MOLECULES
·
2019
·Vol. 24
·期 24
·4534
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IF 3.06
Yixin Cai,Liming Liu,Huafeng Tian,Zhennai Yang,Xiaogang Luo
Adsorption and desorption behaviors of tetracycline hydrochloride by activated carbon-based adsorbents derived from sugar cane bagasse modified with ZnCl2were investigated. The activated carbon was tested by SEM, EDX, BET, XRD, FTIR, and XPS. This activated carbon exhibited a high BET surface area of 831 m2g−1with the average pore diameter and pore volume reaching 2.52 nm and 0.45 m3g−1, respectively. The batch experimental results can be described by Freundlich equation, pseudo-second-order kinetics, and the intraparticle diffusion model, while the maximum adsorption capacity reached 239.6 mg g−1under 318 K. The effects of flow rate, bed height, initial concentration, and temperature were studied in fixed bed adsorption experiments, and adsorption data were fitted with six dynamic adsorption models. The results of characterizations and the batch experiments were analyzed to study the adsorption and desorption mechanisms. Tetracycline hydrochloride and activated carbon were bonded together by π–π interactions and cation–π bonds. Ethanol was used as an eluent which bonded with 10 hydrogen bond acceptors on tetracycline hydrochloride to form a complex by hydrogen bonding to achieve recycling.Keywords:adsorption;desorption;mechanism;sugar cane bagasse;activated carbons;tetracycline
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Fan Wang,HuaQing Zhang,ChunLing Liu,Wen Bao,YaJuan Hu,Xieraili Maimaitiyiming
PVA-based conductive hydrogels have enormous potential for applications in wearable flexible electronic devices, but their low ionic conductivity and mechanical strength hinder their practical utility. To address this challenge, we propose a PVA-based incorporating metal salt and zwitterion. We use PA(phytic acid) and HPMC (hydroxypropyl methylcellulose) - compatible properties to prepare PSBMA 1 -PMAZ 1.5 interpenetrating conductive hydrogel with good electrical signal responsiveness, repeatability, compression resistance, and low hysteresis (≤11.68 %). The hydrogel-based flexible strain sensor has a wide detection range, high sensitivity (GF = 1.1 at 0 − 600 %), stable electrical signal response to variations in temperature and humidity, and human movement detection capabilities. The detection range of hydrogel - based supercapacitors is 25 °C - 40 °C, which indicates that the device assembled with activated carbon as the electrode has good capacitance characteristics, and the multifunctional characteristics of PSBMA 1 -PMAZ 1.5 hydrogels are poised to serve as a demonstration for a new generation of flexible electronic products.
研究领域:
材料科学
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生物医学工程
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Dequan Wei,Ying Chen,Shenghua Lv,Jingjing Zuo,Leipeng Liu,Yanlu Mu,Jinru Liu,Jiaqi Wang
Flexible smart sensing materials are gaining tremendous momentum in wearable and bionic smart electronics. To satisfy the growing demand for sustainability and eco-friendliness, biomass-based hydrogel sensors for green and biologically safe wearable sensors have attracted significant attention. In this work, we have prepared MCC/PAA/AgNWs/CNTs hydrogel sensors with excellent conductive sensing properties by a simple physical blending method. The ZnCl 2 solvent system was used to dissolve the MCC, followed by introducing acrylic acid to polymerize under UV illumination. Subsequently, CNTs and AgNWs were introduced into the hydrogel network to obtain hydrogel with excellent conductive sensing and antibacterial properties. Here, the physical and chemical interactions between the components significantly improved the mechanical properties of the hydrogels, exhibiting good tensile strength (0.45 MPa), elongation at break (558 %) and adhesion properties. Hydrogel presented outstanding electrical conductivity and significantly elongation sensitive (GF = 4.73 when elongated 90–120 %). Additionally, the hydrogel was also found to have significant antimicrobial activity against both Escherichia coli and Staphylococcus aureus , and the antibacterial effect was almost 100 %. With high sensitivity, stability, and reproducibility, these hydrogel strain transducers can detect various human movements, including finger flexion, wrist movement, joint motion, and heartbeat.
