JACS Au
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2023
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IF 8
Huiling Liu,Xin Zhang,Zixiao Lv,Fang Wei,Qing Liang,Lijuan Qian,Zhan Li,Ximeng Chen,Wangsuo Wu
Selective ion separation from brines is pivotal for attaining high-purity lithium, a critical nonrenewable resource. Conventional methods encounter substantial challenges, driving the quest for streamlined, efficient, and swift approaches. Here, we present a graphene oxide (GO)-based ternary heterostructure membrane with a unique design. By utilizing Zn2+-induced confinement synthesis in a two-dimensional (2D) space, we incorporated two-dimensional zeolitic imidazolate framework-8 (ZIF-8) and zinc alginate (ZA) polymers precisely within layers of the GO membrane, creating tunable interlayer channels with a ternary heterostructure. The pivotal design lies in ion insertion into the two-dimensional (2D) membrane layers, achieving meticulous modulation of layer spacing based on ion hydration radius. Notably, the ensuing layer spacing within the hybrid ionic intercalation membrane occupies an intermediary realm, positioned astutely between small-sized hydrated ionic intercalation membrane spacing and their more extensive counterparts. This deliberate configuration accelerates the swift passage of diminutive hydrated ions while simultaneously impeding the movement of bulkier ions within the brine medium. The outcome is remarkable selectivity, demonstrated by the partitioning of K+/Li+ = 20.9, Na+/K+ = 31.2, and Li+/Mg2+ = 9.5 ion pairs. The ZIF-8/GO heterostructure significantly contributes to the selectivity, while the mechanical robustness and stability, improved by the ZA/GO heterostructure, further support its practical applicability. This report reports an advanced membrane design, offering promising prospects for lithium extraction and various ion separation processes.
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Soft Robotics
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2023
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IF 7.9
Xingmiao Fang,Kun Wei,Runhuai Yang
Pneumatic soft robot attracts extensive attention because of its own characteristics. It has great application potential in medical and other fields. Although the recent improvement of the soft robot shows great potentials for delicate manipulations, the development of completely untethered pneumatic intelligent soft robots remains challenging. This article introduces a novel type of untethered soft pneumatic actuator with embedded multiple sensing capabilities. The untethered drive of the soft pneumatic actuator is achieved by near-infrared-induced liquid-gas phase transition. In addition, a soft conductive resin was developed to make flexible sensors. Embedded flexible sensors enable bending and temperature sensing of soft actuators. With Digital Light Processing three-dimensional printing, the rapid fabrication of soft actuators and flexible sensors was realized. This article demonstrates the potential of the proposed untethered soft actuators with embedded multiple sensing capabilities as an important contribution to the research of completely untethered intelligent soft robots.
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PROCESS BIOCHEMISTRY
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2023
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IF 4.4
Kongliang Xu,Xiaoqing Chen,Qingtao Chen,Hongpeng Pan,Renchao Zheng,Yuguo Zheng
Thermodynamic-driven biomanufacturing of fructose catalyzed by phosphorylation and dephosphorylation cascade reactions is considered as the future of industrial fructose production due to its high theoretical yield of 100 %. Co-immobilizing all four cascade enzymes involved on solid materials is crucial for its successful industrial application, as it significantly reduces costs through enzyme reusage. Graphene oxide served as a multi-enzyme carrier in the thermodynamic-driven biosystem of fructose and displayed high loading capacities for the four cascade enzymes. The resulting co-immobilized biosystem based on graphene oxide exhibited superior biocatalytic performance than the other support materials. Additionally, it yielded 54.7 % fructose from maltodextrin . Utilizing two additional enzymes to improve the substrate utilization, an 85.2 % fructose yield was achieved, surpassing the current industrial-scale fructose production process employing monosaccharide isomerization . This study sheds light on the potential industrial applications of thermodynamic-driven biomanufacturing systems for fructose production.
