JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2024
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IF 2
Hongxiang Xu,Wentao Li,Junfeng Wang,Jiushuai Deng,Shangqing Chen
After the NaClO solution was used to purify acetylene gas, the solution contained significant amounts of NaCl, Na2SO4, and Na2HPO4. The phase equilibrium data is the most important basic information for recovering sodium salts. In this study, the solubilities and dry-salt phase diagram for the system (Na+//Cl–-SO42–-HPO42–-H2O) were systemically studied. The dry-salt phase diagram contained one invariable point, three univariate solubility curves, and three single salt crystallization regions corresponding to NaCl, Na2SO4, and Na2HPO4·12H2O at 298.15 K and 0.1 MPa. Based on the ELEC-NRTL and Pitzer model embedded in the Aspen Plus, the phase equilibrium data for the ternary subsystem (Na+//Cl–-SO42–-H2O, Na+//Cl–-HPO42–-H2O, and Na+//SO42–-HPO42–-H2O) at 298.15 K and 0.1 MPa taken from the literature were first predicted to verify the applicability of parameters from the default database and literature. Subsequently, the models were optimized by literature solubility data, and then, the obtained parameters can well predict the phase equilibrium data for the ternary subsystem at 298.15 K and 0.1 MPa. All of these will provide basis data for the separation of sodium salt from the Na+//Cl–-SO42–-HPO42–-H2O system.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Xu Liu,Jingzhe Li,Zewang Liu,Guang-zai Nong
The interfacial tuning of carbon materials is paramount to enhancing capacitive performance. Heteroatom doping significantly alters carbon materials' structural, electronic, and surface properties, improving their electronic conductivity and ion transport pathways. This process also introduces additional energy storage sites and improves structural stability to meet the requirements of advanced electrochemical energy storage systems. A N/Cl co-doped porous carbon material has been synthesised in this study. The material has a surface area of 1849.778 m 2 /g and a specific capacitance of up to 324 F/g at 0.5 A/g. Capacitance retention was as high as 89.69 % after 5000 cycles at 10 A/g. Furthermore, a symmetric supercapacitor based on BC121–800 exhibits an energy density of 11.6 Wh/Kg at a power density of 250.4 W/Kg. This study contributes novel strategies to enhance energy storage technologies.
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MACROMOLECULAR RAPID COMMUNICATIONS
·
2026
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IF 4.1
Xinhaoran Hu,Chenyu Sun,Yang Hu,Li Yang,Cencong Wang,Quanling Yang,Chuanxi Xiong,Zhuqun Shi
Growing focus on health and quality of life is driving increasing demand for skin-like wearable sensors in human motion monitoring and healthcare. Unlike traditional e-skin, ionic skin utilizes a polymer network scaffold with mobile ions, effectively overcoming the issue of poor dispersion of conductive fillers in polymer matrices. As an ionic liquid with facile synthesis and low cost, 1-ethyl-3-methylimidazolium chloride ([EMIM]Cl) forms strong interactions with both polymers and water molecules. Cellulose is a natural polymeric material with advantages such as low cost, environmental friendliness, and renewability. 2,2,6,6-Tetramethylpiperidinyl-1-oxyl (TEMPO)-oxidized cellulose nanofibrils (TOCNs) exhibit excellent biocompatibility. In this work, the TOCN-[EMIM]Cl ionic hydrogel was formed by mixing a TOCN dispersion with [EMIM]Cl ionic liquid, followed by Ca 2 + cross-linking. By adjusting the [EMIM]Cl content from 0 to 3 wt.%, the conductivity of the TOCN-[EMIM]Cl hydrogel increased from 9.43 × 10 −5 to 4.13 × 10 −4 S cm −1 . The obtained ionic skin exhibits high transparency, with a sensitivity of 2.11 kPa −1 , rapid response/recovery times (< 50 ms), and excellent cyclic stability (> 5000 cycles). Stable and distinguishable signal outputs have been achieved for human joint movements (wrist, elbow, and knee), demonstrating significant potential in flexible wearable sensors and health monitoring applications.
