ACS Nano
·
2026
·
IF 17.3
Yaming Liu,Zhenle Hu,Xinrui Zhu,Xinyu Li,Tong Zuo,Yutian Zhao,Guoqiang Liu,Yanting Cheng,Chao Zhi,Jiaguang Meng,Xiang Li,Jingnan Wang,Mingshang Jin
While traditional Pt-based catalysts suffer from inadequate selectivity and stability in electrocatalytic ethylene glycol oxidation reactions, we present a general and scalable synthesis strategy, fabricating a broad multimetallic Pt-based alloy nanowires (NWs) library from binary to quinary. Among these, the PtAgCuRhRu NWs exhibit exceptional performance, with a mass activity ∼8 times higher than that of Pt/C and a Faradaic efficiency for glycolic acid (GA) reaching 93.49%. In the membrane electrode assembly electrolyzer, the catalyst maintained its activity over 140 h with 99% GA selectivity. In situ experimental and theoretical calculations reveal oxygenophilic Rh and Ru promote *OH adsorption, facilitating the conversion of *COCH2OH to GA and the oxidative removal of COads, enhancing activity and stability. Additionally, the high energy barrier for C–C bond cleavage suppresses undesired decomposition due to the introduction of Ag and Cu, leading to superior GA selectivity.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Rui Liu,Yiming Gou,Daming Feng,Chunhua Ge,Kai Jia,Xiangdong Zhang
Epoxy resin (EP) has been considered predominant polymer protective film because of high thermal stability and chemical stability. However, the intrinsic brittleness and poor tribological properties significantly limited extensive application. Herein, polyethylene glycol (PEG) flexible chains and inorganic nanofillers hydroxylated boron nitride nanosheets (BNNS-OH) were introduced to EP matrix in order to improve the performance. The effect of introducing PEG and BNNS-OH on flexibility, thermal conductivity, tribological behaviors of EP were explored. The results demonstrated that EP/PEG composite film exhibited flexibility at PEG additive concentration of 30 wt%. The flexibility was maintained even though adding rigid filler BNNS-OH. The thermal conductivity of EP/PEG/BNNS-OH was increased by 57 % at BNNS-OH additive concentration of 5 wt%. The result of tribological tests revealed EP/PEG/BNNS-OH exhibited outstanding tribological properties. This work offers novel thought for development with flexible, high thermal conductivity and outstanding tribological polymer-based composites.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Tong Liu,Tao Zhang,Xinyue Du,Linhu Jin,Chunfeng He,Kewei Zhang,Mingzhe Zhang
With the advancement of automotive intelligence and electrification, ethylene glycol (EG), as a critical component in antifreeze and coolant systems, has gained increasing industrial significance. However, the volatile nature of EG poses potential health hazards, making the development of high-performance EG gas sensors an urgent priority. In this study, a CuO-In(OH) 3 Type II p-n heterojunction was directly fabricated through a solvothermal method followed by 200°C annealing. The developed CuO-In(OH)₃-based gas sensor demonstrates exceptional EG sensing performance, exhibiting a response magnitude of 21.3 toward 50 ppm EG at 95°C – 7.9 times higher than that of pure CuO (2.7). Notably, the operating temperature was reduced from 120°C (pristine CuO) to 95°C while maintaining excellent repeatability (6 cyclic tests) and long-term stability (26-day continuous operation). The first engineered heterojunction, characterized by its nanoflower-cube hierarchical architecture, not only provides a novel strategy for designing efficient EG gas sensors but also demonstrates promising potential in environmental safety assurance.
