ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Liqiao Zhong,Yong Lu,Haixia Li,Zhanliang Tao,Jun Chen
Aqueous rechargeable sodium-ion batteries (ARSIBs) are promising candidates for large-scale energy storage applications due to their high safety, low cost, and environmental friendliness. However, appropriate anode materials with high capacity for ARSIBs are limited, and their cycling stability is generally unsatisfactory. Here we report high-performance ARSIBs with polyacrylamide hydrogel as electrolyte and alloxazine (ALO) encapsulated in CMK-3 as anode. The hydrogel with solid content of 60% could effectively mitigate the dissolution issue of sodiated ALO because its cross-linked structure is helpful to reserve H2O. The ALO/CMK-3 anode based on a two-electron transfer reaction could deliver a high capacity of 160 mA h g–1. The introduction of CMK-3 could improve the electrical conductivity of ALO and further reduce the dissolution of sodiated ALO because of its high conductivity and nanochannel structure. The full ARSIBs exhibit an energy density of 50 W h kg–1 (based on the total mass of active electrode materials) with good capacity retention of 90% after 100 cycles at 2 C and high rate capability of 146 mA h g–1 at 10 C (1 C = 250 mA g–1). This work paves the way to construct high-performance ARSIBs with high-capacity organic anode and hydrogel electrolyte.
研究领域:
能源材料
·
电化学
·
电池技术
✓ 已验证
DOI
高影响因子
PHYSICAL REVIEW B
·
2024
·Vol. 109
·期 21
·214430
·
IF 3.2
Lei Yue,Ziyou Lu,Kun Yan,Le Wang,Shu Guo,Ruixin Guo,Peng Chen,Xiaobin Chen,Jia-Wei Mei
In our study, we conduct magnetization and heat capacity measurements to investigate field-induced magnetic phase transitions within the newly synthesized compound ${\mathrm{K}}_{2}{\mathrm{Ni}}_{2}{({\mathrm{SeO}}_{3})}_{3}$, a spin-1 dimer system arranged on a triangular lattice. From our first-principles simulations, we determine that the spin system in ${\mathrm{K}}_{2}{\mathrm{Ni}}_{2}{({\mathrm{SeO}}_{3})}_{3}$ can be represented as a two-dimensional triangular-lattice spin-1 dimer model, including an intra-dimer exchange of ${J}_{1}=0.32\phantom{\rule{0.16em}{0ex}}\mathrm{meV}$, an inter-dimer exchange of ${J}_{2}=0.79\phantom{\rule{0.16em}{0ex}}\mathrm{meV}$, and an easy-axis anisotropy of $D=0.14\phantom{\rule{0.16em}{0ex}}\mathrm{meV}$. The presence of easy-axis magnetic anisotropy explains the distinct magnetic phase diagrams observed under $c$-axis directional and in-plane magnetic fields. Notably, our investigation unveils a two-step phase transition with the magnetic field aligned with the $c$ direction. Our findings yield valuable insights into the magnetic phase transitions inherent to geometrically frustrated magnetic systems featuring dimer structures.
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2016
·
IF 2.196
Peizhu Zheng,Dongxing Cai,Jihua Zhao,Weiguo Shen
The mixed surfactants of dodecyltrimethylammonium bromide (DTAB) and 1-dodecyl-3-methylimidazolium bromide (C 12 mimBr) in aqueous solutions were studied by measurement of electrical conductivity and isothermal titration microcalorimetry (ITC). The critical micelle concentrations (cmc) and the degree of dissociations of counter ions were determined for this system at various surfactant compositions, and the thermodynamic properties of micellization were evaluated. A one-parameter Margules equation was used to fit the cmc values to calculate the mole fraction, the activity coefficients of two surfactant components and the excess properties in mixed micelles.
