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Nitrogen Configuration Effects on Charge Carrier dynamics in CsPbBr3/Carbon dots S-Scheme Heterojunction for Photocatalytic CO2 reduction

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Journal of Physical Chemistry Letters 2024年第21期15卷 5728-5737页

作者： Tsai, Kai-An Chang, Yao-Jen Li, Yu-Chieh Zheng, Meng-Wei Chang, Jui-Cheng Liu, Shou-Heng Tseng, Shih-Wen Li, Yan Pu, Ying-Chih Department of Materials Science National University of Tainan Tainan70005 Taiwan Department of Environmental Engineering National Cheng Kung University Tainan70101 Taiwan Department of Chemical Engineering and R&D Center for Membrane Technology Chung Yuan Christian University Taoyuan320314 Taiwan Core Facility Center of National Cheng Kung University Tainan70101 Taiwan School of Materials Science and Engineering University of Science and Technology Beijing Beijing100083 China

Nitrogen-doped carbon dots (NCds) featuring primary pyrrolic N and pyridinic N dominated configurations were prepared using hydrothermal (H-NCds) and microwave (M-NCds) methods, respectively. These H-NCds and M-NCds were subsequently applied to decorate CsPbBr3 nanocrystals (CPB NCs) individually, using a ligand-assisted reprecipitation process. Both CPB/M-NCds and CPB/H-NCds nanoheterostructures (NHSs) exhibited S-scheme charge transfer behavior, which enhanced their performance in photocatalytic CO2 reduction and selectivity of CO2-to-CH4 conversion, compared to pristine CPB NCs. The presence of pyrrolic N configuration at the heterojunction of CPB/H-NCds facilitated efficient S-scheme charge transfer, leading to a remarkable 43-fold increase in photoactivity. In contrast, CPB/M-NCds showed only a modest 3-fold enhancement in photoactivity, which was attributed to electron trapping by pyridinic N at the heterojunction. The study offers crucial insights into charge carrier dynamics within perovskite/carbon NHSs at the molecular level to advance the understanding of solar fuel generation. © 2024 American Chemical Society.

关键词： Heterojunctions

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recent developments of anti-plasticized membranes for aggressive CO_(2)separation

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Green Chemical engineering 2023年第1期4卷 1-16页

作者： Yongchao Sun Xiaoyu Wang Xiangcun Li Wu Xiao Yan dai Canghai Ma Gaohong He State Key Laboratory of Fine Chemicals R&D Center of Membrane Science and TechnologySchool of Chemical EngineeringDalian University of TechnologyDalian116023China Panjin Institute of Industrial Technology Liaoning Key Laboratory of Chemical Additive Synthesis and SeparationDalian University of TechnologyPanjin124221China

membrane separation technology provides an effective alternative to mitigate the massive carbon emission with high carbon capture productivity and *** the context of operating membranes under high CO_(2)pressures allows increased separation productivity and reduced gas compression cost,which,however,often leads to CO_(2)induced plasticization,a key hurdle for current gas separation *** this review,we reviewed the latest development of membranes with anti-plasticization resistance,potentially suited for operation under high CO_(2)feed ***,the separation performance of polymeric membranes,inorganic membranes,and mixed matrix membranes under high CO_(2)feed pressures are *** to enhance CO_(2)induced plasticization of those membranes are also *** conclude the recent progress of membranes for high CO_(2)pressures with perspectives and an outlook for future development.

关键词： Carbon dioxide High feed pressure Plasticization Polymeric membranes Inorganic membranes Mixed matrix membranes

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Tailored engineering on the Interface Between Lithium Metal Anode and Solid-State Electrolytes

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Energy & Environmental Materials 2025年第1期8卷 1-32页

作者： Qi Zhou Xiaosong Xiong Jun Peng Wenzhuo Wu Weijia Fan Haoyuan Yang Tao Wang Yuan Ma Faxing Wang Yuping Wu Confucius Energy Storage Lab School of Energy and Environment&Z Energy Storage CenterSoutheast UniversityNanjing 211189China School of Energy Science and Engineering Nanjing Tech UniversityNanjing 211816China R&D Center DKJ New Energy Tech Co.LtdShaoxing 312365China

