DIAMOND AND RELATED MATERIALS
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2022
·
IF 3.806
Wenshuai Jiang,Shumin Wang,Fei Lin,Zhenxin Li,Xiang Tian,Ruixia Ti,Chaoxin Zhang,Shaozhe Wang,Guoan Zhao,Wu Ren,Yi Yu
In this paper, we found that the presence of sodium chloride (NaCl) can effectively inhibit the diffusion of graphene oxide (GO) in water. Based on this discovery, we reported a simple preparation method of GO paper regulated by Na ions . By adjusting the drying temperature and the mass fraction of NaCl solution, the preparation and complete stripping of GO paper can be easily completed, thereby obtaining free-standing GO paper. Further, we also found that the introduction of sodium ions would cause changes in the microwave irradiation spectrum of GO paper, and the change was related to the mass fraction of NaCl solution used, which could be used to detect sodium ions and the concentration of NaCl solution. Besides, our study also showed that MWRGO paper with NaCl solution treatment can more effectively remove methylene blue in water, compared with MWRGO paper without NaCl solution treatment. This study provides the possibility of the preparation of GO paper based on seawater and also provides a new method for the detection of sodium ions and determination of sodium chloride solution concentration. It has important application prospects in the preparation of GO paper, sensor and water treatment.
研究领域:
材料科学
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环境科学
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传感器技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Di Li,Chuan Wang,Jiahui Hu,Wu Tang,Shan Jia,Meichen Guo,Cong Fan
A new organic polymer cathode namely poly(9,10-phenanthraquinone-alt-benzene) (PPQ, ∼190 mAh g −1 ) is designed and synthesized for sodium-ion batteries (SIBs). Adequate characterizations are carried out to define its polymer nature. In half cells, the discharge capacity of PPQ shows almost no attenuation, stably maintaining at 150 mAh g −1 during 300 cycles. In full cells, the PPQ II Na 3 Bi SIBs realize the stable discharge capacities of average 126 mAh g −1 cathode during 150 cycles (100 mA g −1 cathode ) and average 97 mAh g −1 cathode during 800 cycles (800 mA g −1 cathode ), along with the average discharge voltage of ∼ 1.5 V. To the best of our knowledge, the results of PPQ can represent the new advancement for organic polymer cathodes in SIBs.
研究领域:
材料科学
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能源存储技术
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Guoke Zhao,Ke Zhou,Ruirui Hu,Hongwei Zhu
The interactions between metal cations and graphene derivatives may bring about significant changes to the properties and structures of graphene-based devices, which further affect their performance. Under practical pressure-driven separation conditions, the presence of metal cations in the feeding solutions is universal. They not only play the role of target solutes but also act as the modifier to tune the structure and transmembrane resistance of graphene oxide (GO) membranes. Herein, the influences of hydrated Na + /Mg 2+ on the two-dimensional nanochannels of GO membranes under pressure driven conditions are revealed. Hydrated Na + tend to be confined in between GO sheets, leading to the expansion of the nanochannels which facilitates the passage of water molecules. The accumulation of hydrated Mg 2+ at the edges of GO sheets reduces both the cross-sectional area and the number of the transport pathways, increasing the transmembrane resistance of water molecules. On this basis, high flux Na + -GO nanofiltration membranes were designed, which exhibited ∼ 6 times increase in pure water flux compared with GO membranes. The water flux in dye solutions was increased by 4– 5 times without scarifying the rejection for methyl orange and direct yellow. The Na + -GO membranes showed good structural stability both in water and salt/dye solutions, confirming that the treatment with dynamic Na + flow is a reliable strategy to improve the nanofiltration efficiency of GO membranes. It was demonstrated that hot water filtration was a simple but efficient way to recover the initial structure and performance of GO membranes.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
CARBOHYDRATE RESEARCH
·
2024
·
IF 2.4
Xiaofang Ma,Caihong Li,Junyin Zhang,Jiang Xin,Isidore Mosongo,Jiahui Yang,Kaifeng Hu
The physicochemical properties and biological activities of polysaccharides depend on their structures. Monosaccharide composition analysis is indispensable for the structural characterization of polysaccharides and is helpful in the quality control of polysaccharide preparation. Here, using a model mixture and tamarind seed polysaccharide as examples, we demonstrated that a quantitative 2D NMR method, gsHSQC i (three gradient-selective Heteronuclear Single Quantum Coherence spectra acquired with incremented repetition times, i = 1, 2, 3) can directly quantify a variety of monosaccharides in solution with adequate precision and accuracy, requiring no derivatization, postprocessing steps and column separation. Both anomeric and non-anomeric signals of monosaccharides can be utilized for content determination. More accurate quantification of fructose in a mixture containing nine monosaccharides is obtained, which is difficult to achieve by quantitative 1D 1 HNMR and the common PMP-HPLC method (high-performance liquid chromatography through pre-column derivatization with 1-phenyl-3-methyl-5-pyrazolone) due to the peak overlapping and the poor derivatization efficiency, respectively. The results also revealed that Na[Fe(EDTA)] can serve as a proper relaxation-enhancing agent for saccharide samples to save experimental time. We expect that this approach can be applied as an alternative to analyzing the monosaccharide composition and be helpful in interpreting the structure of polysaccharides.
