通讯机构：
[Dai, YM ] C;Changsha Univ Sci & Technol, Sch Chem & Chem Engn, Hunan Prov Key Lab Mat Protect Elect Power & Tranp, Hunan Prov Key Lab Cytochem, Changsha 410114, Peoples R China.
摘要：
Developing a green adsorbent to deal with Congo red dyes from wastewater was a significative exploration. In the work, we prepared an ionic liquid modified magnetic cellulose/sepiolite composite FSCS-cl-p(MBA-co-BVI) via a simple method, the process including the magnetic sepiolite/cellulose complex grafting the polymer of MBA and BVI. The high specific surface area of sepiolite and cellulose, the electropositivity of ionic liquids [Bvim][Br] and magnetic response of Fe3O4@SiO2 nanoparticles jointly promoted the adsorption performance of adsorbents. The composites were characterized by SEM, XRD, EDS, FTIR, BET, TGA and VSM, the adsorption performances were evaluated containing the influence factors, adsorption kinetics, isotherm and thermodynamics. In brief, the adsorbents were suitable within the pH range of 3-9 and reach adsorption equilibrium during 120 min. Meanwhile, the maximum adsorption capacity for CR was up to 1374.10 mg/g at 45 celcius. Furthermore, the adsorption kinetics and isotherm models were well-fitted to pseudo-second-order model and Langmuir isotherm model, respectively. The adsorption mechanisms of FSCS-cl-p(MBA-co-BVI) for CR could be interpreted as electrostatic attraction, hydrogen bonding and pi-pi stacking interaction. Based on results, the as-obtained adsorbents were effective, inexpensive and expected to be applied to the treatment of dyestuff.
摘要：
A series of novel porous hydrogen-generation materials with the formulae Al-(BiO)2CO3, Al-4BiNO3(OH)2 center dot BiO(OH), and Al-Bi2(SO4)3 were synthesized by ball milling and spark plasma sintering (SPS). Their hydrogen-production properties were investigated. The results revealed that doping Al-(BiO)2CO3 in aluminium powder was the most effective for improving the hydrogen-generation performance. The hydrogen-conversion yield and maximum hydrogen-generation rate (MHGR) of the Al-(BiO)2CO3 block reached 94.9% and 384.6 mL g-1 min-1, respectively. Mechanism study indicated that (BiO)2CO3 decomposed into Bi2O3 and CO2, and the produced Bi2O3 could react with Al to produce Bi and Al2O3in situ during the SPS process. Herein, the produced CO2 could also form a large number of holes in the bulk sample under the action of sintering pressure to obtain the porous Al-(BiO)2CO3 composite. The hydrogen-generation performance of Al-(BiO)2CO3 was thus substantially enhanced under the synergistic effect of these factors. A series of novel porous hydrogen-generation materials with the formulae Al-(BiO)2CO3, Al-4BiNO3(OH)2 center dot BiO(OH), and Al-Bi2(SO4)3 were synthesized by ball milling and spark plasma sintering (SPS).
期刊：
Journal of Energy Storage,2024年85:111124 ISSN：2352-152X
通讯作者：
Ye Tan<&wdkj&>Ju-Lan Zeng
作者机构：
[Ye Tan; You-Tong Zhu; Rong Chen; Sheng-Ci Cui; Qi Wang; Lin-Ping Yu; Ju-Lan Zeng] Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, PR China;Hunan Xiangli Salt Chemical Co, Ltd, Jinshi 415400, PR China;[Chuan-Chang Li] School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410114, PR China;[Ping Hu] Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, PR China<&wdkj&>Hunan Xiangli Salt Chemical Co, Ltd, Jinshi 415400, PR China
通讯机构：
[Ye Tan; Ju-Lan Zeng] H;Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, PR China
摘要：
Microencapsulating phase change materials (PCMs) with CaF2 as shell could obtain not only novel microencapsulated PCMs (MPCMs) but also potential luminescence materials with self-thermal regulation property. Prior to the preparation of good luminescent MPCMs with doped CaF2 as shell, the formation mechanism of the MPCMs should be well understood. In this work, n-octadecane (ODE) was selected as core to prepare CaF2 MPCMs and the formation mechanism was comprehensively investigated. The results revealed that the concentrations of the Ca2+ and the F− in the solution, which could be adjusted by the coordination equilibrium of Ca-citrate complex and the hydrolysis balance of NaBF4, played key roles in formation of the MPCMs. Moreover, the formation of the MPCMs was composed of five periods, including: formation of emulsion; formation of Ca-citrate intermediate microcapsules; induction of CaF2 shell; growth and aggregation of CaF2 shell and overgrowth of CaF2. Meanwhile, the results also revealed that prolonging the overgrowth period of CaF2 had significant effects on the morphology and properties of the prepared MPCMs. In addition, with the increase of the reaction temperature, the nucleation, growth and aggregation of CaF2 crystals could be accelerated, and the formation and growth periods of the CaF2 shell were shortened. This work is not only significant for the preparation and optimization of MPCMs with CaF2 as shell, but also can guide and promote the development of luminescent MPCMs.
