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Advancing pressure sensors performance through a flexible MXene embedded interlocking structure in a microlens array

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Nano Research 2023年第7期16卷 10493-10499页

作者： Tong Li Zhenzong xu ben bin xu Zhanhu Guo Yunhong Jiang xuehua Zhang Maryam Bayati Terence Xiaoteng Liu Yan-Hua Liu School of Optoelectronic Science and Engineering Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province&Key Lab of Modern Optical Technologies of Education Ministry of ChinaSoochow UniversitySuzhou 215006China Department of Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon TyneNE18STUK Hub for Biotechnology in the Built Environment Department of Applied SciencesNorthumbria University at NewcastleNE18STUK Department of Chemical and Materials Engineering University of AlbertaEdmontonAlberta T6G 1H9Canada

Piezoresistive composite elastomers have shown great potentials for wearable and flexible electronic applications due to their high sensitivity,excellent frequency response,and easy signal detection.A composition membrane sensor with an interlocked structure has been developed and demonstrated outstanding pressure sensitivity,fast response time,and low temperature drift *** with a flexible MXene-based flat sensor(Ti_(3)C_(2)),the interlocked sensor exhibits a significantly improved pressure sensitivity of two magnitudes higher(21.04 kPa^(-1)),a fast reaction speed of 31 ms,and an excellent cycle life of 5000 test *** viability of sensor in responding to various external stimuli with high deformation capacity has been confirmed by calculating the force distribution of a polydimethylsiloxane(PDMS)film model with a microlens structure using the solid mechanics module in *** conventional process,we utilized three-dimensional(3D)laser-direct writing lithography equipment to directly transform high-precision 3D data into a micro-nano structure morphology through variable exposure doses,which reduces the hot melting ***,the flexible pressure device is capable of detecting and distinguishing signals ranging from finger movements to human pulses,even for speech *** simple,convenient,and large-format lithographic method offers new opportunities for developing novel human-computer interaction devices.

关键词： three-dimensional(3D)lithography microlens array flexible electronics pizoresistive pressure sensors MXene

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Reversible Magnesium Metal Anode Enabled by Cooperative Solvation/Surface Engineering in Carbonate Electrolytes

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Nano-Micro Letters 2021年第12期13卷 109-119页

作者： Caiyun Wang Yao Huang Yunhao Lu Hongge Pan ben bin xu Wenping Sun Mi Yan Yinzhu Jiang School of Materials Science and Engineering State Key Laboratory of Clean Energy UtilizationZhejiang UniversityHangzhou 310027ZhejiangPeople’s Republic of China ZJU‑Hangzhou Global Scientific and Technological Innovation Centre Zhejiang UniversityHangzhou 311200People’s Republic of China Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an 710021People’s Republic of China Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon Tyne NE18STUK

Magnesium metal anode holds great potentials toward future high energy and safe rechargeable magnesium battery technology due to its divalent redox and dendrite-free nature. Electrolytes based on Lewis acid chemistry enable the reversible Mg plating/stripping,while they fail to match most cathode materials toward highvoltage magnesium batteries. Herein,reversible Mg plating/stripping is achieved in conventional carbonate electrolytes enabled by the cooperative solvation/surface engineering. Strongly electronegative Cl from the MgCl_(2) additive of electrolyte impairs the Mg…O = C interaction to reduce the Mg^(2+) desolvation barrier for accelerated redox kinetics,while the Mg^(2+)-conducting polymer coating on the Mg surface ensures the facile Mg^(2+) migration and the e ective isolation of electrolytes. As a result,reversible plating and stripping of Mg is demonstrated with a low overpotential of 0.7 V up to 2000 cycles. Moreover,benefitting from the wide electrochemical window of carbonate electrolytes,high-voltage(> 2.0 V) rechargeable magnesium batteries are achieved through assembling the electrode couple of Mg metal anode and Prussian blue-based cathodes. The present work provides a cooperative engineering strategy to promote the application of magnesium anode in carbonate electrolytes toward high energy rechargeable batteries.