研究领域:
分析化学
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生物化学
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药学
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产品关联
DOI
PubMed
高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 8
·4525-4537
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IF 6.123
Wang Huiqiang,Fang Shengqiong,Zuo Miao,Li Zheng,Yu Xin,Tang Xing,Sun Yong,Yang Shuliang,Zeng Xianhai,Lin Lu
Removal of copper ions (Cu(II)) efficiently from water is crucial for water environment security. We use sustainable, low-cost, renewable cellulose derivatives (carboxymethylcellulose sodium (CMC-Na)) and polyvinyl alcohol (PVA) as the matrix, and cellulose nanocrystals (CNCs) as the functional addition. The CNC/CMC-Na/PVA hydrogel was prepared by the physical cross-linking method. Static adsorption experiments proved that CNC/CMC-Na/PVA hydrogel has a greater adsorption potential (108 mg/g) towards Cu(II). At the same time, the adsorption of Cu(II) on CNC/CMC-Na/PVA hydrogels is spontaneous and endothermic, and obeys the pseudo-second-order model with intra-particle diffusion. Furthermore, the primary adsorption mechanisms had been electrostatic attraction and surface complexation. Importantly, CNC/CMC-Na/PVA hydrogel has efficient absorbability and preferable reusability in actual water samples. Furthermore, the copper nanoparticles (Cu NPs) adsorbed on the surface of CNC/CMC-Na/PVA hydrogels were reduced with NaBH 4 in situ to realize the secondary utilization in CNC/CMC-Na/PVA hydrogels supported by Cu NPs. It is found that the material can be used as a catalyst to efficiently catalyze the conversion of HMF to BHMF (99%). Consequently, we provide insights into the hydrogel preparation that would possibly be promising novel adsorbents for the elimination of heavy-ion from sustainable water purification. Graphical abstract
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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水处理
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Hongming Jiang,Shuchang Yan,Jingzhi Yan,Chengyang Li,Yan Lin,Zengli Zhao,Zhen Huang,Hongyu Huang,Haibin Li
Red mud (RM) is an alkaline waste residue produced in the aluminum industry, which has a huge output and is difficult to treat. However, it can be used as raw material for preparing oxygen carrier (OC) for rich in Fe, Na and Ca. In this paper, three types of RM were selected, and the desulfurization performance and mechanism of RM OCs under different reaction conditions were discussed. The results show that the desulfurization capacity of RM OCs mainly comes from Na/Ca elements, while Fe 2 O 3 has no desulfurization capacity above 750 °C. WSRM OCs have good desulfurization performance, and the desulfurization efficiency of WS900 can reach 86.28 % at 900 °C, although high temperature is not conducive to sulfur fixation by RM OCs. WSRM OC prepared at 800–900 °C has good desulfurization activity, while the OC prepared at 1000 °C or above will have a significant decline in desulfurization performance. The components in RM OCs with desulfurization activity mainly include Na 2 Ti 3 O 7 and Ca in the form of Ca 2 SiO 4 and CaTiO 3 , while NaAlSiO 4 , Na 6 Al 4 Si 4 O 17 and Ca 2 Al 2 SiO 7 almost have no sulfur fixation capacity. The redox performance of the three RM OCs under multi-cycle conditions is little affected by H 2 S atmosphere; and WSRM OCs rich in Na and Ca have the best redox performance.