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TRIBOLOGY INTERNATIONAL
·
2023
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IF 6.2
Yuting Li,Wenjin Yang,Guojuan Liu,Hao Li,Xiaoqiang Fan,Minhao Zhu
Although deep eutectic solvents (DESs) have shown excellent surface modification and lubrication properties, there have been seldom reports concerning the effect of those characters on the tribological behavior of nanoparticles as non-polar oil additives. Here, we grafted tetrabutylammonium chloride and octanol-based oil-soluble DES onto the base plane or interlayer of GO through a long aliphatic chain, chloride ion and C-N covalent functionalization, forming functionalized GO (DES/GO). The DES/GO could well disperse in a nonpolar polyalphaolefin base oil (PAO 20) to construct DES/GO hybrid PAO 20. Moreover, the friction and wear of DES/GO hybrid PAO 20 oil decreased by 35% and 41% compared with those of pure PAO 20 oil. The splendid interfacial lubrication depends on the formation of uniform, dense, and strong graphene-like tribofilm to shield the tribo-interfaces against wear. And the grafted DES on GO further participates in the tribochemical reaction to form the Fe x O y , FeCl 2 or FeCl 3 and tetraalkylammonium salt tribochemical film. The self-lubricating performance of GO and tribochemical reaction of DES together achieve a synergistic lubrication effect.
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Materials
·
2023
·Vol. 16
·期 23
·7278
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IF 3.4
Wubo Chu,Wen Dai,Bo Wang,Chen Ye,Weiping Xie,Bing Yin,He Li,Nan Jiang
Anthracite-associated graphite is an important graphite resource with a wide range of applications besides being used as a fuel. This paper introduces a method for evaluating the graphite equivalent evaluation of anthracite-associated graphite. A series of graphite-anthracite standard samples with known graphite content were prepared, and their Raman spectra were obtained using a Raman spectrometer. By employing peak-fitting analysis to decipher the peak spectrum information of the D peak and G peak, trends in the peak position, peak intensity ratio, half-width, and peak area of the D peak and G peak in standard samples with different graphite contents were obtained. Subsequently, a standard curve and fitting equation were established using the peak area data. The goodness of fit for the equation (R2) was 0.9984. Then the equation was used to evaluate 100 natural anthracite-associated graphite samples with unknown graphite content, obtaining a corresponding graphite equivalent evaluation.Keywords:anthracite-associated graphite;graphite equivalent evaluation;Raman
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CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Lin Li,Jiarong Wang,Chaorui Xue,Qing Chang,Jinlong Yang,Shengliang Hu
Porous materials capable of efficiently remediating crude oil spills are needed for resource and environmental sustainability. However, a big challenging is to achieve high adsorption capacity and speed owing to high viscosity and sluggish flowability of crude oils. We here report a novel hierarchical carbon architecture featuring zero-dimentional carbon dots assembled on reduced graphene oxide nanosheets upon commercial sponge. It exhibits extraordinary sorption capacity of 97.4 g/g and provides a highly modular photothermal and electrothermal conversion platform for rapidly heating crude oils with the minimum heat losses, enabling efficient adsorption of crude oils. Thanks to its excellent energy management ability, the energy efficiency for solar to crude oil adsorption reaches to 248 % with the aid of proper input voltage. Besides, the crude oil value recycled in one hour is 3.15 ∼ 4.43 times than the cost of materials. Therefore, this work offers a new material architecting system for addressing catastrophic large-area spills of crude oils.