关键词： Rechargeable magnesium batteries Metal anode Solvation effect Passivation Carbonate electrolytes

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NH_(4)Cl-assisted preparation of single Ni sites anchored carbon nanosheet catalysts for highly efficient carbon dioxide electroreduction

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Journal of Materials Science & Technology 2023年第11期142卷 1-9页

作者： Dan Ping Feng Yi Guiwei Zhang Shide Wu Shaoming Fang Kailong Hu ben bin xu Junna Ren Zhanhu Guo Henan Provincial Key Laboratory of Surface&Interface Science Henan Engineering Research Center of Chemical Engineering Separation Process IntensificationSchool of Material and Chemical EngineeringZhengzhou University of Light IndustryZhengzhou 450002China School of Materials Science and Engineering Harbin Institute of TechnologyShenzhen 518055China Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon Tyne NE18STUK College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Department of Chemical&Biomolecular Engineering Integrated Composites Lab(ICL)University of TennesseeKnoxvilleTN 37996USA

Single-atomic transition metal-nitrogen codoped carbon(M-N-C)are efficient substitute catalysts for noble metals to catalyze the electrochemical CO_(2) reduction reaction(CO_(2)RR).However,the uncontrolled aggregations of metal and serious loss of nitrogen species constituting the M-N_(x) active sites are frequently observed in the commonly used pyrolysis ***,single-atomic nickel(Ni)-based sheet-like electrocatalysts with abundant Ni-N_(4) active sites were created by using a novel ammonium chloride(NH_(4)Cl)-assited pyrolysis *** aberration correction electron microscopy and X-ray absorption fine structure analysis clearly revealed that Ni species are atomically dispersed and anchored by N in Ni-N_(4) *** addition of NH_(4)Cl optimized the mesopore size to 7-10 nm and increased the concentrations of pyridinic N(3.54 wt%)and Ni-N_(4)(3.33 wt%)*** synergistic catalytic effect derived from Ni-N_(4) active sites and pyridinic N species achieved an outstanding CO_(2) RR performance,presenting a high CO Faradaic efficiency(FE_(CO))up to 98% and a large CO partial current density of 8.5 mA cm^(-2) at a low potential of-0.62 V ***,the FE_(CO) maintains above 80% within a large potential range from -0.43 to -0.73 V *** work provides a practical and feasible approach to building highly active single-atomic catalysts for CO_(2) conversion systems.

关键词： CO_(2)reduction Electrocatalyst Single-atomic ni NH_(4)Cl Pyridinic N

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An active bacterial anti-adhesion strategy based on directional transportation of bacterial droplets driven by triboelectric nanogenerators

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Nano Research 2023年第1期16卷 1052-1063页

作者： Jing Lin Jialin Li Shichang Feng Caiqin Gu Huajian Li Hanqing Lu Fei Hu Duo Pan ben bin xu Zhanhu Guo School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhou 510006China Integrated Composites Laboratory(ICL) Department of Chemical&Biomolecular EngineeringUniversity of TennesseeKnoxvilleTN 37996USA Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon TyneNE18STUK

An active bacterial anti-adhesion strategy based on directional transportation of bacterial droplets driven by a triboelectric nanogenerator(TENG)has not been reported to date,although passive defense approaches can prevent bacterial adhesion by regulating superwetting surfaces combined with incorporated antibacterial *** a triboelectric nanogenerator driving droplet system(TNDDS)was built to drive directional transportation of bacterial droplets to be eliminated,which comprises TENG with periodical frictional Kapton film and aluminum foils and a superhydrophobic driving platform(SDP)with paralleled driving *** current generated by the TENG triboelectricity is transmitted to the paralleled driving electrodes to form an electric field driving the directional transportation of charged *** critical value of the driven droplet volume on SDP is closely related to the distributed electrodes’distance and width,and the driving distance of droplets is related to the number of *** crucially,TNDDS can actively drive the charged droplets of prepared triangular silver nanoprisms(Ag NPs)forward and back to mix with and remove a tiny bacterial droplet on an open SDP or in a tiny semi-enclosed *** could be killed by releasing Ag+and effectively removed by TNDDS by regulating the motion ***,this approach offers a promising application for removing bacteria from material surfaces driven by TENG and opens a new avenue for bacterial anti-adhesion.

