NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 12
·5223-5231
·
IF 2.7
Tingli Ren,Yuanfeng Liu,Xiaoqiu Lin,Congju Li
The fairly low power density, mainly resulting from poor electroactive bacterial (EAB) adhesion and the sluggish extracellular electron transfer (EET) at the anode interface, constrains the practical implementation of microbial fuel cells (MFCs). Therefore, the properties of the anode material are considered to be a crucial factor for the long-term operational performance of MFCs. In order to enhance the power production performance of MFCs, an aerogel composed of Fe, N, and S co-doped carbon nanofibers (CNFs) and reduced graphene oxide (rGO) was employed as a high-performance anode material by electrospinning, high-temperature pyrolysis and freeze-drying. The doping of Fe, N and S elements induced the formation of abundant reactive sites on the CNFs, which enhanced the electrochemical performance of the anode and the EET process. The huge electroactive area of the samples facilitated the formation of dense biofilms. Therefore, an MFC with the FeS/Fe3C@NCNFs/rGO-modified anode achieved a maximum power density of 2792.56 mW m−2 and the highest output voltage of 0.658 V, both of which were significantly higher than those of the carbon cloth anode (773.97 mW m−2 and 0.443 V). Considering the great improvement in power production, it has considerable potential as a low-cost but high-performance anode material for MFCs.
研究领域:
材料科学
·
环境工程
·
电化学
·
生物技术
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JOURNAL OF CHEMICAL THERMODYNAMICS
·
2021
·
IF 3.178
Yuqi Su,Taotao Zhan,Xiangyang Liu,Maogang He,Ying Zhang
The mutual diffusion coefficients of (isooctane + n-heptane) and (n-decane + n-heptane) binary solutions were measured over the mass fraction from 0.05 to 0.95 at the pressure of 0.101 MPa, and at temperatures T = 288.15 K, 298.15 K, 308.15 K and 318.15 K, respectively. The expanded relative uncertainty of the digital holographic interferometry employed in this measurement was estimated to be 2.6% with the confidence level of 0.95 ( k = 2). The influences of temperature and composition on the mutual diffusion coefficients were discussed. Moreover, the semi-empirical correlations of mutual diffusion coefficients for (isooctane + n-heptane) and (n-decane + n-heptane) binary mixtures were given by fitting the experimental results as a function of temperature and mass fraction. The absolute average of relative deviations of the correlations are 0.72% for (isooctane + n-heptane) and 0.54% for (n-decane + n-heptane), respectively.
研究领域:
化学
·
物理化学
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ACS Applied Nano Materials
·
2020
·
IF 0
He Tian,Xiancheng Meng,Juehan Yang,Chao Fan,Shuo Yuan,Xia An,Chun Sun,Yonghui Zhang,Mengjun Wang,Hongxing Zheng,Zhongming Wei,Erping Li
Two-dimensional (2D) nanomaterials have been attracting intensive interest due to their unique physical and optoelectronic properties. Van der Waals nanolayered heterostructures based on different 2D nanomaterials provide a state-of-the-art platform for investigating the physical phenomena and have extended the applications of 2D nanomaterials, leading to an era of next-generation high-performance electronic and optoelectronic technology. Herein, vertical 2D SnS/SnS2 p–n and SnSe2/SnS2 n–n nanolayered heterostructures are constructed by exfoliating individual materials and stacking them artificially. The two types of back-gate field-effect phototransistors show clear rectifying behaviors with the existence of band offset and excellent optoelectronic performances. The SnS/SnS2 p–n nanolayered heterostructure shows an ambipolar behavior with a hole mobility of 6.96 cm2·V–1·s–1 and electron mobility of 0.68 cm2·V–1·s–1, while the SnSe2/SnS2 n–n nanolayered heterostructure shows an intense n-type behavior with electron mobility of 3.78 cm2·V–1·s–1 and a high on/off ratio of over 105. Interestingly, due to the band alignments and built-in potentials in the two types of nanolayered heterostructures, the phototransistors exhibit enhanced responsive performances to illuminations of three-primary-color lasers (λ = 405, 532, and 650 nm) compared to the individual components. The SnS/SnS2 phototransistor shows a high photoresponsivity of 3567 A W–1, a high detectivity of 3.64 × 1013 Jones, and a fast response time of 0.8 ms. The SnSe2/SnS2 phototransistor also exhibits a high photoresponsivity of 1793 A W–1 and a fast response time of 15.4 ms.