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Small
·
2023
·
IF 13.3
Jincheng Wang,Rui Chen,Dongsheng Ji,Wenjun Xu,Wenzhuo Zhang,Chen Zhang,Wei Zhou,Tao Luo
A flexible sensor that simultaneously senses temperature and pressure is crucial in various fields, such as human-machine interaction, artificial intelligence, and biomedical applications. Previous research has mainly focused on single-function flexible sensors for e-skins or smart devices, and integrated bimodal sensing of temperature and pressure without complex crosstalk decoupling algorithms remains challenging. In this work, a flexible bimodal sensor is proposed that utilizes spatial orthogonality between in-plane thermoelectricity and out-plane piezoresistivity, which enables fully decoupled temperature-pressure sensing. The proposed bimodal sensor exhibits a high sensitivity of 281.46 µV K −1 for temperature sensing and 2.181 kPa −1 for pressure sensing. In the bimodal sensing mode, the sensor exhibits negligible mutual interference, providing a measurement error of ± 7% and ± 8% for temperature and pressure, respectively, within a 120 kPa pressure range and a 40 K temperature variation. Additionally, simultaneous spatial mapping of temperature and pressure with a bimodal sensor array enables contact shape identification with enhanced accuracy beyond the limit imposed by the number of sensing units. The proposed integrated bimodal sensing strategy does not require complex crosstalk decoupling algorithms, which represents a significant advancement in flexible sensors for applications that necessitate simultaneous sensing of temperature and pressure.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
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IF 8.7
Yu Rong,Zhenghui Zhao,Qinyou An,Quanling Yang,Chuanxi Xiong
Aqueous zinc-ion batteries (AZIBs) have emerged as attractive alternatives to conventional lithium-ion battery systems, owing to their high theoretical capacity, inherent safety, environmental benignity, and cost effectiveness. However, the long-term stability and practical viability of zinc-ion batteries are impeded by dendritic zinc deposition and concurrent hydrogen evolution reaction (HER). Here, a 2,2,6,6-tetramethyl piperidinyl-1-oxyl (TEMPO)-oxidized cellulose nanofibril/reduced graphene oxide (TOCN/rGO) interlayer was constructed, which can contribute to effective regulation of Zn 2+ diffusion along the two-dimensional pathway and isolate Zn anode from water to uniformly guide zinc ions deposition and inhibit the undesirable HER. Compared with bare Zn, the TOCN/rGO@Zn symmetrical battery demonstrates stable cycling performance for over 1000 h at current densities of 0.5 and 2 mA cm −2 , while maintaining an exceptionally low overpotential (50 mV). When paired with an MnO₂ cathode, the assembled full cell maintains stable electrochemical performance and remarkable rate capability over repeated cycling. This strategy effectively alleviates dendritic zinc growth and suppresses HER during cycling, thereby offering an alternative pathway toward the practical application of AZIBs.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Yangjie Li,Yirong Tian,Yu Fu,Liang Pang,Yang Li,Peng Xiao,Zhuan Li
Smart surface coatings have been proven to be an effective strategy to significantly enhance the electronic conductivity and cycling stability of silicon-based anode materials. However, the single/conventional coatings face critical challenges, including low initial Coulomb efficiency (ICE), poor cyclability, and kinetics failure, etc. Hence, we proposed a dual immobilization strategy to synthesize graphene supported anatase TiO 2 /carbon-coated porous silicon composite (denoted as PSi@TiO 2 @C/Graphene) using industrial-grade ferrosilicon as lithium storage raw materials through the simple etching, combined with sol–gel and hydrothermal coating processes. In this work, the dual immobilization from the “confinement effect” of the inner TiO 2 shell and the “synergistic effect” of the outer carbon shell, improves the kinetics of the electrochemical reaction and ensures the integrity of the electrode material structure during lithiation. Furthermore, the introduction of the graphene substrate offers ample space for dispersing and anchoring the Si-based granules, which in turn provides a stable 3D conductive network between the particles. As a result, the PSi@TiO 2 @C/Graphene electrode delivers high reversible capacity of 1605.4 mAh g −1 with 93.65% retention at 0.5 A g −1 after 100 cycles (vs. 4th discharge), high initial Coulomb efficiency (82.30%), and superior cyclability of 1159.9 mAh g −1 after 250 cycles. The above results suggest that the particle structure has great potential for applications in Si-based anode and may provide some inspiration for the design of other energy storage materials.
