Functional Materials Letters
·
2024
·
IF 1.2
Chao Zou,Yun Huang,Xingquan Wei,Amin Song,Wenhao Ren,Saisai Li,Junyuan Gan,Xing Li,Mingshan Wang,Yuanhua Lin
Gel polymer electrolyte (GPE) based on polymer matrix of lignocellulose and gelatinized potato starch is prepared, and elemental sulfur is introduced as an additive for the first time. The polymer matrix has shown excellent performances including liquid electrolyte uptake, tensile strength and thermal stability. The ionic conductivity and electrochemical stability window of the corresponding GPE are improved with the introduction of the elemental sulfur. Furthermore, the addition of elemental sulfur can be reduced into short-chain Li 2 S and Li 2 S 2 on the surface of lithium anode to further elevate the capacity of battery. Meanwhile, the short-chain Li 2 S and Li 2 S 2 in the solid electrolyte interphase (SEI) film on the surface of lithium metal can improve SEI’s mechanical properties and the interface compatibility between GPE and lithium metal. The multi-component synergistic effect of GPE provides the battery with superior cycle stability and excellent electrochemical performances. Bio-based GPE will exhibit a promising and alternative way for the practical application of lithium–sulfur batteries.
研究领域:
材料科学
·
电化学
·
储能技术
·
高分子科学
·
纳米技术
✓ 已验证
DOI
高影响因子
e-Journal of Surface Science and Nanotechnology
·
2012
·
IF 0
L. Z. Pei,Y. Q. Pei,Y. K. Xie,Z. Y. Cai
Calcium sulfate and calcium vanadate nanostructures have been synthesized by a hydrothermal route using calcium sulfate and sodium vanadate as the raw materials. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence (PL) spectrum. XRD and SEM observation show that the products are composed of calcium sulfate nanosheets with orhorhombic CaSO4 phase and calcium vanadate nanorods with tetragonal CaV4O9 phase. The size and morphology of the products can be adjusted by controlling the hydrothermal conditions and raw materials. The size of calcium sulfate nanosheets and calcium vanadate nanorods increases obviously with increasing the hydrothermal temperature and reaction time. The formation process of the calcium sulfate and calcium vanadate nanostructures is also discussed. [DOI: 10.1380/ejssnt.2012.585]
研究领域:
无机化学
·
材料科学
·
纳米技术
·
固体化学
·
功能材料
✓ 已验证
DOI
CRYSTENGCOMM
·
2023
·Vol. 25
·期 19
·2939-2945
·
IF 3.1
Jingdong Yan,Dongdong Chu,Fangfang Zhang,Zhihua Yang,Shilie Pan,Xueling Hou
By the introduction of trivalent rare-earth metal-centered polyhedra [LnO6F4] (Ln = La, Gd) into alkali metal sulfates, two novel sulfate fluorides, NaLn2(SO4)2F3 (Ln = La, Gd), were successfully synthesized via a high-temperature solution method in sealed quartz tubes. The two compounds are isomorphic and feature a structure composed of [LnO6F4] (Ln = La, Gd) polyhedra, [NaO4F3] polyhedra, and [SO4] groups. The UV-vis-NIR diffuse reflection spectra, infrared spectra, and thermal stability are also presented. Meanwhile, theoretical calculations reveal that NaLa2(SO4)2F3 has a moderate birefringence (0.041 at 1064 nm) which is significantly improved compared with Na2SO4. And the enhancement of birefringence can be ascribed to the introduction of rare-earth metal-centered polyhedra by a real space atom-cutting method. This work shows that the introduction of trivalent rare-earth metal-centered polyhedra is one of the effective strategies for bolstering the birefringence performance of non-π-conjugated sulfate systems.
