COMPOSITES PART B-ENGINEERING
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2023
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IF 13.1
Anchalee Duongthipthewa,Hanmo Zhou,Qingqing Wang,Limin Zhou
Two-dimensional (2D) nanosheets are promising nanomaterials that can be used as sensing elements in numerous applications such as wearable devices , machine tools, and aircraft; however, challenges remain in achieving high sensitivity, wide frequency sensing range, and reliability after long cyclic loading. Suitable ink formulations and preparation parameters for embedded sensors while retaining the structural integrity of the host structure should be determined. In this work, we demonstrated a synergistic combination of l -cysteine-reduced graphene oxide and MXene (LGM) inks in the absence of an additional polymer matrix to establish noninvasive conditions for embedding sensors in prepreg fiberglass/epoxy for smart composites with sensing capabilities. This sensor offers a high gauge factor of 47–1400 in different tensile strain ranges, with unnoticeable changes in the outstanding mechanical properties of the host glass fiber-reinforced polymer (GFRP) laminate. Long-term fatigue three-point bending tests were performed at different frequencies and bending angles, demonstrating excellent durability and stability. The corresponding sensors can also capture vibration signals in the low-high-frequency ranges. The nonintrusive embedment of sensors in GFRP laminates using the new coated non-additive polymer matrix LGM ink successfully preserves the mechanical properties of the host, including its structural integrity, with outstanding sensing performance for low-to-high-frequency signals.
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高影响因子
SOLID STATE IONICS
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2022
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IF 3.699
Fei Chen,P.M. Gonzalez Puente,Yiluo Zhang,Shiyu Cao,Xinqi Lu,Zhuoran Yi,Qiang Shen,Jun Li
All-solid-state lithium‑sulfur batteries are becoming a breakthrough technology for energy storage systems due to its high energy density , high safety and low cost of sulfur. However, its application has been restricted by the isolating properties of sulfur (S), as well as S shuttle effect, S volume effect, and low electron conductivity. In this work, the amorphous sulfur-reduced graphene oxide (S/rGO) composite cathode material was prepared with a smaller particle size of about 2 nm S onto rGO to alleviate the volume effect of S (after 30 cycles, the charge transfer impedance changes about only 3 Ω); at the same time, highly conductive rGO maintain good ionic conduction during charge-discharge cycling. Along with the cathode material, we fabricated a composite polymer electrolyte (CPE) based on poly (ethylene oxide), lithium-ion conductor Li 6.4 Ga 0.2 La 3 Zr 2 O 12 -succinonitrile (PEO 18 - LiTFSI-LLZO-SN) possessing lithium conductivities of 1.16 × 10 −4 and 7.26 × 10 −4 S cm −1 at room temperature and 60 °C, respectively, which can mitigate the transport of polysulfide and be suitable for battery applications. The composite cathode material exhibits an initial discharge capacity of 783mAh g −1 at 45 °C, with a capacity retention rate of 81.2% at 0.2C after 60 cycles. At 60 °C, the battery shows excellent electrochemical cyclability 820mAh g −1 of reserved capacity after stable operation for 100 cycles at 0.2C. The synergy between the CPE and the amorphous S/rGO composite cathode demonstrated in this work may bring insights to improve the cycling performance of all-solid-state Li-S batteries
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高影响因子
TRIBOLOGY INTERNATIONAL
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2022
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IF 5.62
Yuanya Zhang,Yu He,Yongjun Zhou,Meng Liu,Yanling Wang,Junya Yuan,Xuehu Men
In this study, the RGO/CNTs/MXene aerogel-epoxy composites (RCM-EP) were fabricated via freeze drying following by resin perfusion process. RCM aerogel with different pore sizes and morphologies were regulated by changing concentration of MXene . In addition, mechanical properties and thermal behaviors of EP composites with RCM and dispersed fillers were comparatively investigated. The results show that the RCM-EP have a better mechanical strength and thermal properties due to outstanding dispersion performance, interfacial bonding and spatial thermal conductivity network. Simultaneously, tribological test results revealed the wear rate and friction coefficient of EP were reduced by 83.5 % and 53.1 %, respectively, with the incorporation of RCM aerogel . The RCM aerogel inside the EP matrix could improve the bearing capacity of composites and inhibit the accumulation of friction heat via 3D inter-crosslinked network. Moreover, the RCM aerogel was slowly released and participated in friction transfer during sliding process, constructing high-quality transfer film, which endowed the RCM-EP with distinguished tribological performance .