The replacement of non-aqueous organic electrolytes with solid-state electrolytes(SSEs)in solid-state lithium metal batteries(SLMBs)is considered a promising strategy to address the constraints of lithium-ion batteries,especially in terms of energy density and ***,few SLMBs can deliver the required cycling performance and long-term stability for practical use,primarily due to suboptimal interface *** the diverse solidification pathways leading to different interface characteristics,it is crucial to pinpoint the source of interface deterioration and develop appropriate *** review focuses on Li|SSE interface issues between lithium metal anode and SSE,discussing recent advancements in the understanding of(electro)chemistry,the impact of defects,and interface evolutions that vary among different SSE *** state-ofthe-art strategies concerning modified SEI,artificial interlayer,surface architecture,and composite structure are summarized and delved into the internal relationships between interface characteristics and performance *** current challenges and opportunities in characterizing and modifying the Li|SSE interface are suggested as potential directions for achieving practical SLMBs.

关键词： anode instability lithium metal anode solid-state batteries solid-state electrolyte

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Jade Powder: Characterization, Cytocompatibility, and Bactericidal Effect

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Journal of Testing and Evaluation 2023年第5期51卷

作者： Chen, Lunqian Han, Chong du, Bangyao He, Gaohong Zhang, Xiujuan State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology Panjin Campus 2 Dagong Rd. Liaodongwan Panjin124221 China R&D Center of Membrane Science and Technology School of Chemical Engineering Dalian University of Technology 2 Linggong Rd. Ganjingzi Dalian116024 China

To date, there has been little attention focused on jade powder, the leftover of the jade polishing process, although jade has been long considered precious and valuable. Herein, jade powder was characterized, followed by an investigation on its biocompatibility and bactericidal effects. Characterization conducted by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and Fourier-transform infrared spectroscopy showed that the main component of jade powder is tremolite, which is in good crystallization with no typical peaks of possible impurities observed. Tremolite's main elements are oxygen, calcium, magnesium, and silicon, all of which exist in the form of oxides. Water contact angle, trace element content, and in vitro cytotoxicity analyses demonstrated that jade powder is of hydrophilicity and good cytocompatibility and contains only parts-per-million-level heavy metals. Meanwhile, antibacterial evaluation proved that the jade powder had excellent antimicrobial effects against both gram positive and negative microbes such as Escherichia coli and Staphylococcus aureus. This study suggested that jade powder is a promising material that could be used in the fields of biological and medical applications. © 2023 by ASTM International, 100 Barr Harbor drive, PO Box C700, West Conshohocken, PA 19428-2959 ASTM International is not responsible, as a body, for the statements and opinions expressed in this paper. ASTM International does not endorse any products represented in this paper.

关键词： Biocompatibility

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Surface modification of Li1.3Al0.3Ti1.7(PO4)3 solid electrolytes by polymethylsiloxane-based polymer for all-solid-state lithium batteries

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Ceramics International 2024年第16期51卷 22556-22564页

作者： Liu, Kai-Wen Hsu, Ping-Hsuan Chang, Jeng-Kuei Wang, Fu-Ming Liu, Wei-ren Department of Chemical Engineering Chung Yuan Christian University Taoyuan City32023 Taiwan R&D Center for Membrane Technology Chung Yuan Christian University Taoyuan City32023 Taiwan Sustainable Energy Development Centre Graduate Institute of Applied Science & Technology National Taiwan University of Science and Technology Taipei City10607 Taiwan Department of Materials Science and Engineering National Yang Ming Chiao Tung University 1001 University Road Hsinchu City30010 Taiwan