研究领域:
材料科学
·
光学材料
·
无机化学
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2016
·
IF 1.207
Jie Wang,Wenqi Zhong
Experiments on simultaneous absorption of SO 2 and NO X from sintering flue gas via a composite absorbent NaClO 2 /NaClO were carried out. The effects of various operating parameters such as NaClO 2 concentration ( m s ), NaClO concentration ( m p ), molar ratio of NaClO 2 /NaClO ( M ), solution temperature ( T R ), initial solution pH, gas flow ( V g ) and inlet concentration of SO 2 ( C S ) and NO ( C N ) on the removal efficiencies of SO 2 and NO were discussed. The optimal experimental conditions were determined to be initial solution pH = 6, T R = 55 °C and M = 1.3 under which the average efficiencies of desulfurization and denitrification could reach 99.7% and 90.8%, respectively. Moreover, according to the analysis of reaction products, it was found that adding NaClO to NaClO 2 aqueous solution is favorable for the generation of ClO 2 and Cl 2 which have significant effect on desulfurization and denitrification. Finally, engineering experiments were performed and obtained good results demonstrating that this method is practicable and promising.
研究领域:
环境工程
·
化学工程
·
能源技术
·
污染控制
·
工业生态学
✓ 已验证
DOI
高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2022
·Vol. 85
·期 6
·1813-1823
·
IF 2.43
Zhong Dan,He Fu,Ma Wencheng,Wu Yichuan,Dong Jiaju
In this study, we investigated using the main composition of pipe deposits from water distribution networks as catalyst to activate dual-oxidant H 2 O 2 /Na 2 S 2 O 8 system to produce radicals for perchloroethylene and chloramphenicol removal. According to the results, the degradation efficiency of perchloroethylene by H 2 O 2 /Na 2 S 2 O 8 system was 92.05% within 8 h. Due to the slow conversion between ≡Fe 3+ and ≡Fe 2+ , the hydroxylamine was introduced to reduce reaction time. As for the results, the degradation efficiency of chloramphenicol in the H 2 O 2 /Na 2 S 2 O 8 system with hydroxylamine assistance was 73.31% within 100 min. Meanwhile, several key affecting factors and the kinetic models were investigated. The primary radicals were identified by electron paramagnetic resonance and radical scavenging tests. Eleven degradation products were confirmed by high-resolution liquid chromatography-mass spectrometry. The result of this study provided the theoretical basis for resource utilization of pipe deposits in water treatment in case of emerging contamination events.
研究领域:
环境科学
·
水处理
·
材料化学
✓ 已验证
DOI
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Jian-jun Lian,Meng Wu,Hong-yan Wu,Yan-ting Liu,Qing Xu,Man-jun Miao,Jian-hua Yang,Ke-ke Mao,Bo Chen,Feng Xue,Qiao-ping Kong,Ming-hao Shang,Xiu-ling Li
The significant increase in demand for molybdenum (Mo) resources has led to excessive molybdate (Mo(VI)) content in water, posing a challenge to the innovation of Mo(VI) removal technology in water bodies. Nanoscale iron sulfide (FeS) has an important effect on the environmental behavior of Mo(VI) in aquatic solutions. To address the issue of easy agglomeration and poor stability of FeS, zirconia sol-modified nanoscale iron sulfide (Zr-FeS) was synthesized, and the adsorption behavior of Zr-FeS on Mo(VI) from diverse aquatic solutions was also investigated in this study. The results showed that the removal rate of Mo(VI) was increased from 28.60% to 78.32% within pH value of 7.0 when Zr/Fe molar ratio was elevated from 0 to 0.5. Moreover, the Mo(VI) adsorption efficiency by Zr-FeS was closely related to pH values, and acid conditions were beneficial for Mo(VI) adsorption. The pseudo-second-order model demonstrated a better fit to the data compared to other models. The maximum adsorption capacity of Zr-FeS towards Mo(VI) value calculated by Langmuir isotherm model was 118.48 mg/g at 298 K. The thermodynamic analysis revealed that the adsorption process of Mo(VI) was endothermic, entropically favorable, and spontaneous in nature. Competing anions (e.g., PO 4 3– , HCO 3 – , and SO 4 2– ) partially inhibited the adsorption process of Mo(VI) by Zr-FeS. While the process was less affected by dissolved oxygen and aging. The results of Fourier-transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and density functional theory (DFT) calculations revealed that the main mechanisms for Mo(VI) removal were hydrogen bonding, electrostatic interaction and surface complexation. The high stability and fast adsorption rate indicated that Zr-FeS was a promising material to remove Mo(VI) from the aquatic solutions.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