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产品关联
DOI
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2021
·
IF 3.178
Xiong Zheng,Yanqiong Bao,Dan Qu,Jing Wu,Guangzhao Qin,Yu Liu
With the key role of long-chain hydrocarbons in the wide applications in numerous industrial areas, such as working fluids, phase change materials, fuels, etc ., the knowledge of the thermal conductivity of hydrocarbons is essential in the energy conversion process. Thus, it is of great significance to get reliable experimental data of hydrocarbons’ thermal conductivity for further accurately theoretical predictions and the potential applications. In this work, the thermal conductivities of two long-chain hydrocarbons of n-dodecane and n-tetradecane, are investigated experimentally. The transient hot-wire method was used for the measurement of the thermal conductivity under the conditions of 293–523 K and 0.1–15.0 MPa. By comparing the present work with literature results, the possible reasons for the deviations were analyzed. The results in this study provide accurately measured of the thermal conductivity of the two long-chain hydrocarbons at high temperature and pressure, which are expected to fill the gap in literature.
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ENERGY & FUELS
·
2017
·
IF 3.091
Jun Cheng,Yannan Li,Leiqing Hu,Jianzhong Liu,Junhu Zhou,Kefa Cen
A phase-change solvent for CO2 absorption was prepared by mixing N-methyl-1,3-diaminopropane (MAPA) and N,N-dimethylformamide (DMF). In this MAPA/DMF solvent, MAPA-carbamate precipitate was formed after CO2 absorption to facilitate reducing energy consumption of amine regeneration. The CO2 uptake of MAPA/DMF solvent (14.8 mg/g solvent) was increased by 22% compared with that of MAPA/water solvent (12.1 mg/g solvent). For MAPA/DMF solvent, time was reduced by 22% to reach the CO2 absorption equilibrium. The maximum CO2 uptake rate of MAPA/DMF solvent was 30% higher than that of MAPA/water solvent because DMF displayed higher CO2 solubility and lower MAPA-carbamate solubility than water. Differential scanning calorimetry and thermogravimetry experiments revealed that MAPA(H+)2 and MAPA(CO2–)2 compositions in MAPA-carbamate precipitate first decomposed (peak temperature = 59.9 °C). Subsequently, the MAPACO2 compositions in precipitate also decomposed (peak temperature = 124.2 °C).
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yunpeng Zha,Xiaoxiao Sun,Zhengjun Xiong,Dandan Dong,Shili Li,Qinqin Wang,Minmin Liu
The porous carbon materials co-coordinated with Fe and N (Fe-N-C) were successfully synthesized through one-step pyrolysis with the zeolitic imidazolate framework (ZIF-8) as the precursor. Through systematic optimization of iron ion concentration during synthesis, the Fe-N-C-20 specimen exhibited optimal adsorption performance toward dibenzothiophene (DBT), demonstrating a maximum sulfur adsorption capacity of 22.14 mg S/g with a corresponding removal efficiency of 92 %. This superior performance can be primarily ascribed to the formation of Fe-S bonds anchored on Fe-N active sites, N-S interactions mediated by graphitic nitrogen species and appropriate pore size that allows access to thiophenic compounds. Furthermore, the experimental adsorption isotherms for DBT exhibited strong correlation with the Density Functional Theory (DFT) calculation. Additionally, the material's adsorption process followed pseudo-second-order kinetics and Langmuir isotherms of Fe-N-C, and the pseudo-second-order model shows the smallest RMSE (0.66), extremely low SSE (3.03) and AIC (-1.86), which further proves its excellent fitting ability. And the best balance between parameter efficiency and fitting performance. The high stability and recyclability of ZIF-derived Fe-N-C porous adsorbents contribute to sustainable industrial practices.
