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MOF-Like 3d graphene-Based Catalytic Membrane Fabricated by One-Step Laser Scribing for Robust Water Purification and Green Energy Production

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Nano-Micro Letters 2022年第11期14卷 48-61页

作者： Xinyu Huang Liheng Li Shuaifei Zhao Lei Tong Zheng Li Zhuiri Peng Runfeng Lin Li Zhou Chang Peng Kan-Hao Xue Lijuan Chen Gary J.Cheng Zhu Xiong Lei Ye School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China Hubei Yangtze Memory Laboratories Wuhan 430205People’s Republic of China Institute for Frontier Materials Deakin UniversityGeelongVIC 3216Australia Key Laboratory of New Processing Technology for Nonferrous Metal and Materials(Ministry of Education) Guangxi Key Laboratory of Optical and Electronic Materials and DevicesCollege of Materials Science and EngineeringGuilin University of TechnologyGuilin 541004People’s Republic of China College of Chemistry and Materials Science Hunan Agricultural UniversityHunan 410128People’s Republic of China School of Material Science and Engineering Hunan University of Science and TechnologyXiangtanHunan ProvincePeople’s Republic of China School of Industrial Engineering and Birck Nanotechnology Centre Purdue UniversityWest LafayetteIN 47907USA Institute of Environmental Research at Greater Bay Key Laboratory for Water Quality and Conservation of the Pearl River DeltaMinistry of EducationGuangzhou UniversityGuangzhou 510006GuangdongPeople’s Republic of China

Increasing both clean water and green energy demands for survival and development are the grand challenges of our ***,we successfully fabricate a novel multifunctional 3d graphene-based catalytic membrane(3d-GCM)with active metal nanoparticles(AMNs)loading for simultaneously obtaining the water purification and clean energy generation,via a“green”one-step laser scribing *** as-prepared 3d-GCM shows high porosity and uniform distribution with AMNs,which exhibits high permeated fluxes(over 100 L m^(−2) h^(−1))and versatile super-adsorption capacities for the removal of tricky organic pollutants from wastewater under ultra-low pressure-driving(0.1 bar).After adsorption saturating,the AMNs in 3d-GCM actuates the advanced oxidization process to self-clean the fouled membrane via the catalysis,and restores the adsorption capacity well for the next time membrane *** importantly,the 3d-GCM with the welding of laser scribing overcomes the lateral shear force damaging during the long-term ***,the 3d-GCM could emit plentiful of hot electrons from AMNs under light irradiation,realizing the membrane catalytic hydrolysis reactions for hydrogen energy ***“green”precision manufacturing with laser scribing technology provides a feasible technology to fabricate high-efficient and robust 3d-GCM microreactor in the tricky wastewater purification and sustainable clean energy production as well.

关键词： 3d graphene Laser scribing Catalytic membrane Water purification Hydrogen production

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Revealing the Role of defect in 3d graphene-Based Photocatalytic Composite for Efficient Elimination of Antibiotic and Heavy Metal Combined Pollution

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Energy & Environmental Materials 2024年第3期7卷 164-174页

作者： Xin Wang Jingzhe Zhang Hui Wang Mengjun Liang Qiang Wang Fuming Chen Research Institute of Frontier Science Southwest Jiaotong UniversityChengdu 610031China Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials School of Electronics and Information EngineeringSouth China Normal UniversityFoshan 528225China School of Aeronautics Northwestern Polytechnical UniversityXi'an 710072China Hubei Key Laboratory for High-Efficiency Utilization of Solar Energy and Operation Control of Energy Storage System Hubei University of TechnologyWuhan 430068China MOE Key Laboratory of Thermo-Fluid Science and Engineering School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049China

defect engineering can give birth to novel properties for adsorption and photocatalysis in the control of antibiotics and heavy metal combined pollution with photocatalytic ***,the role of defects and the process mechanism are complicated and ***,TiO_(2)/CN/3dC was fabricated and defects were introduced into the tripartite structure with separate O_(2)plasma treatment for the single *** find that defect engineering can improve the photocatalytic activity,attributing to the increase of the contribution from h^(+)and *** contrast to TiO_(2)/CN/3dC with a photocatalytic tetracycline removal rate of 75.2%,the removal rate of TC with d-TiO_(2)/CN/3dC has increased to 88.5%.Moreover,the reactive sites of tetracycline can be increased by adsorbing on the defective *** defect construction on TiO_(2)shows the advantages in tetracycline degradation and Cu^(2+)adsorption,but also suffers significant inhibition for the tetracycline degradation in a tetracycline/Cu^(2+)combined *** contrast,the defect construction on graphene can achieve the cooperative removal of tetracycline and Cu^(2+).These findings can provide new insights into water treatment strategies with defect engineering.

