ELECTROCHIMICA ACTA
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2019
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IF 5.383
Fei Ma,Xiaoqiang Dai,Jie Jin,Ning Tie,Yatang Dai
Despite cobalt molybdenum sulfide (CoMoS 4 )-based materials are a prospective class of electrode material for supercapacitors , their relatively inferior rate capability and cyclic stability have severely restricted practical applications. Engineering multicomponent binder-free electrode material is deemed an effective approach to fulfill the demand of high-performance supercapacitors. Herein, the hierarchical core-shell hollow CoMoS 4 @Ni–Co–S nanotubes supported on flexible carbon cloth are designed through a scalable hydrothermal method combined with electrodeposition process. Due to the synergistic contribution of highly conductive CoMoS 4 nanotubes core and highly active nickel cobalt sulfide nanosheets shell, the 3D hierarchical CoMoS 4 @Ni–Co–S nanotubes electrode achieves a remarkable specific capacitance of 2208.5 F g −1 at a rate of 1 A g −1 and extraordinary cycling life (91.3% capacitance retention over 5000 cycles at 3 A g −1 ). Moreover, the assembled CoMoS 4 @Ni–Co–S//activated carbon (AC) asymmetric supercapacitor presents satisfactory electrochemical performance, delivering an energy density of 49.1 W h kg −1 at a high power density of 800 W kg −1 and competitive cyclic stability (90.3% retention of initial capacity after 10000 cycles). This work designs an effective synthetic route and validates the potential prospects of binder-free 3D hierarchical architecture for developing high-performance and advanced energy storage devices.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2019
·Vol. 137
·期 18
·48634
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IF 2.188
Guoqiang Wang,Yin Liang,Min Jiang,Qiang Zhang,Rui Wang,Honghua Wang,Guangyuan Zhou
The purpose of this study was to enhance the glass-transition temperature of poly(butylene 2,5-thiophenedicarboxylate) (PBTF). A series of poly(butylene- co -1,4-cyclohexanedimethylene 2,5-thiophenedicarboxylate)s (PBCTFs) were synthesized from 2,5-thiophenedicarboxylic acid, 1,4-cyclohexanedimethanol (CHDM), and 1,4-butanediol. CHDM can increase the chain rigidity and lead the β relaxation temperature shift to lower temperature. Consequently, PBCTFs showed not only the high glass-transition temperature, but also high elongations at break. PBTF was a crystalline polyester. However, differential scanning calorimetry and wide-angle X-ray diffraction results suggested PBCTFs were amorphous polyesters. Thermogravimetric analysis results indicated the thermal stability of copolyesters was gradually enhanced with increasing the CHDM content. When the CHDM content was 95 mol %, PBCTF95 exhibited high glass-transition temperature (69.2 °C), tensile strength (44.4 MPa), and elongation at break (205%). © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48634.
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FUEL
·
2019
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IF 5.128
Chen Li,Yuefei Song,Xudong Wang,Quan Zhang
Sulfonated titanium dioxide (S-TiO 2 ) was prepared by the grafting of sulfonic groups onto TiO 2 , and doped into the PVDF-g-PSSA as a highly efficient inorganic additive, thus achieving simultaneous improvement of the proton conductivity and anti-fouling property of the synthesized S-TiO 2 /PPSSA proton exchange membrane (PEM). The S-TiO 2 /PPSSA membrane was implemented in microbial fuel cell (MFC) for the first time, and its physicochemical properties and performance in MFC were studied. A new technique of combining Quartz crystal microbalance with dissipation with membrane spin-coated sensors made by a spin coating method was utilized to provide an insight into the anti-fouling property of the prepared membranes. The implementation of Fourier transform infrared spectrometry and X-ray photoelectron spectroscopy demonstrated TiO 2 was successfully introduced into the sulphonic groups. The S-TiO 2 /PPSSA-5.0 membrane has a significant increase in the water uptake (40.9%) and proton conductivity (0.067 S/cm) compared with the PVDF-g-PSSA membrane. QCM-D results indicated that it has better anti-fouling property than pristine membrane and Nafion 117. Moreover, the MFC with the S-TiO 2 /PPSSA-5.0 membrane exhibited a maximum power density of 130.54 mW/m 2 , very close to that of Nafion 117 (132.02 mW/m 2 ), but had the highest COD removal of 91% and least bio-fouling adsorption. These results demonstrate that the blending of sulfonated organic polymers and sulfonated inorganic additives can improve the electrochemical and anti-fouling properties of the composite membranes, which is a new concept for the preparation of PEM suitable for MFC. The S-TiO 2 /PPSSA-5.0 composite PEM is an appropriate candidate separator for the large-scale application of MFCs.