关键词： bacterial anti-adhesion antibacterial directional transportation triboelectric nanogenerator superhydrophobic

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“Several birds with one stone”strategy of pH/thermoresponsive flame-retardant/photothermal bactericidal oil-absorbing material for recovering complex spilled oil

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Journal of Materials Science & Technology 2022年第33期128卷 82-97页

作者： Ya Chen Jing Lin Gaber A.M.Mersal Jianliang Zuo Jialin Li Qiying Wang Yuhong Feng Jianwei Liu Zili Liu bin Wang ben bin xu Zhanhu Guo School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhou 510006China Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099 Taif 21944Saudi Arabia College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Department of Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon TyneNE18STUK Integrated Composites Laboratory(ICL) Department of Chemical&Biomolecular EngineeringUniversity of TennesseeKnoxvilleTN 37996USA

Although many material designs or strategic methods have been proposed for treating oil spills and oily wastewater,the complex oily state,dealing with the harsh operating conditions of oil–water separation(such as the recovery of viscous spilled crude oil,bacteria-containing oily wastewater,and removal of spilled oil under fire),and the autorecycling of oil and absorption materials remain a great *** work proposed an ingenious design strategy of“several birds with one stone”to prepare p H/thermoresponsive flame-retardant/photothermal bactericidal P-Fe_(3)O_(4)-polydopamine(PDA)@melamine–formaldehyde(MF)*** design makes the foams remarkably effective in the recovery of spilled viscous crude oil as well as in the separation of bacteria-containing oily emulsions,particularly for instant fire extinguishing by magnetically controlled oil absorption as well as for fire *** photothermal effect and p H response induce a change in the surface wettability of the foams,facilitating excellent autoadsorption/desorption of the spilled *** photothermal bactericidal activity and fouling resistance of the foam are beneficial to the separation of bacteria-containing oily *** flame-retardant properties and maneuverable magnetic control enable the foam to rapidly recover the spilled oil in a large range of fires,extinguish fires instantly,and facilitate early fire *** proposed strategy is expected to inspire further research on treating oil spills under complex conditions.

关键词： Oil-absorbing material pH-responsive Thermoresponsive Photothermal Bactericidal Fire warning

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Biosafety of a 3D-printed intraocular lens made of a poly (acrylamide-co-sodium acrylate) hydrogel in vitro and in vivo

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International Journal of Ophthalmology(English edition) 2020年第10期13卷 1521-1530页

作者： Jia-Wen Li Yi-Jian Li Xi-Su Hu Yu Gong ben-bin xu Hai-Wei xu Zheng-Qin Yin Southwest Hospital/Southwest Eye Hospital Third Military Medical University(Army Medical University)Chongqing 400038China Key Lab of Visual Damage and Regeneration&Restoration of Chongqing Chongqing 400038China Smart Materials and Surfaces Lab Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon Tyne NE18STUK

AIM:To assess the biosafety of a poly(acrylamide-cosodium acrylate)hydrogel(PAH)as a 3D-printed intraocular lens(IOL)***:The biosafety of PAH was first evaluated in vitro using human lens epithelial cells(LECs)and the ARPE19 cell line,and a cell counting kit-8(CCK-8)assay was performed to investigate alterations in cell proliferation.A thin film of PAH and a conventional IOL were intraocularly implanted into the eyes of New Zealand white rabbits respectively,and a sham surgery served as control *** anterior segment photographs,intraocular pressure(IOP),blood parameters and electroretinograms(ERG)were *** cytokines in the aqueous humor,such as TNFαand IL-8,were examined by *** apoptosis of the retina was investigated by TUNEL assay,and macro PAHge activation was detected by ***:PAH did not slow cell proliferation when cocultured with human LECs or ARPE19 *** implantation of a thin film of a 3 D-printed IOL composed of PAH did not affect the IOP,blood parameters,ERG or optical structure in any of the three experimental groups(n=3 for each).Both TNFαand IL-8 in the aqueous humor of PAH group were transiently elevated 1 wk post-operation and recovered to normal levels at 1 and 3 mo ***1+macroPAHges in the anterior chamber angle in PAH group were increased markedly compared to those of the control group;however,there was no significant difference compared to those in the IOL ***:PAH is a safe material for 3D printing of personal IOLs that hold great potential for future clinical applications.

关键词： cataract biosafety lens epithelial cells ARPE19 cells intraocular lens 3D printing poly hydrogel rabbit

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Boosted lithium storage performance by local build-in electric field derived by oxygen vacancies in 3D holey N-doped carbon structure decorated with molybdenum dioxide

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Journal of Materials Science & Technology 2023年第11期142卷 185-195页

作者： Chuanxin Hou Wenyue Yang Hideo Kimura Xiubo Xie Xiaoyu Zhang xueqin Sun Zhipeng Yu Xiaoyang Yang Yuping Zhang bin Wang ben bin xu Deepak Sridhar Hassan Algadi Zhanhu Guo Wei Du School of Environmental and Material Engineering Yantai UniversityYantai 264005China Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai 264005China Department of Chemical&Biomolecular Engineering University of TennesseeKnoxvilleTN 37996USA College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle Upon Tyne NE18STUK Zentek Ltd. 24 Corporate CourtGuelphON N1G 5G5Canada Department of Electrical Engineering Faculty of EngineeringNajran UniversityNajran 11001Saudi Arabia Integrated Composites Laboratory(ICL) Mechanical and Construction EngineeringFaculty of Engineering and EnvironmentNorthumbria UniversityNewcastle Upon TyneNE18STUK