研究领域:
环境工程
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化学工程
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2016
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IF 3.014
Kangsheng Huang,Chenxing Yan,Kang Wang,Yipeng Zhang,Zhicheng Ju
Rational design and controllable synthesis of TiO 2 based materials with unique microstructure and excellent electrochemical performance for Na-ion batteries have been imperative requirement at present. In our work, TiO 2 with graphene-like (TiO 2 -GL) structure has been synthesized from P25 (commercial TiO 2 with phases hybriding) by skillful controlled hydrothermal synthesis conditions. As a result the obtained TiO 2 -GL still possesses hybrid phases, and delivered high reversible capacity, fantastic cycling performance and superior rate capability for Na-ion battery system. When discharged for 100 cycles at current density of 100 mA g −1 , the TiO 2 -GL shows a reversible capacity of about 150 mAh g −1 . Even when the current density is increased to 500 mA g −1 , a very stable and extraordinarily high reversible capacity of 100 mAh g −1 can be delivered. Obviously, the excellent performance are owing to the synergistic effect of hybrid phases and graphene-like structure.
研究领域:
材料科学
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电化学
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DOI
高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 43
·e202403318
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IF 1.9
Xinyue Zhang,Qiurong Chen,Yan Luo
Graphical In order to improve the stability and controlled release properties, NaClO 2 is microencapsulated based on emulsion crosslinking method adopting high biocompatibility sodium alginate (SA) and sodium carboxymethyl cellulose (CMC-Na) as shell material. The resulted sample is featured with selectivity and no secondary pollution, and brings about continuous degrading both liquid and gaseous formaldehyde. Sodium chlorite (NaClO 2 ) is a new type of air disinfectant, which can oxidize formaldehyde into carbon dioxide (CO 2 ) on account of releasing chlorine dioxide (ClO 2 ) gas under acidic condition. Unfortunately, NaClO 2 is prone to moisture absorption and decomposition when exposed to air. In this paper, NaClO 2 was microencapsulated based on emulsion crosslinking method for improving its stability and controlled release properties. Due to their high biocompatibility, sodium alginate (SA) and sodium carboxymethyl cellulose (CMC-Na) were selected as the wall material to prepare NaClO 2 -SA/CMC-Na composite microcapsules. The results showed that mean particle size of NaClO 2 -SA/CMC-Na composite microcapsules was about 225 nm, and their encapsulation ratio was up to 73.18%. In addition, the thermal stability and environmental tolerance of NaClO 2 are improved greatly through microencapsulating. It was proved by formaldehyde degradation testing that the efficiency of formaldehyde degradation using resulted samples can continue to increase after seven days in pH 6.5 environment, indicating their good controlled-release performance. Moreover, degradation efficiency on 30 µg/mL formaldehyde solution using the resulted microcapsules is up to 97.08%. Meanwhile, after 20 repetition degradation, NaClO 2 -SA/CMC-Na composite microcapsules can still continuously degrade formaldehyde gas. Therefore, NaClO 2 -SA/CMC-Na composite microcapsules reveal good stability and prolonged action on formaldehyde degradation.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Hanning Zhang,Mingxi Ren,Wei Jiang,Jie Yao,Limei Pan,Jian Yang
Sodium-ion batteries (SIBs) have attracted much attention owing to their abundant resources, low cost, suitable energy density and low potential window. However, SIBs still suffer from poor charge transmission kinetics caused by large Na + radius. Therefore, anode materials are considered as the key to the development of high-performance SIBs. Herein, hierarchical Sb 2 S 3 @m-Ti 3 C 2 T x composites with Sb 2 S 3 content of 40–60% were in-situ synthesized by a simple wet chemical method , in which amorphous spherical Sb 2 S 3 particles with a size of 150–200 nm nucleate and grow uniformly on the surface of m-Ti 3 C 2 T x with the formation of Ti-S bond. m-Ti 3 C 2 T x , as a three-dimensional conductive skeleton, not only improved the electron and Na + transportation, but also significantly inhibited the agglomeration and grain growth of Sb 2 S 3 particles, promoted the electrolyte penetration, and effectively absorbed the volume expansion of Sb 2 S 3 during charging and discharging cycles. As a result, the optimized 50% Sb 2 S 3 @m-Ti 3 C 2 T x showed good rate ability and cycling performance, including a capacity of 156 mAh g −1 after 100 cycles at 0.1 A g −1 and 72 mAh g −1 after 1000 cycles at 2 A g −1 with only 0.37% attenuation per cycle. This work provided a simple and effective strategy for the design and construction of MXene-based hybrids as SIBs anode.