作者机构：
[Hongxiang Li; Wei He; Pei Cheng] State Key Laboratory of Polymer Materials Engineering, Department of College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, China;Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, DK-9220 Aalborg, Denmark;Authors to whom correspondence should be addressed.;Sino-Danish Center for Education and Research, DK-8000 Aarhus, Denmark;[Guojuan Li] National Anti-Drug Laboratory Sichuan Regional Center, Chengdu 610206, China
通讯机构：
[Zhengkun Du; Zhong Cao] A;[Donghong Yu] D;Department of Chemistry and Bioscience, Aalborg University, Fredrik Bajers Vej 7H, DK-9220 Aalborg, Denmark<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>Sino-Danish Center for Education and Research, DK-8000 Aarhus, Denmark<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>College of Energy Storage Technology, Shandong University of Science and Technology, Qingdao 266590, China<&wdkj&>Authors to whom correspondence should be addressed.<&wdkj&>Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, China
关键词：
benzodithiophene;donor polymer;photovoltaic;organic solar cells;power conversion efficiency
摘要：
Although much promising synthetic progress in conjugated polymer-based organic solar cells (OSCs) has resulted in significant improvement in power conversion efficiencies (PCEs) of from over 15 to >19.0% in the last five years, the sophisticated and complex reactions from at least two families’ monomers with remarkably different electron push–pull effects could still pose an unavoidable material burden for the commercialization of OSCs in the coming future. Therefore, the method of preparing a homopolymer from a sole monomer would significantly reduce the synthetic steps and costs in order to pave the way for the large-scale production of OSC materials. Therefore, alkylthio-thiophenyl-substituted benzo[1,2-b;4,5-b′]dithiophene (BDTTS) as the sole and key structural moiety with dihalogen and distannyl functional groups was designed and synthesized, respectively, in this study, for facile monomer syntheses and polymerizations to achieve three wide-bandgap homopolymer donors of BDTTS-alt-BDTT-Cl (P13), BDTTS-alt-BDTT (P15), and BDTTS (P14), respectively. The structural symmetry dependency on their physical, electrochemical, and optical properties, thin-film morphologies, and photovoltaic (PV) performance was investigated in detail. As a result, OSCs based on the asymmetric polymer P15, paired with BTP-eC9 as the electron acceptor, presented the best PV performance, with a PCE of 11.5%, a fill factor (FF) of 65.87%, and a short-circuit current (JSC) of 22.04 mA·cm−2, respectively. This PCE value is among the highest ones reported for BDT-type homopolymer donor-based OPVs, providing us with knowledge for obtaining promising PV performance from devices made of P15-like materials.
摘要：
Lithium metal batteries (LMBs) based on metallic Li exhibit high energy density to be competent for advanced energy storage applications. However, the unstable solid electrolyte interphase (SEI) layer due to continuous decomposition of electrolytes, and the attendant problem of Li dendrite growth frustrate their commercialization process. Herein, a hybrid SEI comprising abundant LiF, lithiophilic Li-Ge alloy, and Ge nanoparticles is constructed via a simple brush coating method. This fluorinated interface layer with embedded Ge-containing components isolates the Li anode from the corrosive electrolyte and facilitates homogenous Li nucleation as well as uniform growth. Consequently, the modified Li anode exhibits remarkable stability without notorious Li dendrites, delivering stable cycling lives of more than 1000 h for symmetric Li parallel to Li cells and over 600 cycles for Li parallel to Cu cells at 1 mA center dot cm-2. Moreover, the reinforced Li anodes endow multiple full-cell architectures with dramatically improved cyclability under different test conditions. This work provides rational guidance to design an artificial hybrid SEI layer and would stimulate more ideas to solve the dendrite issue and promote the further development of advanced LMBs.