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IEEE SENSORS JOURNAL
·
2026
·
IF 4.5
Feiyan Pan,Keqi Wu,Shuo Wang,Ke Tang,Xuewei Zhu,Xiaofeng Wei
Hollow nanostructured materials possess a large specific surface area and excellent adsorptive properties, rendering them highly attractive for gas-sensing applications. In this work, a porous core-shell CeO2 architecture was synthesized via a hydrothermal route and subsequently functionalized with polyethyleneimine/polyethylene glycol (PEI/PEG) to yield PEI/PEG/CeO2 composites for room-temperature CO2 detection. Scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) surface-area analyses confirmed the high specific surface area and the formation of the porous core-shell CeO2 morphology, while SEM coupled with energy-dispersive X-ray spectroscopy (EDS) verified successful immobilization of PEI/PEG on the CeO2 surface. Gas-sensing tests demonstrated that the PEI/PEG/CeO2 sensor achieved a detection limit as low as 200 ppm CO2; at 1500 ppm CO2, the sensor exhibited a frequency shift of 86 Hz and rapid response/recovery times of 22 s and 70 s, respectively. Furthermore, the sensor showed high sensitivity,excellent repeatability and strong resistance to humidity. The outstanding CO2-sensing performance is attributed to the synergistic effects of the porous core-shell structure, the selective recognition afforded by the amine functional groups, and the formation of n-n heterojunctions at the CeO2-PEI interface. These findings provide deeper insight into the gas-sensing mechanisms and performance characteristics of PEI/PEG-functionalized CeO2 composites.
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2015
·Vol. 31
·期 4
·651-657
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IF 0.875
Xiao Yanlong,Zhao Lei,Shi Yongfeng,Liu Ning,Liu Yongli,Liu Bin,Xu Qinghua,He Chaoliang,Chen Xuesi
Percutaneous coronary intervention(PCI) has become an important method for the treatment of the patients with coronary heart disease; however, problems, such as vascular endothelial inflammation, late thrombosis, and stent restenosis still exist as a result of poor biocompatibility of the materials. To enhance the biocompatibility, methoxy poly(ethylene glycol)(mPEG) was immobilized on the surface of AISI 316 grade stainless steel(SS)(AISI: American Iron and Steel Institute). First, silanized mPEG was synthesized by the direct coupling of mPEG with 3-isocyanatopropyltriethoxysilane(IPTS) via urethane bonds, and the silanized mPEG was then grafted on the surface of SS that was hydroxylated with piranha solution. The results obtained from contact angle goniometry, X-ray photoelectron spectroscopy(XPS), and atomic force microscopy(AFM) confirm that the mPEG modified steel contained more C and Si and less Fe and Cr on its surface, exhibiting a morphological change and decrease in the contact angle. The biocompatibility of the mPEG modified SS was evaluated with fibrinogen adsorption, platelet activation and adhesion, and human umbilical vein endothelial cell(HUVEC) adhesion. Fibrinogen adsorption, platelet activation, and adhesion were clearly suppressed on the surface-modified steel. In addition, human umbilical vein endothelial cell(HUVEC) could adhere and proliferate on the surface of the mPEG-modified SS. This study indicates that the modification of 316L SS with mPEG could enhance the biocompatibility and provide a primary experimental foundation for the development of next-generation coronary stent materials for clinical application.
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Polymers
·
2019
·Vol. 11
·期 12
·2043
·
IF 3.164
Hai-Chen Zhang,Ben-hao Kang,Xinxin Sheng,Xiang Lu
A series of novel bio-based form stable composite phase-change materials (fs-CPCMs) for solar thermal energy storage and management applications were prepared, using the pomelo peel flour (PPF) as the supporting matrix and poly (ethylene glycol) (PEG) or isocyanate-terminated PEG to induce a phase change. The microscopic structure, crystalline structures and morphologies, phase change properties, thermal stability, light-to-thermal conversion behavior, and thermal management characteristics of the obtained fs-CPCMs were studied. The results indicate that the obtained fs-CPCM-2 presented remarkable phase-change performance and high thermal stability. The melting latent heat and crystallization heat for fs-CPCM-2 are 143.2 J/g and 141.8 J/g, respectively, and its relative enthalpy efficiency (λ) is 87.4%, which are higher than most reported values in the related literature. The obtained novel bio-based fs-CPCM-2 demonstrated good potential for applications in solar thermal energy storage and waste heat recovery.