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
·
IF 6.371
Shuguo Yu,Hongyan Zhang,Jun Zhang,Ziyan Hu
Respiratory monitoring is an effective method to assess human health and provides valuable information for early warning and diagnosis of respiratory diseases. However, respiratory monitoring equipment relies on traditional power supply model, which limits real-time monitoring of breathing in fields of outdoor adventure, nomadism and long-distance running. As a solution, a triboelectric nanogenerator (TENG)-driven self-powered humidity sensor for human breath monitoring was prepared. A flexible TENG composed of Ti 3 C 2 T x : PDMS composite film and Ni/Cu polyurethane foam sponge was used as self-powered part of the device, RGO-TiO 2 humidity sensor was used as the respiratory sensing part of the device. Compared with the traditional humidity sensor, TENG-driven self-powered RGO-TiO 2 (TENG-RGTO) shows high response (359.2), fast response/recovery time (1/5.2 s), good reversibility, small humidity hysteresis (0.54%) in the range from 0% RH to 95% RH. Furthermore, TENG-RGTO humidity sensor can realize recognition of breathing states at different frequencies and intensities in real time. Meanwhile, a breathing alarm device driven by humans is designed. This research not only broadens the application range of TENG but also provides a new design idea for self-powered breathing monitoring sensor.
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高影响因子
CARBON
·
2023
·
IF 10.9
Chunyu Yuan,Huijun Lv,Yujin Zhang,Qian Fei,Dongdong Xiao,Hongfei Yin,Zhen Lu,Yongzheng Zhang
Properly engineered heterojunction photocatalysts warrant a more effective way to facilitate the separation of photoexcited electron-hole pairs and consequently bolster the photocatalytic hydrogen evolution performance. Herein, 3D bicontinuous nanoporous reduced graphene oxide (np-rGO) is served as a free-standing supporting matrix for the anchorage of CdS nanoparticles to obtain the highly efficient photocatalysis system for hydrogen production . The bicontinuous internal ligament and open nanopores in 3D nanoporous heterojunction are conducive to multiple reflecting and scattering of the incident light, leading to improved light absorption and utilization capacity. Moreover, the construction of p-n heterojunction with staggered band alignment is achieved in CdS/np-rGO to accelerate the transport of photo-excited carriers. The constructed CdS/np-rGO p-n heterojunction achieves a corresponding hydrogen generation rate of 2171.23 μmol g −1 h −1 , which is 3.6 times in comparison with bare CdS. DFT calculations also indicate the preferable photocatalytic performance of CdS/np-rGO could be assigned to the ideal interfacial charge rearrangement on the heterointerface, which optimizes the H* adsorption kinetic energies and leads to a remarkable enhancement in the charge separation efficiency. It is anticipated this work could provide new sight for making the best usage of sunlight to produce solar fuel.
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高影响因子
Journal of Physical Chemistry C
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2022
·
IF 4.177
Dong-Rui Yang,Chen Chi,Miao Ni,Yi-Bai Sun,Xing-Hua Xia
Electrocatalytic water splitting for hydrogen production provides a solution to the problems of energy depletion and environmental pollution. Platinum has been considered as the best catalyst for this reaction; however, its practical application is limited by its high cost and scarcity. Here, we propose a high performance hydrogen evolution reaction (HER) catalyst comprising a single atomic layer of Pt decorated on an Au nanorod surface (AuNRs@SAC-Pt) using a method of underpotential deposition followed by chemical replacement reaction. This catalyst exhibits superior HER activity via maximized electronic interaction with the substrate and gold plasmonic hot carriers. To retain the stability, dispersion, and good conductivity of the catalyst, graphene was used as the support, forming a hybrid (rGO@AuNRs@SAC-Pt). The Pt single atomic layer structure can fully improve the atomic utilization of Pt, maximizing the electronic interaction with the Au substrate, which significantly promotes the HER catalytic performance. The mass activity of rGO@AuNRs@SAC-Pt is 14 times higher than that of the 20% commercial Pt/C catalyst. Meanwhile, the plasmonic hot electrons of AuNRs can further promote the HER performance of Pt single atom as revealed by the significantly decreased overpotential with laser illumination. This research provides new strategies and theoretical guidance for the design of HER catalysts with high atom utilization and excellent catalytic performance.
