ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Yuqing Tian,Wei Wei,Zhouquan Sun,Yunhao Hu,Kerui Li,Qinghong Zhang,Yaogang Li,Chengyi Hou,Hongzhi Wang
Using body heat as a sustainable energy source through the thermoelectric effect to power wearable electronics is promising. Ionic thermoelectric materials based on the thermogalvanic effect can generate stable voltage under low-temperature differences, but their low thermopower and poor contact interface with electrodes hinder practical use. In this study, strong chaotropic salts are utilized to modify the solvation shells of ions, increasing the thermopower of the p-type redox couple [Fe(CN)₆] 3 ⁻/[Fe(CN)₆]⁴⁻ to 3.98 mV K −1 . Additionally, Arrhenius acid is introduced to inhibit the deprotonation of the n-type redox couple Fe 3 ⁺/Fe 2 ⁺, enhancing the thermopower to −2.29 mV K −1 . Liquid metal electrodes, with excellent deformability and hydrogen bonding with hydrogel surfaces, effectively reduce the resistance of thermocells. Thus, a pair of p-n thermocells achieve a voltage output of 118 mV and a current density of 4.5 A m − 2 , with a maximum power density of 0.11 W m − 2 (Δ T = 5 K). A wearable device integrated with 18 p-n pairs can generate a voltage of 2.2 V from body heat and continuously power portable electronic devices. This work demonstrates the promising potential of wearable self-powered devices for practical daily applications.
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Journal of Energy Storage
·
2024
·
IF 8.9
Hamouda Adam Hamouda,Leila Mahmoud Mokhtar,Badr Ahmed Mahmoud,Inaam A. Salim,Asha Fadalla Wady,Ali Abdellahi Eltayeib,Hui Peng,Guofu Ma,Ziqiang Lei
Herein, the novel Mn-Co-P nano-spheres and acacia wood-derived activated carbon (ACWC) as positive and negative electrodes, respectively, were used to develop an ultra-stable asymmetric supercapacitor. The Mn-Co-P nano sphere was synthesized by a hydrothermal method to give distinct characterization morphology and electrochemical performance. Detail with regard to its physical and chemical properties of the active material coated on the nickel substrate are studied by X-ray diffraction, field-emission scanning electron microscopy, field-emission transmission electron microscopy, high-resolution X-ray photoelectron spectroscopy analyses, thermogravimetric analysis (TGA), and N 2 adsorption-desorption isotherms. The electrochemical properties of the prepared materials were tested in electrolyte by cyclic voltammetry (CV), galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy (EIS). Results show that the Mn-Co-P electrode has a high specific capacity of 119.34 mAh g −1 at 0.5 A g −1 current density. The ACWC active carbon was prepared from acacia wood to give a high surface area of 1210 m 2 g −1 , with a high specific capacitance of 225 F g −1 at 0.5 A g −1 . Asymmetric supercapacitor devices based on the electrodes exhibit a high energy density of 36.2 Wh kg −1 at 850.00 W kg −1 . In addition, outstanding cycling number stability of 93.3 % capacitance retention over 10,000 cycles was achieved using sodium sulphate (0.5 M) as an electrolyte.
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CARBON
·
2024
·
IF 10.5
Guangkai Jin,Yuhong Cui,Kaige Yan,Shenghua Xue,Shujuan Liu,Qian Ye,Feng Zhou,Weimin Liu
To address energy wastage caused by friction, it is urgently needed to develop multi-functionalized nano-additives based on traditional lubricant additives. Herein, nitrogen/phosphorus co-doped carbon dots (N,P-CDs) are successfully prepared via one step hydrothermal method using benzopyrrole as raw materials and diethylenetriaminepenta as N, P-dopant. The prepared N,P-CDs demonstrate good lubrication effects when used as water-based additives. Compared with pure H 2 O, the coefficient of friction (COF) significantly decreases from 0.448 to 0.144, accompanied by a notable reduction in wear volume from 3.84 × 10 5 μm 3 to 2.31 × 10 5 μm 3 . This is attributed to the formulation of the robust hydration layer on the CDs surface, as well as the tribochemical protective film generated on the friction pair surface. In addition, the introduction of N,P-CDs effectively inhibits bacterial growth during long-term storage of H 2 O as lubricant. With small additions (100 μg/mL), the anti-bacterial rates against Escherichia coli and Staphylococcus aureus could reach 94.9 % and 99.5 %, respectively.