研究领域:
材料科学
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生物医学工程
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可持续发展
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DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Zhichao Shang,Mi Feng,Ming Jiang,Zhencai Zhang,Sihao Liu,Shijie Wang,Fei Xu
Bisphenol compounds play a pivotal role as essential diol monomers in the synthesis of numerous engineering plastics. However, conventional methods for their preparation often involve the use of concentrated inorganic acids, leading to significant environmental pollution and equipment corrosion. Herein, we developed a strong inorganic acid-free synergistic catalytic system consisting of a Lewis–Brønsted acid catalyst composed of ZnCl2 and 3-mercaptopropionic acid. This system enabled the highly efficient preparation of bisphenol compounds through the Friedel–Crafts alkylation reaction of ketones with phenols or phenoxyethanol. The highest selectivity of 9,9-bis[4-(2-hydroxyethoxy)phenyl]fluorene can reach 96.4% at 110 °C for 2 h, which was higher than that of the traditional sulfuric acid method with a selectivity of 85.0%. A mechanistic study revealed that the carbonyl group of the ketone was first activated by the coordination ability of Zn2+ from the Lewis acid, which facilitated the subsequent protonation process initiated by the acidic site of Brønsted acid.
研究领域:
化学
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催化
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材料科学
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环境科学
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 51
·2410305
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IF 18.5
Yang Song,Yongduo Liu,Daojun Long,Xiongxin Tao,Shijian Luo,Yuran Yang,Hao Chen,Meng Wang,Siguo Chen,Zidong Wei
Zinc metal has emerged as a promising candidate for high-capacity and low-cost anodes in aqueous zinc-ion batteries; nevertheless, it encounters serious obstacles, including low cycling stability and poor reversibility, caused by parasitic reactions and the formation of zinc dendrites. Herein, the study proposes a novel nonprotonic dimethylacetamide (DMAC)/ZnCl 2 /LiCl electrolyte that enables both solvation structural modulation of [ZnCl x ] 2-x and the cationic electrostatic shielding effect of [Li(DMAC)] + by controlling the concentration of LiCl. The optimal concentration of LiCl electrolyte (0.28 m ), which results in the highest ratio of [ZnCl 3 ] − , strikes a balance between low desolvation energy and a high mass transfer rate while promoting homoepitaxial deposition of Zn (002). Moreover, inert [Li(DMAC)] + ions, which possess a lower reduction potential, preferentially adsorb onto zinc protrusions, mitigating the tip effect. Leveraging electrolyte engineering, the zinc deposition/stripping process results in impressive long-term stability, surpassing 2,800 cycles, and the Zn||MnO 2 cell also achieves a stable lifespan extending beyond 1400 cycles. The research highlights the potential of LiCl as an additive in the modulation of water-free electrolytes.
研究领域:
电化学
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储能
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电池材料
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水系电池
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材料科学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2021
·
IF 8.128
Xiaoqing Lei,Lijin Huang,Ke Liu,Lei Ouyang,Qin Shuai,Shenghong Hu
Developing high-performance materials for the efficient removal of pharmaceutical contaminants from polluted water has gained tremendous attention but is still a huge challenge. Herein, various N -doped porous carbons (NPCs) were fabricated via a facile and solvent-free pyrolysis strategy by using a mixture of melamine , hexamethylenetetramine , Pluronic F 127, and ZnCl 2 as precursor. The resulting NPCs featuring large specific surface areas (803–1002 m 2 /g) and high nitrogen content (3.79–5.24%) were used as efficient adsorbent for the capture of ibuprofen (IBP) from water. Due to the combination of abundant mesoporous and microporous structure as well as high nitrogen content, the adsorption equilibrium was achieved within 60 min and the adsorption capacity was calculated to be 113 mg/g. Furthermore, it was found that the adsorption capacity exhibited a good correlation with the nitrogen content. In addition, the adsorption capacity of the resulting NPC was well-maintained even after 4 cycles due to its superior stability. The study is expected to encourage the rational design and synthesis of versatile heteroatom-doped porous carbons for practical application in the field of environmental remediation.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
Molecular Catalysis
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2023
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IF 4.6
Mengyu Dou,Yan Qiao,Xu Hu,Hengyang Miao,Ligong Zhou,Xuekuan Li,Xianglin Hou,Yingxiong Wang,Mingxing Tang
The poor textural properties of initial biochar materials have hindered their extensively applied as catalyst supports. Herein, cellulose biochar materials with the gradient porous and high specific surface area were synthesized by adding different ratios of ZnCl 2 , and as supports to prepare Pd/C cel catalysts for efficient maleic acid hydrogenation in water. The characterization results indicated that the textural propertiesand dispersion of Pd in Pd/C cel catalysts depended on the ratio of ZnCl 2 to cellulose. The Pd/C cel ZnCl 2(1:3) catalyst exhibited the best catalytic activity among all catalysts and outstanding stability for reusing 8 times under mild conditions (60 °C, 2 MPa). In addition, this synthesis strategy was also suitable for other biomass materials (glucose, sucrose, and starch) and the catalytic performance of ZnCl 2 -modified Pd/C catalysts in maleic acid hydrogenation reaction also improved dramatically. The carbonization mechanism was discussed by TG-MS and the results illustrated that ZnCl 2 reduced the carbonization temperature and altered the pyrolysis behavior of biochar as a result of excellent catalytic behavior. This work provided a facile and universal strategy for synthesizing biochar high-efficient supported catalysts with gradient porous structure and high specific surface area.