Three-dimensional holey nitrogen-doped carbon matrixes decorated with molybdenum dioxide(MoO_(2))nanoparticles have been successfully synthesized via a NaCl-assisted template *** obtained MoO_(2)/C composites offered multi-advantages,including higher specific surface area,more active sites,more ions/electrons transmission channels,and shorter transmission path due to the synergistic effect of the uniformly distributed MoO_(2) nanoparticles and porous carbon ***,the oxygen vacancies were introduced into the prepared composites and enhanced the Li^(+)intercalation/deintercalation process during electrochemical cycling by the Coulomb *** existence of the local built-in electric field was proved by experimental data,differential charge density distribution,and density of states *** uniquely designed structure and introduced oxygen vacancy defects endowed the MoO_(2)/C composites with excellent electrochemical *** view of the synergistic effect of the uniquely designed morphology and introduced oxygen vacancy defects,the MoO_(2)/C composites exhibited superior electrochemical performance of a high capacity of 918.2 mAh g^(-1) at 0.1 A g^(-1) after 130 cycles,562.1 mAh g^(-1) at 1.0 A g^(-1) after 1000 cycles,and a capacity of 181.25 mAh g^(-1) even at 20.0 A g^(-1).This strategy highlights the path to promote the commercial application of MoO_(2)-based and other transition metal oxide electrodes for energy storage devices.

关键词： MoO_(2)/C hybrid 3D holey structure Oxygen vacancies Lithium-ion batteries

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An efficient bifunctional Ni-Nb_(2)O_(5)nanocatalysts for the hydrodeoxygenation of anisole

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Chinese Journal of Chemical Engineering 2022年第9期35卷 187-197页

作者： Juan xu Ping Zhu Islam HEl Azab ben bin xu Zhanhu Guo Ashraf YElnaggar Gaber AMMersal Xiangyi Liu Yunfei Zhi Zhiping Lin Hassan Algadi Shaoyun Shan Faculty of Chemical Engineering Kunming University of Science and TechnologyKunming 650500China College of Chemical Engineering Southwest Forestry UniversityKunming 650224China Yunnan Province Special Equipment Safety Inspection and Research Institute Kunming 650228China Department of Food Science and Nutrition College of ScienceTaif UniversityTaif 21944Saudi Arabia Department of Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon Tyne NE18STUK Integrated Composites Lab(ICL) Department of Chemical&Biomolecular EngineeringUniversity of TennesseeKnoxvilleTN 37996USA Department of Chemistry College of ScienceTaif UniversityTaif 21944Saudi Arabia Taizhou University Taizhou 31800China Department of Electrical Engineering Faculty of EngineeringNajran UniversityNajran 11001Saudi Arabia

The Ni-Nb_(2)O_(5)nanocatalysts have been prepared by the solgel method,and the catalytic hydrodeoxygenation(HDO)performance of anisole as model compound is *** results show that Nb exists as amorphous Nb_(2)O_(5)species,which can promote Ni *** addition of Nb_(2)O_(5)increases the acidity of the ***,when the content of niobium is high,there is an inactive Nb-Ni-O mixed *** size and morphology of Ni grains in catalysts are different due to the difference of Nb/Ni molar *** Ni_(0.9)Nb_(0.1)sample has the largest surface area of 170.8 m^(2)·g^(-1)among the catalysts prepared in different Nb/Ni molar ratios,which is mainly composed of spherical nanoparticles and crack *** HDO of anisole follows the reaction route of the hydrogenation HYD *** Ni_(0.9)Nb_(0.1)catalyst displayed a higher HDO performance for anisole than Ni *** selectivity to cyclohexane over the Ni_(0.9)Nb_(0.1)sample is about 10 times that of Ni catalyst at 220℃and 3 MPa H_(2).The selectivity of cyclohexane is increased with the increase of reaction *** anisole is almost completely transformed into cyclohexane at 240℃,3 MPa H_(2)and 4 h.