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CHEMOSPHERE
·
2024
·
IF 8.1
Yan Li,Zongyan Huang,Hui Zhang,Jieyu Zhao,Daolin Du
Plant-microbe remediation technique is considered as a promising technology in removal of organic pollutants and its remediation efficiency is largely affected by a variety of surrounding environmental factors. Humic acid (HA) is the complex organic substance ubiquitous in environment, which characterized by its surfactant-like micelle microstructure and various reaction activity. In our study, a plant-microbe association with high p - tert -Butylphenol (PTBP) degradation potential constructed by Spirodela polyrhiza and Sphingobium phenoxybenzoativorans Tas13 has been used, and the influence of HA on the PTBP degradation efficiency of S. polyrhiza -Tas13 association was investigated. The result showed that the presence of HA greatly improved PTBP removal efficiency of S. polyrhiza -Tas13. The reason accounted for this may be due to the presence of HA promoted bacterial cell propagation, altered bacterial cell wall permeability, increased catechol 2,3-dioxygenase (C23O) enzyme activity of strain Tas13, rather than increasing the colonization ability of strain Tas13 on to the root surface. This study will greatly facilitate the application of aquatic plant-microbe association in environmental remediation.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Wenqian Cao,Yumeng Qi,Ying Zhang,Ruixue Guo,Ruijuan Qu,Zunyao Wang
Photolysis is the main pathway for the degradation of persistent organic pollutants (POPs). Most investigations, however, have been limited to the ultraviolet or visible region, and the reaction mechanism of infrared (IR) light is still unclear. In this study, the photodegradation of o,p' -dichlorodiphenyltrichloroethanes ( o,p' -DDT) on the silica (SiO 2 )/air interface under different irradiation light sources was systematically investigated. Interestingly, for the first time, effective degradation of o,p' -DDT under IR light irradiation was observed, which was ascribed to the anti-Stokes Raman scattering process of SiO 2 . Moreover, desert sands could also serve as a vector for the photodegradation of o,p' -DDT. The lower removal efficiency of desert sands compared to pure SiO 2 was a combined effect of differences in Fe 3+ component and SiO 2 content. It is worth noting that direct photodegradation plays a dominant role in the photodegradation of o,p' -DDT on SiO 2 . Besides, indirect photodegradation resulted mainly from •OH (25.0%), O 2 • − (6.9%), and 1 O 2 (5.6%) generated in the reaction system. In addition to hydroxylation and dechlorination products, the formation of four novel silicon-based products was observed, which resulted from the direct reaction of silyl radicals with o,p' -DDT. This study revealed that the specific Raman scattering effect of SiO 2 played a vital role in the self-purification process of POPs upon SiO 2 -based environmental matrices. The light-mediated decontamination system upon SiO 2 constructed in this study could provide critical information for addressing POPs contamination on sands.
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Advanced Materials Technologies
·
2024
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IF 6.4
Yichao Wang,Mengjuan He,Jingli Tang,Liqian Huang,Xueli Wang,Jianyong Yu
Conductive textiles with electromagnetic interference (EMI) shielding functionality are highly desirable for growing flexibility requirements of EMI shielding devices. Most extant shielding coatings on textiles rely on rigid nanomaterials, which are susceptible to detachment, and generate a great deal of reflected EM waves. Thus, there is a high demand for shielding coatings on textiles that are stretchable, stable, and capable of suppressing the secondary reflection toward incident EM waves. Liquid metal is a particularly suitable candidate owing to its high electrical conductivity and excellent conformality. Herein, a straightforward coating strategy is developed for fast fabrication of Ion/Clay-F that is reinforced with ionogel encapsulation. Especially, the method enables the direct transformation of fluid-like liquid metal into a clay-like state and the preparation of ionogel sealings from monomer solutions. The resulting Ion/Clay-F exhibits promising features, including high total EMI shielding effectiveness (SE T ) (highest value of 49.3 dB for a single layer and an average value of 73.0 dB for three layers), low reflectivity (0.404), improved tensile strength (13.16 MPa) and tolerance in a wide range of temperatures (−18–100 °C). Remarkably, such Ion/Clay-F outperforms pure cotton fabric in terms of thermal management, delivering superior heat dissipation and thermal insulation properties.