研究领域:
胶体化学
·
物理化学
·
表面化学
·
热力学
·
溶液化学
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL SCIENCES
·
2024
·Vol. 136
·期 4
·82
·
IF 1.7
Qin Xiao-Li,Ding Xue-Qing,Li Yu-Qin,Yu Yi-Hao,Xu Fan,Rong Zhou
A method for synthesizing 3-substituted isocoumarins under copper catalysis involves the cyclization reaction of o -bromobenzoic acid and alkynes in DMSO, with the assistance of K 2 CO 3 at 100 °C. It exhibits a wide range of substrate compatibility and excellent tolerance towards diverse functional groups. Graphical abstract A method for synthesizing 3-substituted isocoumarins under copper catalysis involves the cyclization reaction of o-bromobenzoic acid and alkynes in DMSO, with the assistance of K 2 CO 3 at 100 °C. This reaction demonstrates a synthesis yield of 8–81% for 3-substituted isocoumarins.
研究领域:
有机化学
·
有机合成化学
·
催化化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Jie Zhuang,Mingzhu Pan,Yuhui Zhang,Fei Liu,Zhaoyang Xu
Currently, cellulose-based aerogel materials are a hot topic owing to their high specific surface area and high porosity, as well as the green, degradable and biocompatible characteristics of cellulosic materials . Modification of cellulose to enhance the adsorption properties of cellulose-based aerogels has important research significance in solving the problem of water body pollution. In this paper, cellulose nanofibers (CNFs) were modified with polyethyleneimine (PEI), and modified aerogels with directional structures were prepared by a simple reaction and freeze-drying method. The adsorption behavior of the aerogel followed the adsorption kinetic models and isotherm models. More significantly, the aerogel could rapidly adsorb microplastics, reaching equilibrium within 20 min. Furthermore, the fluorescence displayed directly expresses the occurrence of the adsorption behavior of the aerogels. Therefore, the modified cellulose nanofiber aerogels were of reference significance for microplastic removal from water bodies.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Renping Cao,Jingyi Lin,Bang Lan,Fangrui Cheng,Ting Chen,Lan Li,Ru Liu,Jing Wang
Na 3 Sc 2 (PO 4 ) 3 :R (R = Bi 3+ , Sm 3+ , and Sm 3+ /Bi 3+ ) are successfully synthesized in air atmosphere. The high-temperature solid-state reaction method is used in this work. The X-ray diffractometer patterns confirm that all samples have the single pure phase Na 3 Sc 2 (PO 4 ) 3 . Na 3 Sc 2 (PO 4 ) 3 :Bi 3+ displays blue emission because of the Bi 3+ - Sc 3+ metal-to-metal charge-transfer and the 3 P 1 → 1 S 0 transition of Bi 3+ . Na 3 Sc 2 (PO 4 ) 3 :Sm 3+ shows red-orange emission with four emission bands derived from the 4 G 5/2 → 6 H 5/2 (550 - 582 nm), 6 H 7/2 (582–625 nm), 6 H 9/2 (625–675 nm), and 6 H 11/2 (675–750 nm) transitions of Sm 3+ . The optimal Sm 3+ concentration in Na 3 Sc 2 (PO 4 ) 3 :Sm 3+ is ∼8mol%. An adjustable color emission from blue to red-orange of Na 3 Sc 2 (PO 4 ) 3 :Sm 3+ , Bi 3+ with excitation at 345 nm can be observed when the ratio between Sm 3+ and Bi 3+ ions is changed. Na 3 Sc 2 (PO 4 ) 3 :Sm 3+ , Bi 3+ emits red–orange light under excitation 406 nm. The optimal Bi 3+ concentration in Na 3 Sc 2 (PO 4 ) 3 :8mol%Sm 3+ , Bi 3+ is ∼ 6mol%. The energy transfer from Bi 3+ to Sm 3+ in Na 3 Sc 2 (PO 4 ) 3 :Sm 3+ , Bi 3+ is verified by the spectral properties of samples. We discuss the influences of Bi 3+ or Sm 3+ concentration on luminescence properties of samples and analyze their luminous mechanism by energy level diagram. The experimental results of paper are useful for the research of new Bi 3+ and Sm 3+ doped phosphors.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Hanwen Zhang,Liuxue Shen,Xiaodong Geng,Jianxin Zhang,Yue Jiang,Hongting Ma,Quanli Liu,Kai Yang,Junlin Ma,Nan Zhu