研究领域:
材料科学
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能源存储
✓ 已验证
DOI
高影响因子
RSC Advances
·
2024
·Vol. 14
·期 35
·25852-25864
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IF 3.9
Renzhong Xue,Xiaosong Liu,Kun Yang,Xiang Zhu
In this study, Cd1−xNaxCu3Ti4O12 (x = 0, 0.02, 0.04, 0.06, and 0.08) ceramics were prepared via a solid-state method. The phase composition, microstructure, and defect characteristics as well as optical, dielectric, and nonlinear properties of the ceramics were systematically studied. A CuO second phase was detected in doped samples. Grain boundary precipitates, Na with a low melting point, and oxygen and cation vacancies together caused the grain size to first increase and then decrease with an increase in the Na+ doping amount. The abundant emerging cation vacancies with an increase in Na+ content led to a decrease in the optical energy band. The sample with x = 0.04 exhibited the highest ε′ value (∼35 800) due to its largest grain size. Moreover, it possessed a lower tan δ (∼0.053) at 10 kHz, which was attributed to the multiplication of insulating grain boundaries. The huge dielectric constant originated from Maxwell–Wagner polarization at low frequencies and followed the internal barrier effect model. The lowest tan δ (∼0.037) and optimal nonlinear properties (α = 3.66 and Eb = 3.82 kV cm−1) were obtained in the sample with x = 0.08, which were associated with its highest grain boundary resistance and barrier height. Electric modulus data proved that dielectric relaxation at low frequencies was associated with grain boundaries. Dielectric anomalies in the high temperature range were attributed to oxygen vacancies.
研究领域:
材料科学
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物理学
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产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Xu Qiuchen,Tang Shanshan,Li Nachuan,Wang Yan,Zhao Xiaoju,Zhang Xiao,Geng Shitao,Yuan Bin,Wang Shuo,Ouyang Zhaofeng,Liao Meng,Ma Linlin,Shang Ming,Sun Yifan,Peng Huisheng,Sun Hao
Rechargeable sodium-chlorine (Na-Cl 2 ) batteries show great promise in grid energy storage applications due to their high electrochemical performance. However, the use of highly corrosive thionyl chloride (SOCl 2 )-based electrolytes has severely hindered their real-world applications. Here we show a non-corrosive ester (methyl dichloroacetate) as a promising alternative to SOCl 2 , which can form a non-corrosive electrolyte with aluminum chloride and sodium bis(fluorosulfonyl)imide for high-performance rechargeable Na-Cl 2 batteries. The resultant battery shows a reversible capacity of up to 1200 mAh g −1 at a current density of 100 mA g −1 calculated based on the mass of carbon with a discharge voltage of ~2.5 V, a wide temperature range from −40 to 80 °C, and long-term cycling stability of 700 cycles at −40 °C, which outperforms conventional rechargeable Na-Cl 2 batteries and state-of-the-art Na metal batteries. The electrochemical performance and safety have been further extended to fibre batteries, which realize wearable applications of rechargeable Na-Cl 2 batteries. Based on donor number and charge transfer as two key descriptors, we further propose the design principle of organic electrolytes for rechargeable Na-Cl 2 batteries, which can fully unlock the designability and sustainability of organic solvents towards practical Na-Cl 2 batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Electronic Materials
·
2026
·
IF 4.7
Yi Han,Yichao Wang,Dong Liu,Xiang Hui,Xiaoshuang Ma,Pengju Sun,Jianqiang Li,Zhipeng Xing,Zhenfu Zhang,Li-Feng Zhu
(K,Na)NbO3-based ceramics are promising lead-free piezoelectrics due to their excellent piezoelectric coefficient (d33) and high Curie temperature (Tc), but their poor mechanical properties limit high-reliability applications. To address this issue, 0.97K0.5Na0.5Nb0.95Sb0.05O3-0.03Bi0.5Na0.5ZrO3-0.5%wtBiFeO3-xZrO2(KNNS-xZrO2) textured ceramics were developed. Excessive ZrO2 improved mechanical performance, while <001>-oriented samples exhibited strong piezoelectricity. At x = 0.01, the ceramics achieved high values in the KNN system: d33 ∼ 326 pC·N−1, Hv ∼ 8.46 ± 0.14 GPa, E ∼ 172 ± 4 GPa, and fracture toughness KIC ∼ 1.70 ± 0.09 MPa·m1/2. Based on these outstanding properties, a KNNS-0.01ZrO2 piezoelectric wristband was fabricated to monitor human heart rate, producing stable current signals under different motion states. This work provides insights for reliable piezoelectric sensors and actuators.
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DOI
高影响因子
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