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Reaction Chemistry & Engineering
·
2022
·Vol. 7
·期 12
·2636-2649
·
IF 5.2
Chunrui Han,Rui Wang,Chang Shu,Xingang Li,Hong Li,Xin Gao
Reactive distillation is an effective technique for separating azeotropic systems, especially ethylene glycol (EG) and 1,2-butanediol (1,2-BDO), and mastering the reaction network and competitive kinetics is vital for the successful design of a reactive distillation process. Herein, a reactive distillation process using dimethyl carbonate (DMC) as a reactant to recover EG and the high-value-added byproduct 1,2-BC was developed. The reaction systems EG–DMC, 1,2-BDO–DMC, and EC–1,2-BDO were investigated through experiments in the presence of the catalyst KIP321p and the kinetic parameters were subjected to regression analysis; a unified power-law model describes the kinetics of transesterification reactions very well. The heat absorption values of the EG–DMC and 1,2-BDO–DMC systems are 7.18 kJ mol−1 and 9.56 kJ mol−1, respectively; as EG has fewer ethyl groups in its molecular structure than 1,2-BDO, this lower spatial resistance resulted in a faster reaction rate under the same conditions. The enthalpy change of the EC–1,2-BDO system is 1.53 kJ mol−1, and the small positive value indicates that BC is more thermodynamically stable than EC. The transesterification of EG/1,2-BDO with DMC was also investigated experimentally, and the experimental data were compared with the predicted results from the reaction kinetic models obtained in this work. These kinetic parameters can be employed to design reactive distillation methods for the implementation of transesterification reactions of mixed glycols with DMC.
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BIORESOURCE TECHNOLOGY
·
2022
·
IF 11.889
Rongxin Ling,Weiqi Wei,Yongcan Jin
In this work, HCl catalyzed ethylene glycol–water pretreatment (HCl/EG-H 2 O) of sugarcane bagasse (SCB) was explored with response surface methodology (RSM) and single factor analysis, which aim to investigate the influence of pretreatment variable on pretreated solid cellulose enzymatic conversion. The result showed that HCl/EG-H 2 O pretreatment could selectively extract ∼89.9 % xylan and ∼61.2 % lignin in SCB, meanwhile maintain a relatively high cellulose retention (∼86.8 %). Pretreatment of SCB at 120 °C for 60 min with 1.00 % HCl and 90 % EG obtained the pretreated solid having maximum cellulose enzymatic conversion of 88.7 % under 10 FPU/g enzyme dosage, this enhancement of cellulose enzymatic conversion mainly attributed to structure change of SCB in pretreatment. The adding of enzymatic additives into the hydrolysis process could not only improve hydrolysis efficiency but also lower the enzyme dosage. Besides, the linear relationship between substrate characteristic parameters (such cellulose content, lignin removal rate etc.) and cellulose conversion were observed.
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PubMed
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SEPARATION SCIENCE AND TECHNOLOGY
·
2021
·
IF 2.475
Chunyao Zheng,Ke Li,Chao Zhang,Dongshun Deng
Weak basic guanidinium acetylacetonate ([TMG][acac]) was synthesized and blended with PEG200 to construct hybrid absorbent for SO2. The composition was optimized on the basis of viscosity and SO2 absorption performance. For the preferred 20% [TMG][acac]-PEG200 mixture, the effect of various parameters were systematically investigated. Results showed that the maximum mass ratio of SO2 to [TMG][acac] was 0.838 and 0.331 at 30°C for pure and 10% SO2, respectively. The mixture was easily recycled five times. The present SO2 capture process using [TMG][acac]-PEG200 mixtures was a promising method for SO2 removal with both good reversibility and high absorption capacity.