研究领域:
催化
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材料科学
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化学工程
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环境科学
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DOI
高影响因子
Nano-Micro Letters
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2023
·Vol. 16
·期 1
·1-17
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IF 26.6
Nan Jingya,Sun Yue,Yang Fusheng,Zhang Yijing,Li Yuxi,Wang Zihao,Wang Chuchu,Wang Dingkun,Chu Fuxiang,Wang Chunpeng,Zhu Tianyu,Jiang Jianchun
Solid-state zinc-ion capacitors are emerging as promising candidates for large-scale energy storage owing to improved safety, mechanical and thermal stability and easy-to-direct stacking. Hydrogel electrolytes are appealing solid-state electrolytes because of eco-friendliness, high conductivity and intrinsic flexibility. However, the electrolyte/electrode interfacial contact and anti-freezing properties of current hydrogel electrolytes are still challenging for practical applications of zinc-ion capacitors. Here, we report a class of hydrogel electrolytes that couple high interfacial adhesion and anti-freezing performance. The synergy of tough hydrogel matrix and chemical anchorage enables a well-adhered interface between hydrogel electrolyte and electrode. Meanwhile, the cooperative solvation of ZnCl 2 and LiCl hybrid salts renders the hydrogel electrolyte high ionic conductivity and mechanical elasticity simultaneously at low temperatures. More significantly, the Zn||carbon nanotubes hybrid capacitor based on this hydrogel electrolyte exhibits low-temperature capacitive performance, delivering high-energy density of 39 Wh kg −1 at −60 °C with capacity retention of 98.7% over 10,000 cycles. With the benefits of the well-adhered electrolyte/electrode interface and the anti-freezing hydrogel electrolyte, the Zn/Li hybrid capacitor is able to accommodate dynamic deformations and function well under 1000 tension cycles even at −60 °C. This work provides a powerful strategy for enabling stable operation of low-temperature zinc-ion capacitors.
研究领域:
材料科学
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电化学
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能源存储
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DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 36
·17730-17739
·
IF 9.931
Rui Zhang,Xiangxia Jing,Yanting Chu,Lei Wang,Wenjun Kang,Denghu Wei,Haibo Li,Shenglin Xiong
A novel monolithic carbon sponge is prepared by a ZnCl2-assisted carbonization of commercial melamine foam (MF) at 800 °C in a N2 atmosphere. The as-prepared nitrogen/oxygen co-doped carbon sponges (NOCSs) can be directly applied as monolithic electrodes for supercapacitors without using any additives. It is found that ZnCl2 activation plays an important role in improving the supercapacitive behavior of NOCSs. Compared with the NOCS without ZnCl2 activation treatment, the optimal NOCS-1/10, obtained with a ZnCl2/MF weight ratio of 1 : 10, has the best capacitive performance due to its unique porous architecture, rich pseudocapacitance-active species, and good electron/ion transfer feature. It exhibits a high specific capacitance (242 F g−1 at a current density of 0.5 A g−1 and 325 F g−1 at a scan rate of 10 mV s−1) and good electrochemical cyclability (97% after 10 000 cycles at 5.0 A g−1). When being further assembled into an all-solid-state supercapacitor (PVA/KOH electrolyte), it can deliver an energy density of 4.33 W h kg−1 at a power density of 250 W kg−1 and 3.13 W h kg−1 at a power density of 3 kW kg−1.