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JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
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2023
·
IF 3.6
Qinming Xu,Hui Chen,Junming Zhu,Xing Li,Jingang Yang,Xiaocui Deng,Qingmei Yuan
In this study, the PEG-Glu-Lys-Glu copolymer drug delivery system (GO/PEG-Glu-Lys-Glu) is prepared using glutamate-lysine-glutamate (Glu-Lys-Glu) modified polyethylene glycol (PEG) and connected graphene oxide nanosheets (GO). The multiple carboxyl groups of Glu-Lys-Glu and π–π interactions of GO can increase drug loading rate, and the fluorescence characteristics of GO could monitor the distribution of drug-loading systems in cells and the uptake of cells without the need for external dyes. Paclitaxel (PTX) is loaded via reduction-responsive disulfide bonds as a model medicine to examine the drug delivery potential of GO/PEG-Glu-Lys-Glu. The results showed that the drug loading content of PEG-Glu-Lys-Glu and GO/PEG-Glu-Lys-Glu to PTX is 7.11% and 8.97%, and the loading efficiency is 71.05% and 89.68%, respectively. It’s speculated that the π–π interaction between GO and PTX improved the drug-loading capacity and efficiency of GO/PEG-Glu-Lys-Glu. In vitro, in a simulated drug release test, at 48 h, the release of PTX was 85.51% at pH 5.0, 65.12% and 38.32% at pH 6.5 and 7.4, respectively. The cytotoxicity assay results showed that GO/PEG-Glu-Lys-Glu cell inhibition rate to MCF-7 cells was 7.36% at 72 h. The cell inhibition rate of GO/PEG-Glu-Lys-Glu/PTX system at 72 h was 92%, equivalent to free PTX. Therefore, the GO/PEG-Glu-Lys-Glu drug delivery system has the characteristics of good biocompatibility and sustainable release of PTX, which is expected to be applied in the field of tumor therapy.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Jianxin Ma,Weiwei Meng,Yuehua Li,Lei Dai,Ling Wang
The mixed conductor porous layer was prepared by introducing the electronic conductor NiO into the oxygen ion conductor YSZ for the impedimetric NO 2 sensor. By changing the ratio of YSZ/NiO in the porous layer , the morphology and electron-ion conduction properties of the mixed conductor porous layer were tuned to obtain the high-performance sensing electrode/electrolyte/gas three-phase boundary (TPB) and improve the response characteristics of the sensor. The results show that the number of pores in the porous layer decreases with increasing NiO doping, while the average pore size shows an opposite trend. The results of AC impedance and NO 2 -TPD measurement show that the introduction of NiO in the YSZ porous layer significantly improves the electrochemical activity of the sensor at TPB and the NO 2 adsorption capacity , which in turn improves the sensitivity of the sensor. The sensor based on the YSZ:NiO= 1:0.5 (mass ratio) porous layer exhibits the highest Θ (Δ Θ = 19.13° for 300 ppm) and |Z| (S |Z| = 0.35 for 300 ppm) response value. The sensor also has good anti-interference ability. The changes of Δ Θ caused by CH 4 , CO 2 , H 2 , NO and NH 3 are 0.6%, 1.6%, − 2.6%, 3.3% and − 2.4%, and the Δ|Z| are 2.5%, 3.2%, − 2.7%, 5.6% and 1.2%. Meanwhile, the humidity has almost no effect on the |Z| and Θ response.
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Carbon Letters
·
2023
·
IF 4.5
Lu Tong,Zhang Qingxia,Yang Jingjing,Xin Yue,Zhang Zhilei,Hu Lingye,Hu Jing,Qin Qin,Yang Hao
The discharge of industrial oily wastewater and oil spill accidents has resulted in significant environmental pollution, creating an urgent need for the treatment of oily wastewater. Nanofiber membranes, known for their high stability, flux, and efficiency, are widely employed in oil–water separation. This study systematically compared the performance of polyacrylonitrile/graphene oxide (PAN/GO) composite nanofiber membranes prepared through immersion and electrospinning methods for oily wastewater treatment. Experimental findings demonstrated that immersion-prepared membranes achieved high flux (772.9 ± 2.9 L·m −2 ·h −1 , n-hexane/water mixture) and efficiency (98.8%) at a GO concentration of 1.0 g/mL. On the other hand, electrospinning-prepared membranes exhibited superior flux (1500.3 ± 4.4 L·m −2 ·h −1 , n-hexane/water mixture) and efficiency (99.6%) at a higher GO concentration (1.5 g/mL). This membrane displayed excellent stability, maintaining their exceptional performance even after ten cycles of separation. This study compared the advantages and disadvantages of the two methods for preparation of PAN/GO composite nanofiber membrane, offering valuable guidance for practical applications.
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