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BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
·
2022
·
IF 3.322
Wei Liu,Zhen Lu,Shan Yuan,Xinglin Jiang,Mo Xian
N–N bonded compounds are a relatively small but valuable group of natural products with a variety of important biological activities, including anti-inflammatory, anti-tumor, anti-bacterial and anti-oxidant activities. Currently, the synthesis of natural products containing N–N bonds is mainly based on chemical synthesis, but the chemical synthesis of N–N bonds may have safety issues and raw material sustainability problems. A variety of N–N bond biosynthetic mechanisms exist in nature, including comproportionation, rearrangement, and radical recombination reactions, which provide ideas for the biosynthesis of many N–N bond compounds. But at this stage, only a few N–N bond synthases have been reported, and difficulties exist in the biosynthesis of N–N bond-containing compounds. The new N–N-bond synthase PAI2, which was found to catalyze the synthesis of piperazinic acid, expands the family of N–N-bond synthases and provides better catalytic activity and different enzymatic properties for the substrate L-N 5 -hydroxyornithine than the known enzyme KtzT derived from the piperazinic acid biosynthetic gene cluster of Kutzneria sp. 744. Moreover, PAI2 was found to have the ability to catalyze the formation of C–N bonds in Pro .
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DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2021
·
IF 7.267
Jinming Zeng,Yongxiang Wang,Karthikeyan Rajan,Zongliang Xiao,Rizwan Ur Rehman Sagar,Ping Liu
N,N,N′,N′-tetraphenylbenzidine (TPB) and N,N,N′,N′-tetra(p-tolyl)benzidine (TPB-4Me), were synthesized. Their optoelectrochemical and electrochromic properties were discussed. Both TPB and TPB-4Me exhibited a reversible color change between colorless and dark-green under applied bias voltages . Furthermore, TPB or TPB-4Me and ethyl viologen (EV) or tungsten trioxide (WO 3 ) were used as anode and cathode electrochromic materials, respectively; a series of color complementary ambipolar gel electrochromic devices (ECDs), ECD-3, ECD-4, ECD-5, and ECD-6, were fabricated and investigated. All of ambipolar ECDs displayed reversible color changes between transparent and black under different voltages. In addition, they exhibited high optical contrast in both visible and near-infrared regions; their corresponding optical contrasts were 74.6%, 87.9%, 78.2%, and 78.5% at 750 nm, respectively. In comparison, ECDs based on WO 3 exhibited higher optical contrast (in near-infrared region) and shorter bleaching time than ECDs based on EV. The optical contrasts of ECD-5 and ECD-6 based on WO 3 were greater than 57.6% and 54.0% in the wavelength range of 420–1000 nm, respectively. Their corresponding coloring/bleaching times were found to be 6.6 s/21.7 s and 6.0 s/24.6 s, respectively. The transparent-to-black attributes of these ambipolar ECDs are promising for electrochromic smart windows .
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BIOLOGICAL & PHARMACEUTICAL BULLETIN
·
2026
·Vol. 49
·期 3
·525-537
·
IF 1.8
Tingting Zhang,Sirui Mo,Hongcheng Luo,Guangbin Ye,Qing Qin,Minli Jiang,Yingkai Wang,Jingjing Bi,Zhengmian Zhang,Zhongquan Qi
Multiple sclerosis is a chronic inflammatory disease characterized by demyelination in the central nervous system (CNS). The existing drugs for multiple sclerosis treatment carry significant side effects. The aim of this study was to investigate the safety and effect of a new compound N, N′-dicyclohexyl-N-linoleic acylurea (DCLAA) on experimental autoimmune encephalomyelitis (EAE), the principal multiple sclerosis animal model. Results showed that DCLAA had low toxicity, and DCLAA significantly inhibited the EAE progression and reduced the dosage requirements of methylprednisolone. After DCLAA treatment, the activation of microglia and astrocytes in the CNS was reduced. The expression of proinflammatory cytokines decreased, whereas the expression of anti-inflammatory cytokines increased. DCLAA reduced the number of peripheral T cells and CNS infiltration in EAE mice. Moreover, DCLAA attenuated the proliferation and induced the apoptosis of myelin oligodendrocyte glycoprotein (MOG)-specific T cells. These results indicate that DCLAA exhibit low toxicity and is able to alleviate the clinical symptoms of EAE by reducing neuroinflammation and suppressing the survival of peripheral T cells.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 30
·期 2
·1699-1705
·
IF 2.324
Teng Fei,Chen Dong,Ma Yuzhe,Ji Shaohua,Liu Jiaojiao,Wang Tianhua,Tang Jie,Cao Lifeng,Teng Bing
N,N -dimethylamino-4′-N′-methylstilbazolium 2,4,6-trimethylbenzenesulfonate (DSTMS)-graphene ex-situ and in-situ composite films with 2% concentration of graphene were first prepared and systematically investigated. The crystallinity of DSTMS-based composite films were confirmed by XRD analysis, and the functional groups of composite films can be obtained by FT-IR. Optical absorptions were recorded using UV–Vis-NIR spectral analysis, and the band gap and extinction coefficient of the films were calculated. The thermal stability of the composite films were analyzed by TG/DSC. The pressure sensitive resistance test showed that the pressure sensitive signal of the composite films were significantly increased after graphene added, while the signal of DSTMS film eventually disappears. This work expands the application of organic nonlinear crystal DSTMS in optics and electricity by doping graphene.