研究领域:
材料科学
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电化学
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能量存储
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Lin Yang,Yudong Fu,Honghai Liu,Qiaojun Nie,Ming Zhang,Zhongrong Shen
Zinc (Zn) metal anodes have been extensively investigated in aqueous Zn-ion batteries (AZIBs). Nevertheless, severe dendrite issues caused by uneven ion diffusion and Zn deposition greatly influence the stability and safety of AZIBs. Herein, a novel three-electrode tubular cell assembled from simple materials is constructed for both electrochemical measurement and visual characterization. Measured by the tubular cell, a water-in-salt electrolyte (WiSE) exhibits excellent ionic conductivity (33.29 mS cm–1) and reduced corrosivity, which is prepared by incorporating cellulose and polyethylene glycol (PEG) into concentrated zinc chloride (ZnCl2) solution. The results reveal that the functional groups of cellulose and PEG in WiSE can regulate the solvation structure of Zn2+, thereby alleviating consecutive side reactions and inhibiting the formation of byproducts. The inherent ion channels formed by the polymer chains and the physical barriers constructed by PEG on the Zn surface further facilitated the uniform deposition of Zn2+ along the (002) crystal plane, enabling the Zn symmetric battery to achieve an ultralong cycle life of 1000 h at a current density of 2 mA cm–2.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-11
·
IF 16.6
Liang Guojin,Liang Bochun,Chen Ao,Zhu Jiaxiong,Li Qing,Huang Zhaodong,Li Xinliang,Wang Ying,Wang Xiaoqi,Xiong Bo,Jin Xu,Bai Shengchi,Fan Jun,Zhi Chunyi
The chlorine-based redox reaction (ClRR) could be exploited to produce secondary high-energy aqueous batteries. However, efficient and reversible ClRR is challenging, and it is affected by parasitic reactions such as Cl 2 gas evolution and electrolyte decomposition. Here, to circumvent these issues, we use iodine as positive electrode active material in a battery system comprising a Zn metal negative electrode and a concentrated (e.g., 30 molal) ZnCl 2 aqueous electrolyte solution. During cell discharge, the iodine at the positive electrode interacts with the chloride ions from the electrolyte to enable interhalogen coordinating chemistry and forming ICl 3 - . In this way, the redox-active halogen atoms allow a reversible three-electrons transfer reaction which, at the lab-scale cell level, translates into an initial specific discharge capacity of 612.5 mAh g I2 −1 at 0.5 A g I2 −1 and 25 °C (corresponding to a calculated specific energy of 905 Wh kg I2 −1 ). We also report the assembly and testing of a Zn | |Cl-I pouch cell prototype demonstrating a discharge capacity retention of about 74% after 300 cycles at 200 mA and 25 °C (final discharge capacity of about 92 mAh).
研究领域:
电化学
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电池技术
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材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2019
·Vol. 35
·期 4
·674-679
·
IF 1.071
Shen Xizhou,Song Hao,Fang Liuya,Deng Hang,Gan Feng,Shen Zhi
Since the content of thiophene in coking crude benzene is high, it is necessary to remove it from coking crude benzene for efficient utilization. In this study, an important intermediate, N, N -dimethyl-2-thiophenecar-boxamide, was synthesized from thiophene and dimethylcarbamyl chloride. The influences of the dosages of dimethylcarbamyl chloride and ZnCl 2 catalyst, reaction temperature and time on the removal rate were further explored based on the reaction kinetics. The structure of the target product was characterized by means of MS, 1 H NMR and 13 C NMR. The removal rate of thiophene was 98.14% after the reaction for 2 h and thiophene was almost removed after the reaction for 3 h under the optimal reaction conditions[a molar ratio of n (thiophene): n (dimethylcarbamyl chloride): n (ZnCl 2 )=1:12:10, 300 r/min, 318 K and 101.325 kPa]. The acylation of thiophene with dimethylcarbamyl chloride was approximately in accord with the first order kinetic equation at 303–323 K. The activation energy was 53.9850 kJ/mol and the pre-exponential factor was 1.4521×10 9 h −1 .
研究领域:
化学工程
·
有机化学
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催化
·
石油炼制
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）