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高影响因子
MICROCHEMICAL JOURNAL
·
2022
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IF 5.304
Jintao Liang,Kaiteng Yan,Yutong Liu,Xiaoqing Yao,Fei Guo,Wen Xue,Guiyin Li,Jiejing Chen,Zhide Zhou
1,5-anhydroglucitol (1,5-AG) is an important indicator in the early detection of diabetes. In this study, a high-performance light addressable potentiometric sensor (LAPS) for the detection of 1,5-AG based on reduced graphene oxide-polyacrylamide-ferrocene/gold nanoparticles (rGO-PAM-Fc/AuNPs) as sensing membrane and pyranose oxidase (PROD) as the specific recognition substance was constructed. Among them, rGO-PAM-Fc/AuNPs modification LAPS chip can not only effectively increase the specific surface area and adsorb more PROD , but also enhance the capacitive effect of LAPS and improve the detection sensitivity. 1,5-AG is hydrolyzed by PROD and produces hydrogen peroxide (H 2 O 2 ) that can oxidize divalent ferrocene ions in the rGO-PAM-Fc composite to trivalent ferrocene ions, therefore leads to a change in the membrane potential on the surface of the LAPS chip and causes a shift in the I-V curve, which reflect the change of 1,5-AG concentration. The designed LAPS had a good linearity with 1,5-AG concentration in the range of 100.0–1000.0 μg/mL with a correlation coefficient of 0.99068. The sensitivity was calculated to be 0.1908 mV/μg/mL and a limit of detection (LOD) of 21.74 μg/mL was obtained using three signal-to-noise ratio (S/N = 3). Also, the 1,5-AG biosensor has good specificity, reproducibility and stability, and can be used in human serum samples with the recoveries of 93.62 %–114.52 %. This work provides a highly sensitive, portable and low-cost assay for the detection of 1,5-AG. Prime novelty statement Herein, a high-performance light addressable potentiometric sensor (LAPS) for the detection of 1,5-AG based on reduced graphene oxide-polyacrylamide-ferrocene/gold nanoparticles (rGO-PAM-Fc/AuNPs) as sensing membrane and pyranose oxidase (PROD) as the specific recognition substance was constructed. Among them, rGO-PAM-Fc/AuNPs modification LAPS chip can not only effectively increase the specific surface area and adsorb more PROD, but also enhance the capacitive effect of LAPS and improve the detection sensitivity. 1,5-AG is hydrolyzed by PROD and produces hydrogen peroxide (H 2 O 2 ) that can oxidize divalent ferrocene ions in the rGO-PAM-Fc composite to trivalent ferrocene ions, therefore leads to a change in the membrane potential on the surface of the LAPS chip and causes a shift in the I-V curve, which reflect the change of 1,5-AG concentration. The designed LAPS had a good linearity with 1,5-AG concentration in the range of 100.0–1000.0 μg/mL with a correlation coefficient of 0.99068. The sensitivity was calculated to be 0.1908 mV/μg/mL and a limit of detection (LOD) of 21.74 μg/mL was obtained using three signal-to-noise ratio (S/N = 3). Also, the 1,5-AG biosensor has good specificity, reproducibility and stability, and can be used in human serum samples with the recoveries of 93.62 %–114.52 %. This work provides a highly sensitive, portable and low-cost assay for the detection of 1,5-AG.
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高影响因子
Food Analytical Methods
·
2023
·Vol. 16
·期 4
·709-720
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IF 2.9
Zhou Binbin,Sheng Xingxin,Xie Hao,Zhou Sisi,Huang Lijun,Zhang Zuokun,Zhu Yongbo,Zhong Ming
Nitrofurazone (NF) is a kind of synthetic antibiotic with teratogenic and carcinogenic properties, which is often residual in animal food, so it is of great significance to detect it with high selectivity and rapid. In this study, a molecularly imprinted electrochemical sensor was constructed by electropolymerization for the high-specificity, high sensitivity,and rapid detection of NF in milk. By sequentially modifying reduced graphene oxide (RGO) and gold nanoparticles (AuNPs) on the glassy carbon electrode, the effective surface area and electron transfer ability of the electrode are improved, the double amplification of the electrical signal is realized, and the sensitivity and stability of the sensor are improved. A molecularly imprinted polymer (MIP) is polymerized on the surface of the modified electrode by using NF as a target molecule and o -phenylenediamine ( o –PD) as a functional monomer to improve the specific detection ability of the sensor for NF. The experimental conditions (the number of turns of depositing RGO, the thickness of the MIP, the elution time, and the adsorption time) were optimized to attain the best detection performance of the sensor. Differential pulse voltammetry (DPV) was used to detect NF by redox probe ([Fe(CN) 6 ] 3−/4− ). The constructed sensor exhibited an admirable linear relationship between 5 and 1000 nmol L −1 ( R 2 = 0.9968) and the detection limit was 0.18 nmol L −1 (S/N = 3). Compared to the non-imprinted sensor, the imprinting factor was found to be 3.09. In addition, the sensor also showed excellent repeatability (RSD = 1.17%) and stability, and also showed a good recovery rate in actual sample detection (99.06–101.46%), which is expected to be applied to the detection of other harmful substances in food.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
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IF 8.6
Yingshuang Li,Pengfei Sun,Tingting Liu,Lujun Cheng,Ruifu Chen,Xiaohui Bi,Xiaoping Dong
Photocatalysis is a feasible method for degrading indoor formaldehyde (HCHO) pollutants. To improve the purification efficiency and lower the cost of using noble metals as the primary component of the catalyst, synergistic catalysis involving two catalytic modes, such as thermocatalysis/photocatalysis, has attracted significant attention. In this study, a monolithic catalyst was prepared by loading reduced graphene oxide (rGO) and cerium dioxide (CeO 2 ) on a nickel foam (NF) matrix. It was observed that the HCHO removal efficiency could be > 93 % under xenon light. The pre-deposited rGO on the NF matrix served as the photothermal conversion layer and contributed to the uniform and stable loading of CeO 2 . The surface temperature of this synthesized monolithic catalyst could rapidly rise to 170 °C. In addition, the heat was distributed evenly because of the increased near-infrared (NIR) light absorption caused by the added rGO and high electron mobility owing to the heat-conducting property of NF. At this temperature, the oxidation of HCHO was stimulated not only by the lattice oxygen of CeO 2 but also by the production of O 2 – via oxidation by photogenerated electrons. In addition, O 2 – would reoxidize Ce 3+ to Ce 4+ on oxygen vacancies and accelerate the lattice oxygen consumption and supply cycle to reinforce the existing Mars-van Krevelen (MvK) mechanism.