关键词： 3d graphene Cu defect photocatalytic composite tetracycline

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Caterpillar-like 3d graphene nanoscrolls@CNTs hybrids decorated with Co-doped MoSe_(2)nanosheets for electrocatalytic hydrogen evolution

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Journal of Materials Science & Technology 2023年第5期136卷 43-53页

作者： Hao Luo Hongfei Gao Xudong Zhang Fan Yang Chen Liu Kewei Xu dagang Guo State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Center for High Performance Computing Network Information CenterXi’an Jiaotong UniversityXi’an 710049China

Hydrogen is a clean and flexible energy carrier that has the promising to satisfy urgent demands of the energy crisis and environmental *** hydrogen evolution reaction(HER),a critical half-reaction in water splitting,is one of the greenest and most common methods to obtain high-purity *** preeminent activity and stability electrocatalysts for hydrogen precipitation reac-tion(HER)to reduce energy consumption is of great essential.3d carbon-based materials have attracted widespread concern as the potential scaffolds of highly active and durable electrocatalysts for *** boost the HER activity and prolong the lifespan of electrocatalysts,multifarious 3d carbon architectures make an appearance to be engineered for accelerating electronic/mass transfer and maximizing the expo-sure of active ***,we designed and fabricated high-performance electrocatalysts based on a spe-cial caterpillar-like 3d graphene nanoscrolls@CNTs(GNS@CNTs)scaffold decorated with Co-doped MoSe_(2)nanosheets for *** the caterpillar-like hierarchical structure,CNTs were seamlessly co-bonded and dilated the interlayer and outer spacing of GNS through CVd growth technology,and nickel nanoparticles were covered by the CNTs *** advantage of the plentiful hierarchical pore,larger specific surface area,and higher chemical stability of the caterpillar-like structure,the catalysts exhibited enhanced elec-trocatalytic properties than some existing data *** functional theory calculations showed that the encapsulated nickel nanoparticle could tune the electronic structure of the outer anchored Co-doped MoSe_(2)and optimize itsG of H∗adsorption by electron traversing effect and doping *** indicate that caterpillar-like GNS@CNT is an ideal scaffold f or anchoring actives substance and is suit-able for high-efficient *** study provides new insights for designing hierarchical carbon composite nanostructures for catalysts,sensors,

关键词： Electron traversing effect 3d graphene graphene nanoscrolls CNT MoSe_(2),Hydrogen evolution reaction

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Porous monoliths of 3d graphene for electric double-layer supercapacitors

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Carbon Energy 2021年第2期3卷 193-224页

作者： Jinjue Zeng Chenyang Xu Tian Gao Xiangfen Jiang Xue‐Bin Wang National Laboratory of Solid State Microstructures(NLSSM) Jiangsu Key Laboratory of Artificial Functional MaterialsCollaborative Innovation Center of Advanced MicrostructuresCollege of Engineering and Applied SciencesNanjing UniversityNanjingChina WPI Center for Materials Nanoarchitectonics National Institute for Materials Science(NIMS)TsukubaJapan

For delivering the nanoscaled extraordinary characteristics in macroscopical bulk,it is essential to integrate two-dimensional nanosheets into threedimensional(3d)porous monoliths,alternatively called as 3d architectures,3d networks,or *** intersupported structure of porous monolithic 3d graphene(3dG)can prevent aggregation or restacking of graphene individuals,and the interconnected sp^(2) network of 3dG not only can provide the highway for the transport of electron/phonon but also can present continual cavities/channels for mass *** review summarizes the synthesis methodology of 3dG porous monoliths and highlights the application for electric double-layer *** challenges and future prospects about the manufacture and application of 3dG are also discussed.

关键词： 3d graphene electric double-layer capacitor graphene aerogel porous monolith supercapacitor

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Adsorption properties of a novel 3d graphene/MgO composite for heavy metal ions

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Journal of Central South University 2019年第4期26卷 813-823页

作者： ZHOU Ying LIANG Chun-yan YU Jin-gang JIANG Xin-yu School of Chemistry and Chemical Engineering Central South University Key Laboratory of Hunan Province for Water Environment and Agriculture Product Safety Central South University

A novel three-dimension(3d)graphene/MgO composite was synthesized through self-assembly and embedding MgO nanoparticle in reduced graphene in *** transform infrared(FT-IR)spectroscopy,thermal gravimetric analysis(TGA),scanning electron microscopy(SEM),transmission electron microscope(TEM),powder X-raydiffraction(XRd)and X-rayphotoelectron spectroscopy(XPS)were employed to characterize the prepared 3d graphene/MgO *** adsorption performance of some metal ions on 3d graphene/MgO was *** results showed that the adsorption capacity was greater than 3d graphene and the maximum adsorption capacity at 25℃was found to be 358.96 mg/g,388.4 mg/g and 169.8 mg/g for Pb^2+,Cd^2+and Cu^2+,*** adsorption kinetic conformed to the pseudo-second-order kinetic model and the adsorption isotherm was well described by Langmuir *** thermodynamic constants revealed that the sorption process was endothermic and spontaneous in *** on the results of the removal of heavy metal ions from metal smelting wastewater,it can be concluded that the prepared 3d graphene/MgO composite is an effective and potential adsorbent.