Sodium superionic conductor (NASICON) structured polyanionic materials have recently attracted great attention for robust crystal structures. However, inherent properties of NASICON presents poor electrical conductivity and low energy density. Herein, non-stoichiometric synthesized strategy is used for acquiring N 3.5 MTP, effectively suppressing voltage hysteresis. Besides, as-fabricated N 3.5 MTP grains in-situ grow on MXene-rGO aerogels by sol–gel synthesis approach obtaining N 3.5 MTP@MXene-rGO. MXene-rGO aerogel as an excellent conductive matrix can effectively avoid agglomeration of Na 3.5 MnTi(PO 4 ) 3 particles and alleviate volume change of the lattice during sodium ion intercalation/deintercalation. Moreover, cross-linked network of N 3.5 MTP@MXene-rGO provides fast electron transfer and ion transport rates. The above synergistic effect and contribution of pseudocapacitance make it an excellent discharge capacity of 189 mA h g −1 at 50 mA g −1 for N 3.5 MTP@MXene-rGO, long cycles of 5000 cycles, as well as 98 mA g −1 at −30 °C (50 mA g −1 ). Prospectively, this study provides an effective strategy for improving electrochemical performance of NASICON-type cathode for sodium batteries.
✓ 已验证
产品关联
DOI
高影响因子
Toxics
·
2023
·Vol. 11
·期 6
·479
·
IF 4.6
Tao Wei,Na Cao,Tiantian Han,Yi Chen,Xingtao Zhou,Liyang Niu,Wenting Liu,Chang Li
3-monochloropropane-1,2-diol (3-MCPD) is a food-process toxic substance, and its main target organ is the kidney. The present study examined and characterized the nephrotoxicity and the lipidomic mechanisms in a model of kidney injury in Sprague Dawley (SD) rats treated with high (45 mg/kg) and low (30 mg/kg) doses of 3-MCPD. The results showed that the ingestion of 3-MCPD led to a dose-dependent increase in serum creatinine and urea nitrogen levels and histological renal impairment. The oxidative stress indicators (MDA, GSH, T-AOC) in the rat kidney altered in a dose-dependent manner in 3-MCPD groups. The lipidomics analysis revealed that 3-MCPD caused kidney injury by interfering with glycerophospholipid metabolism and sphingolipid metabolism. In addition, 38 lipids were screened as potential biomarkers. This study not only revealed the mechanism of 3-MCPD renal toxicity from the perspective of lipidomics but also provided a new approach to the study of 3-MCPD nephrotoxicity.Keywords:3-MCPD;nephrotoxicity;lipidomics;biomarkers;pathway
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Yufei Zhang,Junhua Yun,Lei Zhou,Guoyang Zhang,Mei Zhao,Hossain M. Zabed,Xianghui Qi
To achieve carbon neutrality and carbon peaking goals, biomanufacturing of high-value chemicals from sustainable biorefinery has emerged as an attractive alternative to traditional petrochemical-based processes. 3-Hydroxypropionic acid (3-HP) is one of the top value-added building-block chemicals with diverse applications, which has increased its demand for large-scale industrial production. Nevertheless, sustainable biosynthesis of 3-HP is limited by the lack of robust strains and the need for expensive fermentation medium components. Herein, efforts were made to overcome these limitations through metabolic engineering of Escherichia coli and process optimization. First, the functional 3-HP biosynthetic pathway was recruited and optimized in E. coli . Next, the endogenous glycerol facilitator (GlpF) was overexpressed to enhance glycerol uptake, and the expression level of aldehyde dehydrogenase (YdcW) was optimized for speeding up 3-HP biosynthesis. Subsequently, global regulator engineering further improved 3-HP production. Additionally, corn steep liquor (CSL) was used to develop a cheap fermentation medium. Finally, co-fermentation of crude glycerol with glucose and acetic acid using the final strain produced 67.62 g/L 3-HP with a yield and a productivity of 0.86 mol/mol glycerol and 1.41 g/L/h, respectively.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Huiru Wang,Jingyi Liu,Sorour Sadeghzade,Runsheng Hou,Hongyan Yuan