关键词：
Prussian blue analogue;Sulfide;Nanocubes;Supercapacitors
摘要：
In this work, 3D nanocubes NiCo-PBA sulfide (NiCoS-PBA) has been prepared by ammonia solution etching and vulcanizing for NiCo-Prussian blue analogue (NiCo-PBA) homemade. The SEM and TEM show that the obtained NiCoS-PBA has the 3D nanocubes structure with rough surface and inward depressions. Electrochemical analysis indicates that an ultrahigh specific capacitance of NiCoS-PBA is 965 C g-1 at 1 A g-1, which is better than that of NiCo-PBA# (256 C g-1), only sulfurized NiCoS-PBA# (369 C g-1) and only etched NiCo-PBA (281 C g-1) at the same condition. This is thanks to the 3D nanocubes structure, which has large accessible areas and rich active sites for redox reactions to enhance the electrochemical performance of supercapacitors. Meanwhile, this also illustrates that the etching and vulcanizing treatments can significantly boost the specific capacitance of NiCoSPBA. Additionally, the NiCoS-PBA-based asymmetric supercapacitor (ACS) device offers an energy density of 61.7 Wh kg- 1 at a power density of 800.1 W kg -1. It is believed that NiCoS-PBA will be a strong contender as an electrode material in supercapacitors.
摘要：
The self‐floating Cu3BiS3/polydopamine/polyurethane sponge, activated by peroxydisulfate (PDS), demonstrates high catalytic performance. Experiments reveal that the degradation of tetracycline (TC) involves the synergistic action of non‐radical 1O2 and free radicals (SO4⋅− and • OH), along with the conversion of Cu+/Cu2+. Additionally, the interfacial evaporation process achieves a remarkable evaporation rate of 1.53 kg m−2 h−1, producing reclaimed water free of detectable TC contaminants. Abstract The advanced oxidation process based on persulfate group is a promising technology for water purification. However, the synergistic effect of free radical and non‐free radical degradation is still not feasible in the persulfate activation process, which consumes a large amount of external energy. The self‐floating Cu3BiS3/polydopamine/polyurethane sponge was prepared using a simple method, resulting in high catalytic performance when activated by peroxydisulfate (PDS). The experiments conducted to identify free radicals showed that the degradation process of tetracycline (TC) involved the synergistic action of non‐radical 1O2 and free radicals (SO4⋅− and • OH) and the conversion of Cu+/Cu2+. The addition of Cl−, HCO3−, PO43−, and SO42− to the solution did not significantly affect the high degradation rate of TC. Furthermore, the interfacial evaporation process achieved a remarkable evaporation rate of 1.53 kg m−2 h−1 and produced reclaimed water without any detectable TC contaminants. The sponge also exhibited excellent salt resistance and chemical stability. This study provides valuable insights into the degradation of antibiotics and the desalination of seawater.
期刊：
Journal of Environmental Chemical Engineering,2024年12(2):112075 ISSN：2213-3437
通讯作者：
Li Wan
作者机构：
[Bo Liu; Xiang-Long Ding; Yi-Ming Dai; Li Wan] School of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha University of Science and Technology, Changsha 410114, PR China
通讯机构：
[Li Wan] S;School of Chemistry and Chemical Engineering, Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha University of Science and Technology, Changsha 410114, PR China
摘要：
The research on green hydrate kinetic inhibitors has gained significant attention due to their commendable environmental compatibility. In this study, guar gum and its derivatives (hydroxypropyl guar gum, cationic guar gum, carboxymethyl guar gum) were chosen as potential kinetic inhibitors to investigate their effects on methane hydrate formation and dissociation in terms of different structures, ionic types and concentrations. It was found that the four guar gums were feasible as green hydrate kinetic inhibitors. Among them, carboxymethyl guar gum exhibited the best performance in nucleation and growth inhibition, with the induction time 2.7 times longer than that of PVP system and the maximum standardized growth rate 80% lower than pure water system, at the optimal concentration (1.0 wt%). The inhibition performance of hydroxypropyl guar gum was observed to be significant only at high concentrations, whereas cationic guar gum exhibited comparatively weaker performance compared to regular guar gum. In addition, the hydrate systems in presence of more effective guar gums were observed more difficult to dissociate, requiring higher dissociation temperature and displaying lower dissociation rates. These results provide guidance for the use of biopolymers in the field of natural gas flow assurance.