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Green Chemical Engineering
·
2024
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IF 9.1
Ruichang Xue,Rongrong Deng,Yan Li,Mengqiu Gao,Jiafu Wang,Qibo Zhang
Developing electrocatalysts with excellent activity, high stability, and low cost is vital for large-scale hydrogen production through electrochemical water splitting. Herein, a bifunctional Ni–Fe–P catalyst in situ grown on Fe foam (Ni–Fe–P/FF) is developed by a simple one-step solvothermal process in the deep eutectic solvent (DES) of ethylene glycol and choline chloride (named Ethaline). The unique solvent environment of Ethaline assisted with the regulating effect of the introduced Fe(III) ions shows an essential role in governing the preparation process. The developed Ni–Fe–P/FF acts as the efficient bifunctional electrocatalyst for water splitting in 1.0 M KOH, requiring overpotentials of 82 mV (229 mV) and 263 mV (370 mV) to deliver 10 mA cm −2 (100 mA cm −2 ) for oxygen and hydrogen evolution reactions, respectively. Furthermore, the self-supported catalyst-assembled electrolyzer also exhibits good catalytic performance with a low voltage of 1.83 V to drive 100 mA cm −2 and good stability over 100 h. This work offers a facile approach to fabricating high-performance bifunctional Ni–Fe–P electrocatalysts to catalyze water splitting.
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PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
·
2024
·Vol. 121
·期 43
·e2407579121
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IF 9.4
Xiaoge Liang,Dian Chen,Aimin Su,Yu Liu
Ribonuclease P (RNase P) plays a vital role in the maturation of tRNA across bacteria, archaea, and eukaryotes. However, how RNase P assembles various components to achieve specific cleavage of precursor tRNA (pre-tRNA) in different organisms remains elusive. In this study, we employed single-molecule fluorescence resonance energy transfer to probe the dynamics of RNase P from E. coli (Escherichia coli) and Mja (Methanocaldococcus jannaschii) during pre-tRNA cleavage by incorporating five Cy3-Cy5 pairs into pre-tRNA and RNase P. Our results revealed significant differences in the assembly and catalytic mechanisms of RNase P between E. coli and Mja at both the RNA and protein levels. Specifically, the RNA of E. coli RNase P (EcoRPR) can adopt an active conformation that is capable of binding and cleaving pre-tRNA with high specificity independently. The addition of the protein component of E. coli RNase P (RnpA) enhances and accelerates pre-tRNA cleavage efficiency by increasing and stabilizing the active conformation. In contrast, Mja RPR is unable to form the catalytically active conformation on its own, and at least four proteins are required to induce the correct folding of Mja RPR. Mutation experiments suggest that the functional deficiency of Mja RPR arises from the absence of the second structural layer, and proper intermolecular assembly is essential for Mja RNase P to be functional over a broad temperature range. We propose models to illustrate the distinct catalytic patterns and RNA–protein interactions of RNase P in these two organisms.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2024
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IF 4.2
Min Yuan,Ke Huang,Dongqing Dai,Hongfei Yin,Wei Zhao,Yixin Jiang,Yahui Feng
The integration of heterogeneous photocatalysts has emerged as a promising approach to boost the effectiveness of photocatalytic reactions for hydrogen evolution. In this study, we explore the synergistic effects of Ti 3+ -TiO 2 /P-doped g-C 3 N 4 heterojunctions on the enhancement of visible light-induced hydrogen generation efficiency. The photocatalytic hydrogen evolution performance of the as-prepared TPCN100 (280.38 μmol g −1 h −1 ) surpasses that of pristine P-doped g-C 3 N 4 (34.89 μmol g −1 h −1 ) and Ti 3+ -TiO 2 (39.71 μmol g −1 h −1 ) by factors of 8.0 and 7.1 respectively. Through a comprehensive investigation of the structural, electronic, and photocatalytic properties, the underlying mechanisms accountable for the observed enhancement in efficiency within the heterojunction system were elucidated. Based on the in-situ X-ray photoelectron spectrometer (XPS) examination, measurement of band edge, and electron paramagnetic resonance (EPR) analysis, the S-scheme photocatalytic mechanism was proposed. The integration of Ti 3+ -TiO 2 and P-doped g-C 3 N 4 offers new insights into the design of advanced photocatalytic materials for sustainable energy applications.