Lithium all-solid-state batteries (LASSBs) face the challenge of poor performance, interface contact between electrodes, limiting voltage window of solid electrolytes, side reactions between cathode/solid electrolyte, anode/solid electrolyte and so on. To motivate the pursuit of advanced solutions, one of the efficient approaches is to design all-solid-state inorganic/polymer composite electrolytes. This study addresses limitations associated with Li1.3Al0.3Ti1.7(PO4)3 (LATP) as an inorganic solid electrolyte, including instability and short cycle life, by introducing organic-based ethylene glycol methyl ether methacrylate-co-acrylate acid functional groups (AAM950) polymer as a protective interphase between LATP pellet and Li metal. The synergistic effects of LATP pellet and AAM950 reduces the interfacial resistance between LATP pellet and Li metal and significantly suppresses lithium dendrite growth during charge and discharge processes. The ionic conductivity of LATP/AAM950 solid electrolyte exhibits ionic conductivity of 9.3 × 10−4 S/cm at room temperature, while Li stripping/plating tests demonstrates overpotential below 0.2 V over 100 cycles at a current density of 0.63 mA/cm2. Furthermore, the modified LATP/AAM950 solid electrolyte can withstand a current density of 249 mA/cm2 at room temperature, which was a dramatic improvement compared to the LATP pellet's one of only 3 mA/cm2. Finally, we assemble an all-solid-state full cell by using NCM622@LATP||AAM950/LATP/AAM950||Li, which delivers an initial discharge capacity of 165.4 mAh/g and remain 132.9 mAh/g after 100 cycles at 0.1C, achieving a remarkable 80.4 % retention. These advancements contribute significantly to the field of Li all-solid-state batteries, fostering innovation in the energy industry. © 2024 Elsevier Ltd and Techna Group S.r.l.

关键词： Pelletizing

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Synthesis and Performance of an Associative Anti-shear drag reducer Based on Hydrogen Bond Association of dodecyl Methacrylate

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China Petroleum Processing & Petrochemical Technology 2023年第1期25卷 23-33页

作者： Lu Yong Li Chenhao Li Hao Chen Yue Xu dan Wang Yiran Meng Yeqiao Zhang Xiaolai School of Chemistry and Chemical Engineering Shandong UniversityJinan 250061China PipeChina Eastern China Crude Oil Storage and Transportation Co. Ltd.Science and Technology R&D CenterXuzhou 221008China Shandong Dongyue Polymer Material Co. Ltd.Zibo 256401China State Key Lab of Fluorinated Functional Membrane Materials Zibo 256401China

Using K2S2O8-Na2SO3 as the redox initiation system,a hydrogen-bond-association-based dodecyl methacrylate system associative anti-shear drag reducer was synthesised by standard emulsion *** reaction process was simple and gentle as well as safe and *** design was carried out using molecular dynamics simulation *** results of infrared spectroscopy,thermogravimetric analysis,differential scanning calorimetry,gel chromatography,and laser light scattering showed that the reaction polymerisation was relatively complete,the product was uniform,the molecular weight distribution was controllable,and the synthesised polymer had good *** donor lauryl methacrylate-styrene-methacrylic acid(LMA-St-MAA)and acceptor lauryl methacrylate-styrene-dimethylaminoethyl methacrylate(LMA-St-dMA)polymers had an associative intermolecular interaction force,which increased the molecular cluster size of the associative system *** complex had good shear resistance,and the test results of the tube pump shear test showed that the synthesised associative oil-soluble polymer drag reduction system exhibited better drag reduction rate performance than poly-α-olefins over repeated *** research results provide a reference plan for minimising the number of station-to-station inputs,thereby ensuring the stability of oil pipelines and reducing transportation costs.

关键词： drag reducer associative effect drag reduction rate shear resistance

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Preparation of Poly-α-Olefin Microcapsule Particles Coated with Polyurethane as a drag reducer Based on Interface Polymerization

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China Petroleum Processing & Petrochemical Technology 2023年第2期25卷 101-112页

作者： Li Chenhao Lu Yong Li Hao Chen Yue Meng Yeqiao Zhou Pengfei Xu dan Wang Yiran Zhang Xiaolai Shandong University Jinan 250100China PipeChina Eastern China Crude Oil Storage and Transportation Co. LtdScience and Technology R&D CenterXuzhou 221000China Shandong Dongyue Polymer Material Co. Ltd.Zibo 256401China State Key Lab of Fluorinated Functional Membrane Materials Zibo 256401China