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JOURNAL OF BIOMATERIALS APPLICATIONS
·
2021
·
IF 2.646
Xiang Zhang,Zhenhao Yan,Guotao Guan,Zijing Lu,Shujie Yan,Azhen Du,Lixia Wang,Qian Li
Natural cartilage tissue has excellent mechanical properties and has certain cellular components. At this stage, it is a great challenge to produce cartilage scaffolds with excellent mechanical properties, biocompatibility, and biodegradability. Hydrogels are commonly used in tissue engineering because of their excellent biocompatibility; however, the mechanical properties of commonly used hydrogels are difficult to meet the requirements of making cartilage scaffolds. The mechanical properties of high concentration polyethylene glycol diacrylate (PEGDA) hydrogel are similar to those of natural cartilage, but its biocompatibility is poor. Low concentration hydrogel has better biocompatibility, but its mechanical properties are poor. In this study, two different hydrogels were combined to produce cartilage scaffolds with good mechanical properties and strong biocompatibility. First, the PEGDA grid scaffold was printed with light curing 3D printing technology, and then the low concentration GelMA/Alginate hydrogel with chondral cells was filled into the PEGDA grid scaffold. After a series of cell experiments, the filling hydrogel with the best biocompatibility was screened out, and finally the filled hydrogel with cells and excellent biocompatibility was obtained. Cartilage tissue engineering scaffolds with certain mechanical properties were found to have a tendency of cartilage formation in in vitro culture. Compared with the scaffold obtained by using a single hydrogel, this molding method can produce a tissue engineering scaffold with excellent mechanical properties on the premise of ensuring biocompatibility, which has a certain potential application value in the field of cartilage tissue engineering.
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Journal of the Mechanical Behavior of Biomedical Materials
·
2021
·
IF 3.902
Feng Hu,Hailin Lu,Zishuo Ye,Shoujing Zhang,Wenbo Wang,Li Gao
New fabrication methods and lubrication materials must be developed to improve the lubrication performance of artificial joints and increase the lubrication duration. Herein, a novel polyvinyl alcohol/polyethylene glycol/graphene oxide (PVA/PEG/GO) hydrogel was prepared by a physical cross-linking method, and then the hydrogel and its sustained-release solution were used as lubricant for friction evaluation. The results demonstrated that the slow-release gel solution has good lubrication performance, and coefficient of friction (COF) is only 0.04, which is much lower than the COF of distilled water (about 0.08) under the same conditions. The structure characterization results revealed that no new materials are formed in the gel. The results of thermogravimetric analyses and differential scanning calorimetry demonstrated that the addition of GO may improve the network crosslinking structure of the PVA/PEG hydrogel and improve its mechanical strength . In addition, PVA/PEG/GO hydrogel has superior self-healing function. The self-healing hydrogel did not break again after being pulled under 200 G of weights. The PVA/PEG/GO hydrogel with excellent slow-release lubricating performance and self-healing properties provides a novel candidate for design of long-term lubricating artificial joints, and is expected to promote the progress of artificial joint lubrication applications.
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FUEL
·
2021
·
IF 6.609
Xin Yu,Lincai Peng,Jun Dai,Hui Li,Chaonan Tao,Fa Yang,Junhua Zhang
Conversion of carbohydrates at concentrated feeds represents highly desirable for the industrial deployment of biobased fuels and chemicals but challenging. One key bottleneck is that the excessive formation of polymeric humins greatly diminishes the utilization rate of feedstocks and the destination product yield. We report that the use of ethylene glycol as co-solvent for acid-catalyzed conversion of concentrated sugars enhances desirable alkyl levulinate (AL) production compared to reactions carried out in single monohydric alcohols (e.g., methanol, ethanol). Ethylene glycol served not only as a solubilizer of sugars in the reaction medium to lessen their tendency to polymerize by protecting reactive hydroxyl groups in sugars with alcohols, but also as a supporter to restrain the condensation of furan intermediates. With 10 vol% ethylene glycol as the co-solvent of ethanol, an improved yield of ethyl levulinate (EL) from 45% to 56% was accomplished from concentrated feeds of glucose (200 g/L). In particular, high space time yield and EL concentration respectively up to 30 kg/m 3 ·h and 90 g/L were obtained in a batch reactor. The solvents and catalyst could be isolated from the products, and showed good reusability. This contribution opens a reliable avenue for converting highly concentrated feeds of biomass-related sugars to oxygenated liquid fuels and versatile chemicals.
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