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PubMed
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JOURNAL OF LUMINESCENCE
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2017
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IF 2.686
Meng Li,Xiao Zhang,Yingying Du,Ping Yang
Halide perovskites have attracted enormous attention as a novel optoelectronic material showing bright emission recently. In this paper, we chose CsPbX 3 nanocrystals (NCs) as an example to study the structural, morphological and optical properties . We have synthesized monodispersed colloidal inorganic cesium lead halide perovskites (CsPbX 3 , X = Cl, Br and I, or mixed lead halide CsPb(Cl/Br) 3 and CsPb(Br/I) 3 ) NCs with various morphologies and brightly luminescent properties. The emission wavelength of resulting CsPbX 3 NCs can be tuned from 440 nm to 696 nm by varying the amount of different PbX 2 (X = Cl, Br and I), while maintaining high quantum yields up to 95% and narrow emission spectra . The average lifetime of the NCs is several ns to hundred with changing the composition . The blinking of the NCs in terms of a binary (on/off) process is different from II-VI quantum dots . Interestingly, we find that CsPbBr 3 NCs to Cs 4 PbBr 6 NCs or a mixture of CsPbBr 3 NCs and Cs 4 PbBr 6 NCs were obtained by adjusting the amount of oleic acid (OA)-Cs precursor. The optical properties of these NCs have been controlled by varying their composition. Moreover, the injection speed of Cs-OA precursor enables the control of CsPbI 3 NCs with different morphology, which can be tuned from litter nanoparticles to uniform nanorods . This finding can serve as an ideal platform for the investigation of fundamental properties.
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Science China-Materials
·
2021
·Vol. 64
·期 6
·1378-1385
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IF 8.273
Fu Yuanyuan,Ma Cheng
The interplay between solid electrolytes and electrodes is of vital importance to the performance of all-solid-state Li batteries. Recently, halide superionic conductors have emerged as a new family of high-performance solid electrolytes, but their compatibility with Li metal, i.e., the anode with the highest theoretical capacity, has not been systematically studied. Here, we investigate the interaction between Li metal and two representative halide solid electrolytes: Li 3 YCl 6 and Li 3 YBr 6 . Both materials are found to form interphases with Li, similar to most solid electrolytes. However, the interphases observed here contain electronic conducting components, which are detrimental to their compatibility with Li. By elucidating this phenomenon, the present study provides guiding principles for improving the Li compatibility of halide solid electrolytes.
研究领域:
材料科学
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电化学
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固态离子学
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能源存储
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电池技术
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WATER SCIENCE AND TECHNOLOGY
·
2015
·Vol. 71
·期 11
·1679-1685
·
IF 1.106
Hu Xuefeng,Wang Xiaowen,Dong Liuliu,Chang Fei,Luo Yongming
Ag speciation in a chloride medium was dependent upon the Cl/Ag ratio after releasing into surface water. In this study, the photoreaction of in situ formed Ag–Cl species and their effects on aniline photochlorination were systematically investigated. Our results suggested that formation of chloroaniline was strongly relevant to the Cl/Ag ratio and could be interpreted using the thermodynamically expected speciation of Ag in the presence of Cl − . AgCl was the main species responsible for the photochlorination of aniline. Both photoinduced hole and •OH drove the oxidation of Cl − to radical •Cl, which promoted the chlorination of aniline. Ag 0 formation was observed from the surface plasmon resonance absorption during AgCl photoreaction. This study revealed that Ag + released into Cl − -containing water may result in the formation of chlorinated intermediates of organic compounds under solar light irradiation.
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POWDER TECHNOLOGY
·
2026
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IF 5.5
Xueling Yi,Jieran Fang,Yongwei Duan,Caihua Pan,Hongzhen Li,Xiaohui Duan
Microstructure construction is an effective strategy for regulating the performance of energetic materials. Herein, CL-20@Al microspheres were fabricated by integrating porous CL-20 spherulites with Al via a rapid solvent–nonsolvent method. The results show that Al is uniformly distributed on the surface of CL-20 spherulites, and the resulting CL-20@Al microspheres possess a narrow particle size distribution, abundant nanoscale pores and enhanced dispersibility. Compared to the physical mixture, the CL-20@Al microspheres demonstrate significantly improved energy release performance, with increases of 10.4% in heat release, 33.3% in peak pressure, and 24.4% in pressurization rate. Laser ignition further reveals a 72.5% reduction in ignition delay time and a 66.8% increase in combustion rate. Meanwhile, the CL-20@Al microspheres also exhibit significantly reduced impact sensitivity compared to CL-20 spherulites. The porous structure, intimate Al/CL-20 interfacial contact, and uniform Al distribution on the porous surface collectively enhance the laser ignition and energy release of CL-20@Al microspheres.