期刊：
Biosensors and Bioelectronics,2024年253:116144 ISSN：0956-5663
通讯作者：
Yang, Ruimeng;Zhou, Yibo
作者机构：
[Zeng, Ni] Center for Translational Medicine, Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China;[Guan, Xiuhong] The First School of Clinical Medicine, Jinan University, Guangzhou, 510632, China;[Liu, Xiaowen] Hunan Provincial Key Laboratory of Regional Hereditary Birth Defects Prevention and Control, Changsha Hospital for Maternal & Child Health Care Affiliated to Hunan Normal University, Changsha, 410007, China;[Shi, Huiqiu] Hunan Provincial Key Laboratory of Cytochemistry, Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha, 410114, China;[Li, Nan] Department of Radiology, Guangzhou First People's Hospital, Guangzhou, 510180, China
通讯机构：
[Zhou, Yibo] H;[Yang, Ruimeng] D;Department of Radiology, Guangzhou First People's Hospital, Guangzhou, 510180, China. Electronic address:;Hunan Provincial Key Laboratory of Cytochemistry, Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha, 410114, China. Electronic address:
关键词：
Early diagnosis;Fibroblast activation protein;Fluorescence imaging;Renal fibrosis;Unilateral ureteral occlusion
摘要：
Early diagnosis and treatment of renal fibrosis (RF) significantly affect the clinical outcomes of chronic kidney diseases (CKDs). As the typical fibrotic ailment, RF is characterized by remodeling of the extracellular matrix, and the activation of fibroblast activation protein (FAP) plays a crucial role in the mediation of extracellular matrix protein degradation. Therefore, FAP can serve as a biomarker for RF. However, up to now, no effective tools have been reported to diagnose early-stage RF via detecting FAP. In this work, a polymeric nanobeacon integrating an FAP-sensitive amphiphilic polymer and fluorophores was proposed, which was used to diagnose early RF by sensing FAP. The FAP can be detected in the range of 0 to 200ng/mL with a detection limit of 0.132ng/mL. Furthermore, the fluorescence imaging results demonstrate that the polymeric nanobeacon can sensitively image fibrotic kidneys in mice with unilateral ureteral occlusion (UUO), suggesting its potential for early RF diagnosis and guidance of FAP-targeted treatments. Importantly, when employed alongside with non-invasive diagnostic techniques like magnetic resonance imaging (MRI) and serological tests, this nanobeacon exhibits excellent biocompatibility, low biological toxicity, and sustained imaging capabilities, making it a suitable fluorescent tool for diagnosing various FAP-related fibrotic conditions. To our knowledge, this study represents the first attempt to image RF in early stage by detecting FAP, offering a promising fluorescent molecular tool for diagnosing various FAP-associated diseases in the future.