研究领域:
材料科学
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凝聚态物理
·
功能材料
·
非线性光学
·
纳米复合材料
·
电学性能
·
光学性能
·
热分析
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TOXICOLOGY AND APPLIED PHARMACOLOGY
·
2022
·
IF 4.46
Suizhi Cheng,Li Che,Qingqing Yang,Rongjing Sun,Yuhong Nie,Haoyue Shi,Yiwen Ding,Li Wang,Zuo Du,Zhenzhong Liu
N -methyl- N′ -nitro- N -nitrosoguanidine (MNNG) is a common alkylating agent , which can be experimentally used as a chemical mutagen and carcinogen, extensively existing in the environment. Folic acid (FA), part of the B group of vitamins, plays an important role in defending against inflammation and reducing the risk of cancers. Nevertheless, there is little research on the protective effects of FA against MNNG-induced esophageal inflammation, and its underlying mechanism still remains elusive. Hence, in the present study, we exposed MNNG to SD rats and esophageal cells to establish the esophageal inflammation models. Our research aims to explore the protective roles of FA against esophageal inflammation induced by MNNG via NF-κB pathway by CCK-8, EdU, RT-qPCR, ELISA , H&E, Western blot . Our results revealed that MNNG decreased the viability of esophageal cells, which was restored under FA intervention. Besides, FA relieved the elevation of IL-6, IL-8 and TNF-α in MNNG-induced esophageal inflammation. Moreover, histopathological analysis showed that epithelial spinous cells proliferated in mucous layer, and inflammatory cells were locally infiltrated in the submucosa after MNNG exposure, while the pathological damage of esophageal tissues was gradually alleviated along with increasing FA doses. And Western blot results demonstrated that FA could relieve the rise of phosphorylated IκBα (p-IκBα) and phosphorylated p65 (p-p65) proteins induced by MNNG. Therefore, it is reasonable to believe that FA has a crucial role in preventing MNNG-induced esophageal inflammation through inhibiting the NF-κB pathway, thereby down-regulating the expressions of IL-6, IL-8 and TNF-α.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Linlu Shen,Zhonglin Chen,Jing Kang,Pengwei Yan,Jimin Shen,Binyuan Wang,Shengxin Zhao,Lanbo Bi,Shuyu Wang,Yizhen Cheng
This study found that peroxymonosulfate (PMS) oxidation without activation has the potential to generate a suspected human carcinogen, N-nitrosodimethylamine (NDMA), in water containing N,N-dimethylhydrazine compounds. Considerable amounts of NDMA formed from three compounds by PMS oxidation were observed. 1,1,1′,1′-Tetramethyl-4,4′-(methylene-di-p-phenylene) disemicarbazide (TMDS), which is an industrial antiyellowing agent and light stabilizer, was used as a representative to elucidate the kinetics, transformation products , mechanism and NDMA formation pathways of PMS oxidation. TMDS degradation and NDMA formation involved direct PMS oxidation and singlet oxygen ( 1 O 2 ) oxidation. The oxidation by PMS/ 1 O 2 was pH-dependent, which was related to the pH-dependent characteristics of the reactive oxygen species and intermediates. The degradation mechanism of TMDS mainly included the side chain cleavage, dealkylation, and O-addition. NDMA was generated from TMDS mainly via O-addition and 1,1-dimethylhydrazine (UDMH) generation. The cleavage of amide nitrogen in O-addition products and primary amine nitrogen in UDMH are likely the key steps in NDMA generation. The results emphasized that the formation of harmful by-products should be taken into account when assessing the feasibility of PMS oxidation.
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