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Science China-Materials
·
2026
·
IF 7.7
Zheng Guiping,Li Zijian,Zhou Shizheng,Jang Haeseong,Kim Min Gyu,Qin Qing,Hou Liqiang,Liu Xien
Direct electrolysis of seawater for hydrogen production offers a vital route to circumvent freshwater limitations and advance a sustainable hydrogen economy. Herein, we present a novel catalyst design strategy based on the co-doping of Ru atoms with strong chloride affinity and Cr atoms serving as Lewis acid centers into a nickel phosphide matrix (RuCr-Ni 3 P). This material is a highly active anode for direct alkaline seawater electrolysis, offering outstanding oxygen evolution reaction (OER) selectivity and operational longevity exceeding 4000 h under industrially relevant conditions. Mechanistic investigations reveal that chloride ions are not merely detrimental impurities, but are selectively captured by Ru sites to form a dynamic Ru–Cl coordination motif. This interaction electronically modulates adjacent Ni active centers, facilitating the generation of high-valent Ni >3+ species and switching the dominant OER pathway from the lattice oxygen mechanism (LOM) to the more efficient adsorbate evolution mechanism (AEM). Simultaneously, Cr sites promote the formation of Cr–OH species, which cooperatively create a localized alkaline microenvironment favorable for OER on the high-valent Ni centers. This dual-site synergistic mechanism, wherein Ru sites regulate chloride and Ni/Cr sites drive catalysis, effectively transforms Cl − from a performance-limiting species into a chemical switch that concurrently enhances both activity and stability.
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Nature Communications
·
2026
·
IF 18.1
Deng Chuyan,Zhou Yujun,Cai Xin,Zhang Xuan,Wang Yunlong,Qi Junwen,Zhu Zhigao,Yang Yue,Li Jiansheng
Electrocatalytic dehalogenation can effectively detoxify chlorinated organic pollutants (COPs) by cleaving C–Cl bonds in wastewater treatment, however, it often fails to achieve complete mineralization. In particular, the fate of the released Cl - has often been overlooked and whether they can be recycled and reutilized to facilitate pollutant degradation has remained unclear. Herein, a reduction–oxidation cascade system is constructed, in which Cl - liberated during electrocatalytic reduction is directly converted into reactive chlorine species (RCS) during the subsequent oxidation step, enabling complete mineralization of organic pollutants. Quenching experiments and electron paramagnetic resonance spectroscopy (EPR) confirm the in situ reutilization of detached Cl - . Laser scanning confocal microscopy (LSCM) visualizes the adsorption and transformation of Cl - on the electrode surface, while ab initio molecular dynamics (AIMD) calculations reveal the interfacial concentration distribution of Cl - and the energy profiles of its migration. This work establishes a cascade electrocatalytic strategy that couples reduction and oxidation, enabling chlorine reutilization and providing a sustainable pathway for the removal and resource recovery of COPs.
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ENVIRONMENTAL RESEARCH
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2026
·
IF 8.2
Pengyu Liang,Xixuan Zou,Mandi Liu,Xinhua Xu,Shuchi Zhang,Dandan Ma,Donglei Wu
Groundwater is a critical component of water resources and plays a fundamental role in maintaining ecological stability and supporting economic development. Industrial activities constitute a major source of groundwater contamination. Controlling groundwater pollution in industrial production facilities has become a key priority in environmental management. In this study, we present a high-performance ex situ electrochemical remediation system designed to treat contaminated saline (Cl–Na type) groundwater from an operational coastal chemical park. The system, optimized with a Ti/RuO 2 –IrO 2 anode and Ni cathode, achieved complete removal of ammonium nitrogen (100%) and converted 79% of total nitrogen to harmless N 2 within 45 min at a current density of 5.0 mA cm −2 . Energy consumption was as low as 1.2 kWh·m −3 . Remediation efficacy was primarily driven by in situ–generated reactive chlorine species (RCS) (e.g., Cl•, Cl 2 • - , ClO•), whose formation was significantly enhanced by the presence of bicarbonate (HCO 3 − ). Notably, the system exhibited superior removal efficiency for persistent humic acid–like dissolved organic matter (DOM) compared with biodegradable protein-like DOM, resulting in a 71% reduction in overall fluorescence intensity. The system maintained robust performance across different real groundwater samples (energy consumption: 1.2-2.1 kWh·m −3 ) and demonstrated excellent electrode stability. These results demonstrate that the technology is an economically viable and effective approach for on-site remediation of contaminated groundwater in challenging coastal industrial environments.
