Dongya Yang,Xuejie Yue,Fengxian Qiu
The purification of emulsified water from waste oil has become a major research topic. Stenocara beetle-inspired wettable membranes have emerged as separating-efficient designs for purification of oil due to surface energy difference and surface roughness driven demulsification, but they are still suffering from tedious preparation and low robustness. Herein, a one-step electrospinning/electrospraying process was employed to construct Stenocara beetle-like membrane using waste PET and tetrabutyl titanate (TBT) as raw materials for water-in-oil emulsion separation. Specifically, the synchronized deposition process combines electrospinning high-hydrophobic PET fiber membrane and electrospraying superhydrophilic TiO 2 particles (superhydrophilic bumps) generated from hydrolysis of TBT on the PET membrane surface, leading to a similar structure to Stenocara beetle. During the separation process, the bumpy superhydrophilic TiO 2 particles can capture and aggregate tiny water droplets even though the droplet size is smaller than the membrane pore size. Moreover, this Stenocara beetle-like structure exists both on the surface and interior of the samples, resulting in the boosted demulsification ability and excellent separation efficiency up to 99.8 % and flux as high as 6392 L m -2 h −1 . Stenocara beetle-like membrane also exhibits strong mechanical properties and strain of the membrane is up to 128.8 %. Even after the friction test, the membrane maintained cycling stability and abrasion resistance with separation flux higher than 3500 L m -2 h −1 . Overall, this efficient one-step strategy can open up new avenues to fabricate advanced superwetting membranes in the field of emulsion separation.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
BIOORGANIC CHEMISTRY
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2021
·
IF 5.275
Gaochao Lv,Yinxing Miao,Yinfei Chen,Chunmei Lu,Xiuting Wang,Minhao Xie,Ling Qiu,Jianguo Lin
Programmed death ligand 1 (PD-L1) expression level is a reproducible biomarker for guiding stratification of patients to immunotherapy. However, the most widely used immunohistochemistry method is incompetent to fully understand the PD-L1 expression level in the whole body because of the highly complex PD-L1 expression in the tumor microenvironment. In this work, a novel small-molecular radiotracer [ 18 F]LG-1 based on the biphenyl active structure was developed to evaluate PD-L1 expression in tumors. [ 18 F]LG-1 was obtained by conjugating and radiolabeling with [ 18 F]FDG with high radiochemical purity (>98.0%) and high molar activity (37.2 ± 2.9 MBq/nmol). In vitro experimental results showed that [ 18 F]LG-1 could target PD-L1 in tumor cells and the cellular uptake in A375-hPD-L1 cells (PD-L1 + ) was clearly higher than that in A375 cells (PD-L1-). In vivo dynamic PET images of [ 18 F]LG-1 provided clear visualization of A375-hPD-L1 tumor with high tumor-to-background contrast, and the tumor uptake was determined to be 3.98 ± 0.21 %ID/g at 60 min, which was 2.6-fold higher than that of A375 tumor. These results suggested that [ 18 F]LG-1 had great potential as a promising PD-L1 radiotracer.
研究领域:
医学影像学
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肿瘤学
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核医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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.
研究领域:
材料科学
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环境科学
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生物技术
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公共卫生
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）