The molecular behavior of polyurethane(PU)coating materials during the surface adsorption of poly-α-olefin as a drag reducing polymer was explored by a molecular dynamics *** different PU capsule wall materials were synthesized using two reaction monomers,and a poly-α-olefin/PU drag reducer microcapsule was prepared based on interface *** structure,morphology,thermal stability,compressive strength,and drag reduction performance of the microcapsules were characterized and *** results showed that a non-bonding interaction induced the adsorption of the PU coating material,poly-α-olefin and PU then fused at the interface,and the PU coating material was embedded into the inner grooves of poly-α-olefin in the form of a local mosaic,thereby forming a stable core–shell *** morphological characterization indicated that PU and poly-α-olefin could form microcapsule *** thermal decomposition temperature of the microcapsule was dependent on the type of capsule wall *** microcapsule structure had a slight effect on poly-α-olefin drag *** system enabled poly-α-olefin to exist in powdered particles through microcapsulation,and had a good dispersion effect that facilitated storage and transport *** method effectively inhibited the accumulation and bonding of poly-α-olefin at room temperature.

关键词： drag reducer poly-α-olefin polyurethane microcapsules particles interfacial polymerization

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Oxygen-doped protonated C3N4 nanosheet as particle electrode and photocatalyst to degrade dye by photoelectrocatalytic oxidation process

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SEPArATION ANd PUrIFICATION TECHNOLOGY 2023年第1期312卷

作者： Chen, Hanlin Wang, Yixing Ye, Jing Cao, Zhijin Zhu, Kake Yang, Hu Xu, Zhenliang East China Univ Sci & Technol Chem Engn Res Ctr State Key Lab Chem Engn Membrane Science& Engn R&D Lab 130 Meilong Rd Shanghai 200237 Peoples R China Shanghai Inst Technol Sch Chem & Environm Engn 100 Haiquan Rd Shanghai 201418 Peoples R China East China Univ Sci & Technol Sch Chem Engn State Key Lab Chem Engn 130 Meilong Rd Shanghai 200237 Peoples R China

Three-dimensional photoelectrochemical oxidation (PECO) process could be a novel technology to boost degradation efficiency by adding photoactive particle electrodes (PEs) in solution. In this work, oxygen-doped protonated C3N4 (OP-C3N4) nanosheets derived from HNO3 treatment is testified as a new type of visible light responsive PEs for degradation of rhodamine B (rhB) and methylene blue (MEB) in NaCl and NaNO3 solutions, respectively. The resultant OP-C3N4 nanosheets show superior dispersion stability, high specific surface area, positive zeta potential, despite of a slightly lower separation efficiency of electrons and hole due to presence of defects, which leads to an improved dye photodegradation efficiency, i.e., ca. 40 % and ca. 30 % increase for rhB and MEB, respectively, compared to that of pristine g-C3N4 in salt solution. density Function Theory (dFT) calculations reveal that the promoting effect can be attributed to the alter of electrostatic potential, which favors adsorption of anionic ions and promotes formation of radicals. Electrochemical oxidation (EO) experiment verifies the potential of OP-C3N4 nanosheet as PEs for degradation of these dyes. The reaction rate constant (krhB = 0.0125 min(-1), kMEB = 0.0082 min(-1)) reaches about 1/3 that in the photocatalytic process. Meanwhile, a high degradation effect was found in NaCl solution due to the electrolysis of Cl- over OP-C3N4. Finally, the three-dimensional PECO process using the dispersed OP-C3N4 in solution was evaluated. For NaCl solution, the re-action rate constant (k(rhB) - 0.054 min(-1)) equals to the sum of that in the photo and EO process, but it is lower for NaNO3 solution. Meanwhile, the degradation mechanism of rhB over OP-C3N4 in salt solution was also analyzed, which is similar to that in water. The current investigation extends the application of OP-C3N4 and the three-dimensional PECO technology using visible light photoactive PE.