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高影响因子
Frontiers in Chemistry
·
2022
·
IF 5.545
Lu Xin-Yang,Li Jing,Kong Fen-Ying,Wei Mei-Jie,Zhang Pei,Li Ying,Fang Hai-Lin,Wang Wei
An electrochemical sensor for sensitive sensing of acyclovir (ACV) was designed by using the reduced graphene oxide–TiO2–Au nanocomposite-modified glassy carbon electrode (rGO–TiO2–Au/GCE). Transmission electron microscopy, X-ray diffractometer, and X-ray photoelectron spectroscopy were used to confirm morphology, structure, and composition properties of the rGO–TiO2–Au nanocomposites. Cyclic voltammetry and linear sweep voltammetry were used to demonstrate the analytical performance of the rGO–TiO2–Au/GCE for ACV. As a result, rGO–TiO2–Au/GCE exerted the best response for the oxidation of ACV under the pH of 6.0 PB solution, accumulation time of 80 s at open-circuit, and modifier amount of 7 µl. The oxidation peak currents of ACV increased linearly with its concentration in the range of 1–100 µM, and the detection limit was calculated to be 0.3 µM (S/N = 3). The determination of ACV concentrations in tablet samples also demonstrated satisfactory results.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
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IF 7.139
Chunmiao Zhang,Mingxin Wei,Lianjin Chen,Meiling Ye,Xianzhen Nie,Aimei Zhu,Qiugen Zhang,Qinglin Liu
The poor long-term stability of anodic catalysts is one of the important factors that hinder the commercial application of direct ethanol fuel cells. The main reason is that toxic intermediates (such as CO) produced in the process of ethanol oxidation are easy to cover the active site, resulting in the catalyst being poisoned and deactivated in a short time. In this work, the prepared catalysts by the co-reduction method use didecyldimethylammonium chloride (DODAC) as the structure directing agent . The PdAg microporous alloy nanospheres in situ growth can effectively separate the GO sheets and slow down the stacking by self-intercalation effect. And introduced Ag into Pd lattice effectively modify the electronic structure of Pd and form OH − at a lower potential, which is helpful the oxidation of CO and weakens the poisoning effect of CO, improving the catalytic performance. After 20,000 s stability test, the residual current density value of mPd 1 Ag 1 @FrGO is 659 mA mg Pd - 1 , which is 20 times of Pd/C (JM). After 4 cycles of 20,000 s i-t test, its current density only dropped by 18.2%. In addition, the catalyst mPd 1 Ag 1 @FrGO has good regeneration ability. After 6 cycles of regeneration, the residual current density value is 878.1 mA mg Pd - 1 .
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2022
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IF 4.598
Miao Gu,Haolin Xiao,Shanshan Wei,Zhencheng Chen,Liangli Cao
Dopamine (DA) is an important neurotransmitter and one of the biomarkers of psychiatric diseases such as Parkinson's disease and schizophrenia. Therefore, it is urgent to explore an effective method to realize rapid and sensitive detection of DA. In this paper, porous zinc oxide microspheres-functional reduced graphene oxide composites (ZnO-rGO) were successfully prepared by a simple solution method, then gold nanoparticles (AuNPs) were combined by electrodeposition. Zinc oxide porous microspheres-reduced graphene oxide-gold nanoparticles nanocomposites were used to modify the screen-printed electrode (ZnO-rGO-AuNPs@SPE) to fabricate a fast and efficient non-enzymatic electrochemical sensing platform for detecting DA in biological samples. The sensor obtained a good linear range of 0.5 μM to 100 μM and a low detection limit of 0.294 μM at S/N = 3. Additionally, a sensor was applied to the determination of DA in human biological samples, and it showed good stability and reproducibility, making it an excellent candidate material in the field of biosensors.
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高影响因子
危险品化学品经营许可证（带存储）