Chemical & Biomedical Imaging
·
2024
·
IF 0
Li Zhao,Tianjian Sha,Yufu Liu,Qingsong Mei,Haibin Li,Pinghua Sun,Haibo Zhou,Huaihong Cai
The large-scale preparation of fluorescent nanomaterials with laboratory-relevant chemical and optical properties will greatly forward their consumer market applications; however, it still remains challenging. In this work, a universal strategy was developed for the rapid and large-scale synthesis of fluorescent sulfur quantum dots that recently has drawn great attention because of their unique optical characteristics. From the fact that empty 3d orbitals of sulfide species are able to bind with lone-pair π electrons of the heteroatomic groups, many amino-group containing compounds, such as amino acid and polyethylenimine molecules, were exploited to synthesize sulfur quantum dots. This 10 min preparation period endowed sulfur quantum dots with bright blue fluorescence and also chirality. Due to the user-friendly and rapid operation, this strategy can be extended to the large-scale synthesis of sulfur quantum dots with a yield of 16.844 g for one batch of experiment. Moreover, it was found that the sulfur quantum dots exhibited a reversible temperature-dependent luminescent property with a sensitivity of 0.72%/°C, which showed excellent intracellular temperature monitoring capability for inflammation-related disease diagnostics.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
✓ 已验证
DOI
Energy Material Advances
·
2024
·
IF 14.8
Yanbing Han,Jiao Fang,Han Zhang,Yiyang Sun,Yifang Yuan,Xu Chen,Mochen Jia,Xinjian Li,Han Gao,Zhifeng Shi
Chalcogenide perovskites represent a promising class of materials known for their robust stability, environmentally friendly composition, and intriguing optoelectronic characteristics. Their A-site cation is largely dependent on nonmagnetic Ca, Sr, Ba elements, showing little influences on the optoelectronic properties of chalcogenide perovskites. Here, by introducing magnetic element Eu as A-site cation, we present a comprehensive investigation into the crystal structures, band characteristics, optoelectronic features, and magnetic behaviors of EuHfS3, targeting for photovoltaics. EuHfS3 adopts a distorted perovskite structure within the Pnma space group. This structure allows for various magnetic configurations, setting foundations for multiple photovoltaic effect. The conduction band maximum primarily originates from the Hf 5d orbitals, akin to SrHfS3. Intriguingly, the presence of Eu spin-up 4f orbitals lifts the covalence band minimum, consequently narrowing the band gap of EuHfS3 (1.6 eV), which is suitable for absorber layer in p-i-n junction solar cells. Moreover, zero field cooled magnetization measurements reveal antiferromagnetic behavior in EuHfS3, indicating further spin photovoltaic effect. The integration of magnetic properties into chalcogenide perovskites, in conjunction with their inherent semiconducting attributes, holds promise for future advancements in photovoltaics and other spintronic device technologies.
研究领域:
材料科学
·
光电子学
·
磁学
✓ 已验证
DOI
高影响因子
EARTH AND PLANETARY SCIENCE LETTERS
·
2021
·
IF 5.255
Ye Wan,Xiaolin Wang,I-Ming Chou,Xiaochun Li
Sulfate is a common and important component in the mineralizing fluids of some world-class rare earth element (REE) deposits. However, the roles of sulfate during the transport and mineralization of REEs remain unclear and need further investigation. In this study, liquid–liquid immiscibility is proposed to be a potential mechanism for the enrichment of REE in hydrothermal fluids based on a series of experiments. REEs were considerably concentrated into the separated dense liquid phase, whereas the remaining light liquid phase was depleted in REEs. In situ Raman spectroscopic analyses characterized more complicated REE 3+ -SO 4 2 − complexes and some bisulfate species in addition to the documented REESO 4 + and REE(SO 4 ) 2 − ; the newly proposed sulfate species can transport one third of the total REEs at >200 °C. Therefore, the transport capacity of sulfate was underestimated in previous studies. Overall, the presence of sulfate can significantly fertilize the REE-mineralizing fluids.