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JOURNAL OF MEMBRANE SCIENCE
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2025
·
IF 9
Yucai Li,Can Deng,Haotian Hu,Yida Wang,Zijian Qi,Cong Chen,Cailong Zhou,Liang Shen
Polyamide thin-film composite (PA TFC) membranes synthesized via conventional interfacial polymerization (IP) often underperform in Cl − /SO 4 2− separation due to their subpar spatial architectures. This study presents a novel strategy to fabricate advanced anion-selective nanofiltration (NF) membranes by functionalizing PA selective layer pore walls with nitrogen/oxygen-containing heterocyclic compounds (crown ether and cyclen) to tailor intrapore chemical microenvironments. Both experimental validations and molecular simulation results demonstrate that precise regulation of chemical interactions between the membrane matrix and permeation species (NaCl/Na 2 SO 4 ) enables controlled tuning of diffusion energy barriers for anions traversing the membrane. Beyond size exclusion and charge repulsion mechanisms, we employ transition state theory to elucidate the fundamental Cl − /SO 4 2− separation mechanism. The distinct roles of these compounds in modulating IP reaction kinetics and their impacts on membrane microstructure are systematically investigated. Integration of heterocycles into the PA network yields more hydrophilic, less densely packed membranes. Resultant cyclen-modified membranes achieve exceptional separation performance (water flux of 26.65 L m −2 h −1 bar −1 , Cl − /SO 4 2− selectivity of 223), while 15-crown-5-modified membranes exhibit remarkable Cl − /SO 4 2− selectivity (690, Na 2 SO 4 rejection of 99.71 %) with maintained water flux (17.50 L m −2 h −1 bar −1 ). These modified membranes also exhibit robust long-term stability and excellent fouling resistance. This work establishes a novel pathway for developing high-performance Cl − /SO 4 2− separation membranes through engineered control of ion diffusion energy barrier.
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POLYMER
·
2022
·
IF 4.432
Junping Lv,Lin Zhu,Meng Zhang,Zexu Zhao,Shu-Wei Chen,Jinyi Wang
Actuators with controllable and reversible morphing towards environment stimuli have great potential applications in diverse fields. In spite of good progress made over the past decades, simple and efficient preparation of multi-response actuators is still a challenge. Here, we report a strategy to prepare humidity and near infrared (NIR) dual-response actuators with controllable and reversible bending or twisting deformation. The actuators were made up of two layers, one was polyvinyl butyral (PVB) layer with humidity and NIR inertness, and the other was chlorine-modified polypyrrole (PPy-Cl) doped poly(N-isopropylacrylamide-co-benzophenone) (PNIPAM-ABP) composite layer, taking advantage of the NIR photothermal conversion capability of PPy-Cl, along with the thermal-responsive PNIPAM-ABP. Upon NIR light irradiation , PPy-Cl converted light energy into heat, which subsequently induced the shrinkage of poly(N-isopropylacrylamide) (PNIPAM) chains; upon a high-humidity environment, PPy-Cl absorbed water molecular and transferred it into PNIPAM polymer , which further caused the bilayer to shrink or swell in an asymmetric manner, consequently leading to reversible bending or unbending behaviors. Interestingly, upon ultraviolet (UV) light irradiation with a grid photomask, the bilayer actuators showed bending or twist behaviors along with a special direction. The bionic flowers made from the actuators could imitate sunflower's opening and closing behaviors in response to NIR or humidity. The dual-response actuator could also imitate the lifting weight behaviors of forklifts. As an interesting example for potential utilization, a smart four-wheel vehicle was constructed using the bilayer actuator, showed excellent fast-moving performance.
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