关键词： Photocatalyst Particle electrode dye-salt solution Three-dimensional photoelectrochemical oxidation

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Fabrication of Hollow Fiber Nanofiltration membrane with Poly(vinyl Chloride) Substrate for the removal of Chemicals of Concern

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Industrial and engineering Chemistry research 2023年第43期62卷 17914-17922页

作者： Liu, Sihua Shi, Le Wang, Xuan Hung, Wei-Song Zhang, Jianhua Lu, Xiaolong Lee, Kueir-rarn Wu, Chunrui Gao, Li State Key Laboratory of Separation Membranes and Membrane Processes School of Material Science and Engineering Tiangong University Tianjin300387 China Advanced Membrane Materials Research Center Graduate Institute of Applied Science and Technology National Taiwan University of Science and Technology Taipei10607 Taiwan Institute for Sustainable Industries and Liveable Cities Victoria University MelbourneVIC8001 Australia R&D Center for Membrane Technology Department of Chemical Engineering Chung Yuan University Taoyuan32023 Taiwan South East Water Corporation SeafordVIC3198 Australia

A hollow fiber nanofiltration (NF) membrane fabricated on poly(vinyl chloride) (PVC) substrate was studied for the removal of chemicals of concern (CoCs). The functional layer of the hollow fiber NF membrane was fabricated via interfacial polymerization of piperazine (PIP) and trimesoyl chloride (TMC) on the lumen side of the PVC ultrafiltration membrane. A gas sweeping method was employed during the fabrication of the NF functional layer and was assessed based on the separation performance of the NF membrane. It was found that the sweeping gas could increase the performance of the NF membrane, which is also affected by the concentration of PIP and TMC solutions. NF membranes prepared under optimized gas sweeping conditions had a Pb(NO3)2 rejection of 93% and a flux of about 24 L·m-2·h-1. The rejections to Na2SO4, MgSO4, NaCl, glucose, and sucrose were 96.5, 95.3, 53.7, 91.7, and 98.2%, respectively. Moreover, the results of spike tests show that the NF membrane could effectively reject the incident CoCs up to eight times the regulated values. © 2023 American Chemical Society.

关键词： Sodium chloride

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Modulating low-temperature interfacial polymerization with NaHCO3 for high-performance ultrathin nanofiltration membranes

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CHEMICAL engineering science 2025年 301卷

作者： Han, rui Jia, rui Xu, Zhen-Liang dai, Jia-Yue Tong, Yi-Hao Li, Hua-Xiang Xu, Sun-Jie East China Univ Sci & Technol Chem Engn Res Ctr Sch Chem Engn State Key Lab Chem EngnMembrane Science& Engn R&D Shanghai 200237 Peoples R China East China Univ Sci & Technol Sch Mat Sci & Engn Shanghai 200237 Peoples R China East China Univ Sci & Technol Shanghai Elect Chem Innovat Inst Shanghai 200237 Peoples R China East China Univ Sci & Technol Sch Informat Sci & Engn Shanghai 200237 Peoples R China

Conventional interfacial polymerization (IP) encounters significant challenges in achieving the desired nanofiltration (NF) membrane structure, owing to uncontrolled diffusion and ultrafast polymerization. Our study introduced carbonates into the low-temperature interfacial polymerization (LTIP) process to precisely regulate the diffusion of amine monomers and polymerization kinetics. Carbonates in the aqueous phase restrict the diffusion of amine monomers while promoting the generation of nanobubbles. Further utilization of the low-temperature oil phase not only retards polymerization but also facilitates the formation of foam nanostructures in the polyamide layer. density functional theory calculations and molecular dynamics simulations revealed the mechanisms underlying the regulation of amine monomer diffusion and gas-bubble release by carbonates and LTIP. The fabricated membrane has a smoother, ultrathin separation layer while maintaining a high permeability of 35.0 Lddle dot>m(-2)ddle dot>h(-1)ddle dot>bar(-1) (nearly doubled compared with the pristine membrane) and high Na2SO4 rejection of 99.5 %. This study confirms the practicality of the carbonate-modulated LTIP strategy.

关键词： Low-temperature interfacial polymerization Carbonate chemistry density functional theory calculations Molecular dynamics simulations

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