研究领域:
地质学
·
地球化学
✓ 已验证
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2024
·Vol. 38
·期 9
·e7610
·
IF 3.7
Zhuang-Zhuang Li,Jia-Qi Wu,Li-Li Xue,Zhao-Qi Dong,Si-Wen Li,Wei Wang,Rong-Xi Li,Jian-She Zhao
The Keggin-type P-Mo-W polyoxometalate-based ionic liquids ([VimAm]Br-POM, POM is PMo 6 W 6 O 40 ) were facilely supported on the green fiber (CA) to obtain a kind of bar-shaped catalyst. The [VimAm]Br-POM@CA showed an outstanding oxidative desulfurization performance for model oil and real oils with H 2 O 2 as oxidant, mainly due to the dual role of the [VimAm]Br-POM with the high activity and its excellent dispersion on CA. The dibenzothiophene (DBT) in model oil could be almost completely removed with [VimAm]Br-POM@CA-2 in 60 min at 60 °C without adding other extractants, in which [VimAm]Br acts as this role. Meanwhile, the influences of reaction temperature, molar ratio of H 2 O 2 /S, catalyst dosage, and different sulfur-containing compounds were also investigated. Interestingly, the pretty low activation energy (0.1875 kJ/mol) has been achieved, and no significant loss of activity even after being reused for 5 cycles. The combination of IL-POM and CA is an efficient strategy to obtain a newly kind desulfurization catalyst, with remarkable results on catalytic efficiency and reuse ability at the same time.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Chunlei Wang,Chunyu Zhao,Xiangjun Pu,Yubin Zeng,Yingjin Wei,Yuliang Cao,Zhongxue Chen
Aqueous zinc-ion batteries (ZIBs) are competitive among the elective candidates for electrochemical energy storage systems, but the intrinsic drawbacks of zinc metal anodes such as dendrites and corrosion severely hinder their large-scale application. Developing alternative anode materials capable of high reversibility and stability for storing Zn2+ ions is a feasible approach to circumvent the challenge. Herein, a sulfur-defect-induced TiS1.94 (D-TiS1.94) as a promising intercalation anode material for ZIBs is designed. The abundant Zn2+-storage active sites and lower Zn2+ migration barrier induced by sulfur defects endow D-TiS1.94 with a high capacity for Zn2+-storage (219.1 mA h g–1 at 0.05 A g–1) and outstanding rate capability (107.3 mA h g–1 at 5 A g–1). In addition, a slight volume change of 8.1% is identified upon Zn2+ storage, which favors a prolonged cycling life (50.3% capacity remaining in 1500 cycles). More significantly, the D-TiS1.94||ZnxMnO2 full battery demonstrates a high discharge capacity of 155.7 mA h g–1 with a capacity retention of 59.8% in 400 cycles. It has been estimated that the high-capacity, low-operation voltage, and long-life D-TiS1.94 can be a promising component of the ZIB anode material family, and the strategy proposed in this work will provide guidance to the defect engineering of high-performance electrode materials toward energy storage applications.
研究领域:
材料科学
·
电化学能存储
✓ 已验证
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2021
·Vol. 168
·期 10
·100528
·
IF 4.316
Zhanwei Xu,Hao Yan,Kai Yao,Kang Li,Jiayin Li,Keren Jiang,Zhi Li
Efficient catalysts for the reduction reaction of SOCl2 are desired for lithium/thionyl chloride batteries with high and stable voltage. In this work, iron phthalocyanine particulates fixed on activated carbon substrates (FePc/AC) are synthesized by an in situ solid approach under the temperatures lower than 300 °C. U–T curves, the value distance to the average U, dU/dT via mathematical differentiation and numerical analysis were employed to investigate to the catalytic reduction of SOCl2 systematically. The U–T curve of the battery containing the FePc/AC displays almost perfect rectangle profile. The average voltage of the battery contains the FePc/AC is 3.00 V, 0.21 V higher than that without the catalysts. After discharge, the surface of the carbon cathode containing FePc/AC displays a well-constructed loose morphology composed of LiCl nanoparticles around 100 nm in diameter. The inside of carbon cathode shows a dense morphology with a mount of nano holes around 50 nm, indicating that the formed LiCl permeates into the interior of the carbon cathode, attributing to that the FePc/AC nanocomposite catalysts facilitate the reduction of SOCl2, leading the formation loose LiCl film in nano scale for electrolyte SOCl2 and the formed LiCl diffusion.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）