关键词： adsorption heavy metal ion 3d graphene MgO

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direct fabrication of 3d graphene–multi walled carbon nanotubes network and its application for sensitive electrochemical determination of hyperin

Direct fabrication of 3D graphene–multi walled carbon nanot...

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河南省化学会2018年学术年会

作者： Lijie Wang Wenke Jia Yaxin ding Fei Wang Lu Kui School of Material and Chemistry Engineering Henan University of Engineering College of Chemistry and Molecular Engineering Zhengzhou University School of Chemical Engineering and Food Science Zhengzhou Institute of Technology

In this work, a novel electrochemical sensor was proposed for hyperin determination. Pulse potential method(PPM) was presented to fabricate directly three dimensional graphene-multiwalled nanotubes(3 dG-MWCNTs) network on the surface of glassy carbon electrode(GCE) in graphite oxide-multi walled carbon nanotubes(GO-MWCNTs) dispersion. 3 dG-MWCNTs and GO-MWCNTs were characterized and morphology by scanning electron microscopy(SEM), Raman spectra and electrochemical experiments. The 3 dG-MWCNTs was successfully applied in hyperin determination with satisfactory results. Systematic electrochemical tests confirmed the 3 dG-MWCNTs network modified electrode can effectively increase response to the oxidation of hyperin. Under the optimized conditions, the modified electrode showed a linear voltammetric response to hyperin at concentrations ranging from 5.0×10-9 ～ 1.5×10-6 mol L-1 with a low detection limit of 1.0 × 10-9 mol L-1. Moreover, the proposed method showed good performance in stability, sensitivity, selectivity and reproducibility for the determination of hyperin.

关键词： 3d graphene voltammetric sensor ulse potentiostatic method hyperin

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direct electron transfer of hemoglobin at 3d graphene–nitrogen doped carbon nanotubes network modified electrode and electrocatalysis toward nitromethane

Direct electron transfer of hemoglobin at 3D graphene–nitro...

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河南省化学会2018年学术年会

作者： Yanju Wu Fei Wang Lijie Wang Kui Lu School of Material and Chemistry Engineering Henan University of Engineering College of Chemistry and Molecular Engineering Zhengzhou University School of Chemical Engineering and Food Science Zhengzhou Institute of Technology

In this work,pulsed potentiostatic reduction method was presented to directly construct a three dimensional graphene-nitrogen doped carbon nanotubes(3dG-NCNTs)network on the surface of a glassy carbon electrode(GCE).Scanning electron microscopy(SEM),Raman spectra and electrochemical experiments revealed the characteristics of the 3dG-NCNTs ***,such 3dG-NCNTs network was employed to immobilize a model molecule,hemoglobin(Hb),for the construction of an electrochemical nitromethane(CHNO)*** electrochemical properties of the biosensor were studied in detail,including the direct electron transfer of Hb and the electrochemical determination of *** to the 3dG-NCNTs network,electrochemical biosensor demonstrated fast electron transfer rate(7.12 s)and excellent catalytic activity towards *** optimal conditions,the proposed biosensor exhibited a wide linear response in the range of 5.0×10～3.5×10 mol L,with a low detection limit of 1.5×10 mol *** addition,the biosensor had high reproducibility,stability and selectivity,which provided the possibility for the monitoring of CHNO in real samples.

关键词： direct electron transfer 3d graphene graphene-nitrogen doped carbon nanotubes hemoglobin

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Pulse-electropolymerization of polyaniline in 3d graphene hydrogel for high-performance supercapacitor

Pulse-electropolymerization of polyaniline in 3D graphene hy...

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河南省化学会2016年学术年会

作者： Shuya Gao Pei dong Jian Liu Li Zhang Shaokui Cao School of Materials Science and Engineering Zhengzhou University