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2011
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IF 2.089
Baimei Yang,Hui Wan,Guofeng Guan
Isobaric binary vapor–liquid equilibrium (VLE) data for 1-butanol + ethylbenzene, or o-, or m-, or p-xylene and isobaric quinary VLE data for 1-butanol + ethylbenzene + o-xylene + m-xylene + p-xylene are measured at 101.33 kPa using a modified Rose cell with circulation of both phases. The four binary systems of 1-butanol + ethylbenzene, or o-, or m-, or p-xylene exhibit minimum boiling azeotropes, and the composition of the azeotropes are reported. The VLE data for the four binary systems are checked to meet rigorous thermodynamic consistency by Herington method and the point-to-point test of the Fredenslund method. The nonideality in vapor phase of the measured binary systems is analyzed through calculating fugacity coefficients. Combined with the Hayden–O'Connell (HOC) equation, the VLE data for 1-butanol + ethylbenzene, or o-, or m-, or p-xylene are well-correlated by the nonrandom two-liquid (NRTL), universal quasichemical activity coefficient (UNIQUAC), and Wilson equations. The NRTL model parameters obtained from correlation are used to predict the VLE data of the quinary system. According to the average absolute deviation values, the obtained quinary predicted values are in good agreement with the experimental values.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2011
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IF 1.77
Xue-Ping Ding,Dong-Bao Tang,Tao Li,Su-Fan Wang,Yun-You Zhou
The characteristics of host–guest complexation between tetrabutyl ether derivatives of p -sulfonatocalix[4]arene (SC4Bu) and methiocarb [3,5-dimethyl-4-(methylthio) phenyl methylcarbamate] were investigated by fluorescence spectrometry. Upon addition of methiocarb, the fluorescence intensity of SC4Bu was quenched regularly and a slight red shift was observed for the maximum emission peak. These results indicated that the SC4Bu-methiocarb complex was formed a 1:1 mole ratio. An association constant of 1.67 × 10 4 L mol −1 was calculated by applying a deduced equation. The interaction mechanism of the inclusion complex was discussed. Based on the results, a novel spectrofluorimetric method was described for the determination of methiocarb with a detection limit at 0.05 μg mL −1 . This method is very simple and shows high sensitivity and selectivity. Moreover, the proposed method was successfully applied to the determination of methiocarb in water samples.
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PubMed
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2009
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IF 2.063
Dongwei Wei,Lishuo Wang,Chao Zhang
Solid−liquid equilibria have been measured for binary mixtures of 1,8-cineole with p-cymene, β-pinene, and camphene, respectively, using differential scanning calorimetry (DSC) over the whole composition concentration range. All three are simple eutectic systems. The eutectic point of the (1,8-cineole (1) + p-cymene (2)) mixture is at 200.0 K and x1 = 0.124, the (1,8-cineole (1) + β-pinene (2)) mixture at 205.6 K and x1 = 0.154, and the (1,8-cineole (1) + camphene (2)) mixture at 251.8 K and x1 = 0.582. An empirical equation of Ott and Goates was used for correlating the experimental data.
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危险品化学品经营许可证（带存储）