作者：
Chenhui Wang;Kairong Huang;Liwen Mao;Xichao Liang;Zhenggang Wang
期刊：
Journal of Environmental Chemical Engineering,2024年12(2):112257 ISSN：2213-3437
通讯作者：
Xichao Liang<&wdkj&>Zhenggang Wang
作者机构：
[Chenhui Wang; Zhenggang Wang] Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, PR China;[Kairong Huang; Liwen Mao; Xichao Liang] Research and Application of Regenerative Cellulose Fiber Key Laboratory of Sichuan Province, YiBin Grace Group Co., LTD, Yibin 644000, PR China
通讯机构：
[Xichao Liang] R;[Zhenggang Wang] H;Research and Application of Regenerative Cellulose Fiber Key Laboratory of Sichuan Province, YiBin Grace Group Co., LTD, Yibin 644000, PR China<&wdkj&>Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, School of Chemistry and Chemical Engineering, Changsha University of Science and Technology, Changsha 410114, PR China
摘要：
The pollution resulting from excessive phosphorus usage has garnered significant attention. In this study, the cellulose composite fiber was fabricated by immobilizing La doped UiO66-NH2 nanoparticles onto cellulose fiber through a facile in-situ hydrothermal synthesis method. Nanosized UiO66-NH2 particles were uniformly distributed on the CCF, and La doping induced defects in the crystal structure of UiO66-NH2, which provided active sites for phosphate absorption. The composite cellulose fiber materials exhibited fast (1 h) and effective (7.6 mg g−1) adsorption properties to phosphate compare to other adsorption materials. Moreover, the adsorption process for phosphorus were spontaneous and endothermic, which accorded with pseudo-second-order kinetic and Langmuir isotherm models. FTIR and XPS analyses elucidate that chemical bond and electrostatic attraction between Zr/La-O-P play pivotal roles in phosphate capture mechanism. The adsorption was driven by two interaction, namely electrostatic interaction between -NH2 and phosphate and chemical bond of Zr-O-P and La-O-P. Notably, the composite fiber exhibited effective adsorption ability within a wide pH range of 3–7, and excellent selectivity to phosphate under common interfering ions such as SO42-, NO3-, and Cl-. Overall, this research has provided new thinking of La-UiO66-NH2/CCF as a promising phosphate adsorbent possessing favorable adsorption properties, which will facilitate the utilization of cellulose composite fibers in wastewater treatment.
摘要：
L<bold>-</bold>Tryptophan (L-Trp), one of the essential amino acids, is crucial for human physiological homeostasis and a limiting amino acid in animal feed. In addition, L-Trp is a precursor of some important biomolecules in the body, such as pentraxin and melatonin. Disorders of L-Trp metabolism in the body may cause Alzheimer's or Parkinson's disease. Therefore, monitoring L-Trp levels in the body fluids quickly and accurately is essential. A colorimetric biosensor was developed for the rapid detection of L-Trp in solutions by coupling a novel, screened, and validated peptide aptamer with Au nanoparticles via the Au-S bond. The biosensor showed a wide linear detection range of 1 mu M - 1000 mu M, and in addition, it was simple to construct, and the reaction time was as short as 10 s. In the analysis of L-Trp in actual porcine serum samples, the relative standard deviations were 4.52 % to 3.01 % compared with those of the high-performance liquid chromatography method, and the spiked recoveries were 99.2 % to 100.2 %. This new type of recognition probe is likely to gain attention in the field of bioanalysis owing to its biocompatibility, ease of modification, and easy linkage to nanomaterials.
摘要：
A series of carboxylated carbosilane surfactants with methyl, ethyl, branching CH3-, phenyl, and cyclohexyl (Me-Si2C-COONa, Et-Si2C-COONa, Si2C-La-COONa, Ph-Si2C-COONa, and Cy-Si2C-COONa) were prepared. The effect of isomer and steric hindrance on their micellization in aqueous solution was investigated by surface tension, conductivity, transmission electron microscopy (TEM) and dynamic light scattering (DLS). Si2C-La-COONa with branching CH3- shows a lower gamma CMC value and higher the CMC value compared with Et-Si2C-COONa. Cy-Si2C-COONa with cyclohexyl (41.6 mN m-1) and Ph-Si2C-COONa with phenyl (43.9 mN m-1) have larger gamma CMC values due to the distinct steric hindrance and hydrophobicity. In aqueous solution, the aggregation behavior of Si2C-La-COONa, Cy-Si2C-COONa, and Ph-Si2C-COONa is enthalpy-driven. However, the micellization process of Me-Si2C-COONa and Et-Si2C-COONa is governed by the enthalpy-driven at high temperature and entropy-driven at low temperature. DLS and TEM results indicate that the carboxylated carbosilane surfactants can self-assemble into aggregate with hydrodynamic diameters of 50-400 nm.