Among piezo composites, 0–3 type ceramic/polymer-based composites have balanced properties and flexible manufacturing processes, allowing them to tackle challenges in wearable electronics and sensing technology. However, due to a misfit between the dielectric coefficients of the ceramic particles and polymer matrix , poling 0–3 composites is difficult. Therefore, in this study, we develop a novel poling method that combines the merits of normal corona poling and oil-based poling methods to activate a lead zirconium titanate (PZT)/Polyethylene glycol diacrylate (PEGDA) composite. The influence of various parameters (voltage, temperature, poling duration, and time of ageing) on the piezoelectric and dielectric properties of the PZT/polymer composite were evaluated. For the 0–3 PZT/PEGDA composites (67 wt%), the optimal poling parameters were found to be 60 min poling duration, 25 °C, and 24 kV. The d 33 (32 pC/N) obtained by the proposed poling method is about 3 times that obtained by the normal corona poling method (11 pC/N). This modified poling method was shown to be more effective than the conventional method for a range of filler contents (50 wt%, 67 wt%, and 75 wt%). It was also found that the d 33 value of the PZT/PEGDA composite increased over time and was attributed to the increase of the composite dielectric constant after poling. Finally, sensing elements were assembled from the poled samples and evaluated, which shows the potential for detecting tiny signals in sensing and soft robotics.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2022
·
IF 8.035
Chengrui Wang,Yanhong Fang,Zhenghao Wang,Mujun Long,Dengfu Chen,Huamei Duan,Yandong Li,Guoquan Zhang
Partially oxidizing methane into syngas via a two-step chemical looping scheme was a promising option for methane transformation. Ce 2 (SO 4 ) 3 was selected to explore the performance and mechanism of methane chemical looping partial oxidation (CLPOM) to syngas. Thermodynamic and kinetic analysis forecast the Ce 2 (SO 4 ) 3 as a promising candidate for CLPOM. Compared with literature, Ce 2 (SO 4 ) 3 not only had an outstanding syngas selectivity, but also an appropriate CH 4 conversion and molar ratio, and CH 4 conversion could reach 90.5 % of thermodynamic result. As revealed via characterization, Ce 2 (SO 4 ) 3 (1 0 2) surface had the highest peak intensity and the migration of lattice oxygen played an important role in CLPOM. Some of them were tend to agglomeration and these small particles were less than 5 μm. Density functional theory calculations demonstrated that CH 4 series dehydrogenation products tended to adsorb at O site and CH 3 → CH 2 + H was the rate-determining step. The reaction of surface lattice oxygen atoms and migration of the internal lattice oxygen atoms could inhibit carbon deposition, promote CH 4 conversion and syngas generation in experiment. Compared with NiO, Ce 2 (SO 4 ) 3 had a lower energy barrier of lattice oxygen migration, which could increase the reaction rate.
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Meng Ding,Xixun Shen
A GO/MPTS coating on a Zn coating electrodeposited on carbon steel was prepared by immersing zinc samples into suspension of graphene oxide/(3-mercaptopropyl) methyldimethoxysilane GM and then drying at 80°C. The silanol groups reacted with oxygen-containing functional groups on the GO during the hydrolysis process, and the GO was stacked layer by layer to construct a dense organic coating over the etched zinc surface. The synthesized GM coatings were characterized by FTIR, XRD, Raman spectroscopy and SEM. The corrosion behaviour of the galvanized carbon steel (GCS) and GCS coated with a GM composite coating exposed to a 3.5% NaCl solution were studied by potentiodynamic polarization and EIS. The results confirm that the GM coating can effectively protect GCS. Combined with the physical characterization of the GM-coated GSC explaines its markedly increased corrosion resistance.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）