Three dimensional(3d) graphene monoliths with a porous network have received increasing attention for the electrochemical energy storage, mainly due to their high specific surface areas, ordered macroporous structures, strong mechanical strengths and fast mass and electron transport *** structural characteristics also enable 3d graphene a promising platform to incorporate with electroactive materials to further improve its capacitive performance as a supercapacitor electrode material. On the other hand, polyaniline(PANI) can be considered as a promising pesudocapacitive material which has an instrinsic nanofiber structure, the unique mechanism of proton doping, rich redox states and low cost. Therefore, we attempted to evenly deposit PANI on the framework of 3d graphene by pulse-electropolymerization technique, aimed to increase the energy density of the free-standing composite-based supercapacitor without deteriorating its power density. Through changing the potential-pulse cycle numbers, the GH/PANI composites with different PANI nanofiber content were prepared. The resulting GH/PANI composites were then characterized by SEM, FTIR and Raman analysis. The elelctrochemical properties of the samples were studied in three-electrode system using cyclic voltammograms(CV), galvanostatic charge-discharge and electrochemical impedance spectroscopy(EIS) techniques. The results showed that the capacitive performance of GH/PANI is significantly improved due to the reinforcing effects coming from PANI. The best specific capacitance of 734 F/g can be achieved at the charge and discharge rate of 1.7A/g for the optimized GH/PANI sample with 300 pulse cycles. This composite sample also exhibited excellent rate capability up to 100A/g with a capacitance retention of 72%, and good cycling stability with 83% capacitance retention after 1000 cycles.

关键词： Supercapacitor 3d graphene Polyaniline nanofiber Pulse-electropolymerization

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Spatial construction of ultrasmall Pt-decorated 3d spinel oxidemodified N-doped graphene nanoarchitectures as high-efficiency methanol oxidation electrocatalysts

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Rare Metals 2024年第1期43卷 186-197页

作者： Qi Zhang Min-Min Yan Wen-Fa du Chen-Yu Yin Jian Zhang Lu Yang Yun-Qing Kang Hai-Yan He Hua-Jie Huang College of Mechanics and Materials Hohai UniversityNanjing 210098China New Energy Technology Engineering Lab of Jiangsu Province College of ScienceNanjing University of Posts&Telecommunications(NUPT)Nanjing 210023China International Center for Materials Nanoarchitectonics(WPIMANA) National Institute for Materials ScienceTsukuba 305-0044IbarakiJapan

direct methanol fuel cell technology recently becomes the focus of both academic and engineering circles,which stimulates the exploitation and utilization of advanced electrode catalysts with high activity and long ***,we demonstrate a robust bottom-up approach to the spatial construction of three-dimensional(3d) spinel manganese-cobalt oxide-modified N-doped graphene nanoarchitectures decorated with ultrasmall Pt nanoparticles(Pt/MnCo_(2)O_(4)-NG) via a controllable selfassembly *** incorporation of MnCo_(2)O_(4)nanocrystals provides abundant hydroxyl sources to promote the oxidative removal of CO-like byproducts on Pt sites,while the existence of 3d porous N-doped graphene networks facilitates the transportation of both ions and electrons in the hybrid system,thus giving rise to remarkable synergetic coupling effects during the methanol oxidation ***,the optimized Pt/MnCo_(2)O_(4)-NG nano architecture expres ses exceptional electrocatalytic properties with a large electrochemically active surface area of 99.5 m^(2)·g^(-1),a high mass activity of1508.3 mA·mg^(-1),strong toxicity resistance and reliable long-term durability,which have obvious competitive advantages over those of conventional Pt/carbon black,Pt/carbon nano tube,Pt/graphene,and Pt/N-doped graphene catalysts with the same Pt usage.

关键词： Platinum MnCo_(2)O_(4) 3d graphene Electrocatalysts Methanol oxidation

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Scaling laws governing the elastic properties of 3d graphenes

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Science China(Technological Sciences) 2024年第6期67卷 1748-1756页

作者： LI Ming LU Guo YU Haodong LI MengLei ZHENG FaWei Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE)School of PhysicsBeijing Institute of TechnologyBeijing100081China Beijing Key Lab of Nanophotonics&Ultrafine Optoelectronic Systems School of PhysicsBeijing Institute of TechnologyBeijing100081China Laboratory of Computational Physics Institute of Applied Physics and Computational MathematicsBeijing100088China department of Physics Capital Normal UniversityBeijing100048China

In this study,we comprehensively investigated the scaling law for elastic properties of three-dimensional honeycomb-like graphenes(3d graphenes)using hybrid neural network potential-based molecular dynamics simulations and theoretical *** elastic constants were obtained as functions of honeycomb hole size,denoted by the graphene wall length *** five independent elastic constants in the large-L limit are proportional to L^(-1).The associated coefficients are combinations of elastic constants of two-dimensional ***-order terms including L^(-2)and L^(-3)emerge for finite L *** have three origins,the distorted areas close to the joint lines of 3d graphenes,the variation in solid angles between graphene plates,and the bending distortion of graphene ***,the chirality becomes essential with decreasing L because the joint line structures are different between the armchair and zigzag-type 3d *** findings provide insights into the elastic properties of graphene-based superstructures and can be used for further studies on graphene-based materials.

关键词： scaling law neural network elastic properties 3d graphene

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