关键词： Hydrodeoxygenation(HDO) Catalysts Ni-Nb_(2)O_(5) Solgel method Anisole

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High-performance flexible all-solid-state asymmetric supercapacitors based on binder-free MXene/cellulose nanofiber anode and carbon cloth/polyaniline cathode

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Nano Research 2023年第5期16卷 7696-7709页

作者： Xiaoyu Bi Meichun Li Guoqiang Zhou Chaozheng Liu Runzhou Huang Yang Shi ben bin xu Zhanhu Guo Wei Fan Hassan Algadi Shengbo Ge Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China School of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580China Integrated Composites Lab Department of Mechanical and Construction EngineeringNorthumbria UniversityNewcastle Upon TyneNE18STUK School of Textile Science and Engineering&Key Laboratory of Functional Textile Material and Product of Ministry of Education Xi'an Polytechnic UniversityXi'an 710048China College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024China Department of Electrical Engineering Faculty of EngineeringNajran UniversityNajran11001Saudi Arabia

The search for wearable electronics has been attracted great efforts,there is an ever-growing demand for all-solid-state flexible energy storage ***,it is a challenge to obtain both positive and negative electrodes with excellent mechanical strength and match positive and negative charges to achieve high energy densities and operate voltages to satisfy practical application ***,flexible MXene(Ti_(3)C_(2)Tx)/cellulose nanofiber(CNF)composite film negative electrodes(MCNF)were fabricated with a vacuum filtration method,as well as positive electrodes(CP)by combining polyaniline(PANI)with carbon cloth(CC)using an in-situ polymerization *** positive and negative free-standing electrodes exhibited excellent electrochemical behavior and bendable/foldable *** a result,the all-pseudocapacitance asymmetric device of MCNF//CP assembled with charge-matched between anode and cathode achieves an extended voltage window of 1.5 V,high energy density of 30.6 Wh·kg^(−1)(1211 W·kg^(−1)),86%capacitance retention after 5000 cycles,the device maintains excellent bendability,*** work will pave the way for the development of all-pseudocapacitive asymmetric supercapacitors(ASC)with simultaneously preeminent mechanical properties,high energy density,wide operating voltage window.

关键词： MXene cellulose nanofiber polyaniline asymmetric supercapacitors

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MXene Enhanced 3D Needled Waste Denim Felt for High‑Performance Flexible Supercapacitors

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Nano-Micro Letters 2024年第2期16卷 383-394页

作者： Wei Fan Qi Wang Kai Rong Yang Shi Wanxi Peng Handong Li Zhanhu Guo ben bin xu Hua Hou Hassan Algadi Shengbo Ge Key Laboratory of Functional Textile Material and Product of the Ministry of Education School of Textile Science and EngineeringInstitute of Flexible electronics and Intelligent TextileXi’an Polytechnic UniversityXi’an 710048People’s Republic of China Co‑Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037People’s Republic of China Henan Province International Collaboration Lab of Forest Resources Utilization School of ForestryHenan Agricultural UniversityZhengzhou 450002People’s Republic of China Integrated Composites Lab Department of Mechanical and Construction EngineeringNorthumbria UniversityNewcastle Upon Tyne NE18STUK College of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024People’s Republic of China Department of Electrical Engineering Faculty of EngineeringNajran University11001 NajranSaudi Arabia

MXene,a transition metal carbide/nitride,has been prominent as an ideal electrochemical active material for ***,the low MXene load limits its practical *** environmental concerns and sustainable development become more widely recognized,it is necessary to explore a greener and cleaner technology to recycle textile by-products such as *** present study proposes an effective 3D fabrication method that uses MXene to fabricate waste denim felt into ultralight and flexible supercapacitors through needling and *** 3D structure provided more sites for loading MXene onto Z-directional fiber bundles,resulting in more efficient ion exchange between the electrolyte and ***,the carbonization process removed the specific adverse groups in MXenes,further improving the specific capacitance,energy density,power density and electrical conductivity of *** electrodes achieve a maximum specific capacitance of 1748.5 mF cm-2 and demonstrate remarkable cycling stability maintaining more than 94%after 15,000 galvanostatic charge/discharge ***,the obtained supercapacitors present a maximum specific capacitance of 577.5 mF cm^(-2),energy density of 80.2μWh cm^(-2)and power density of 3 mW cm^(-2),*** resulting supercapacitors can be used to develop smart wearable power devices such as smartwatches,laying the foundation for a novel strategy of utilizing waste cotton in a high-quality manner.

关键词： MXene 3D needled waste denim felt Supercapacitors Carbonization

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