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CARBOHYDRATE POLYMERS
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2019
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IF 6.044
Hao Qian,Xiaofei Shen,Hailong Huang,Yan Zhang,Mingtao Zhang,Huiqing Wang,Zhongkai Wang
Cellulose graft copolymers are an effective way to endow new properties to cellulose substrate, as well the rigidity, regularity, and helicity of the cellulose backbone could induce the self-assembly of supramolecular structures. In this work, right-handed helical poly(phenyl isocyanide)s (PPI n ) were grafted selectively onto C-6-cellulose. Alkyne-terminated PPI n was synthesized by living polymerization of right-handed phenyl isocyanide monomer using an alkyne-terminated palladium(II) complex as an initiator/catalyst, and were grafted onto the C-6 of the cellulose backbone (Cell-6-g-PPI n ) at various chain lengths using copper-catalyzed alkyne-azide cycloaddition (CuAAC) “click” chemistry. We confirmed the successful grafting by liquid 1 H NMR and 13 C NMR, as well as solid 13 C NMR, FTIR, and GPC. After grafting onto cellulose, the right-handed chirality of PPI n was significantly increased by 111.2%. Additionally, the Cell-6-g-PPI n exhibited better chiral recognition of L-Phe-DNSP than PPI n alone. Therefore, the helical cellulose backbone has enhanced effect on preferred helix of PPI n .
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高影响因子
JOURNAL OF ORGANOMETALLIC CHEMISTRY
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2019
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IF 2.066
Amin Khan,Haojie Yu,Yang Wang,Li Wang,Raja Summe Ullah,Fazal Haq,Tarig Elshaarani,Muhammad Usman,Ahsan Nazir,Kaleem-ur-Rehman Naveed
Different copolymers (poly(2-(methacryloyloxy) ethyl ferrocene carboxylate- co -methacrylo-4-aminoazobenzene- co -methacrylic acid)s) (P(FHEMA- co -MAZO- co -MAA)s) were synthesized and their different properties were analyzed in this work. Methacrylic acid was introduced as a side group to possibly affect the photostability. The synthesized copolymers were characterized by nuclear magnetic resonance ( 1 H NMR) spectroscopy and gel permeation chromatography (GPC). Thermal studies were performed by thermogravimetric (TG), differential thermogravimetric (DTG) and differential scanning calorimetry (DSC) analysis, which showed that the copolymers were thermally stable under the operating conditions of the information storage devices. Redox studies and photoresponsive studies were performed by CV technique and UV/vis spectroscopy which showed that these copolymers contained good redox and photoresponsive properties. The obtained results paved the way towards the four states information storage of the materials.
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CHEMICAL ENGINEERING SCIENCE
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2026
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IF 5.1
Xingwang Yan,Bin Wang,Wenhui Lin,Ying Hu,Jintao Dong,Gaopeng Liu,Paul K. Chu,Jiexiang Xia,Huaming Li
The flower-like ZnIn2S4 with S vacancies have been prepared via heat treatment method. • S vacancies induce defect states acting as electron traps. • These traps effectively capture electrons and separate photogenerated carriers. • ZnIn2S4 with S vacancies exhibits outstanding degradation performance for RhB and MBT. Photocatalytic degradation is an effective wastewater treatment, but the separation of photogenerated carriers limits the efficiency. Herein, flower-like ZnIn 2 S 4 (ZIS) samples composed of ultrathin nanosheets with different numbers of S-vacancies are synthesized. S vacancies as electron traps promote the separation of photogenerated charges and also serve as active centers to promote the adsorption of O 2 to produce more ·O 2 − and 1 O 2 . The experimental results confirm that the photocatalytic efficiency is related to the number of S vacancies. ZIS-100, which possesses the appropriate number of S vacancies, delivers the best photocatalytic degradation activity. After light irradiation for 30 and 180 min, ZIS-100 degrades 97.8% of RhB and 94.9% of the MBT. The photocatalytic degradation pathway is analyzed, and a mechanism is proposed for defective ZnIn 2 S 4 . This work offers valuable insights into the role and mechanism of defects to enable the design of more efficient defective photocatalytic materials. Download: Download high-res image (87KB) Download: Download full-size image
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JOURNAL OF MOLECULAR STRUCTURE
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2026
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IF 4.9
Yunchang Fan,Shuiqing Yang,Jingjing Chen,Han Wang,Zheng Ruan,Haibao Zhu
Pyridinium PILs outperform quaternary ammonium ones for Au(III) adsorption. • Anion–π and H-bonding synergistically enhance Au(III) capture by pyridinium PILs. • Cl – -form PILs show higher Au uptake than Br – -form due to weaker dispersion forces. • PTPB-Cl achieves fast, selective Au recovery from waste CPU leachate. • PTPB-Cl maintains stable performance and structure over 10 adsorption cycles. A series of pyridinium- and quaternary ammonium-based poly(ionic liquid)s (PILs) with chloride (Cl − ) or bromide (Br − ) counter-anions were synthesized and evaluated for the adsorption of AuCl 4 − from aqueous solutions. The adsorption kinetics followed the pseudo-second-order model, and equilibrium data were well described by the Langmuir isotherm, indicating monolayer chemisorption. Pyridinium-based PILs exhibited significantly higher gold uptake than their quaternary ammonium analogues, attributable to the synergistic contribution of anion–π interactions, and C–H···Cl hydrogen bonding. Chloride-form PILs outperformed their bromide counterparts due to the lower polarizability of Cl⁻, which weakens dispersion interactions with the PIL backbone and facilitates anion exchange. The optimized PIL, PTPB-Cl, achieved efficient gold recovery from actual waste CPU leachate with negligible interference from coexisting metal ions. Moreover, PTPB-Cl maintained stable adsorption and desorption efficiencies over ten consecutive cycles, and post-recycling characterizations confirmed its structural integrity and complete gold desorption. Download: Download high-res image (265KB) Download: Download full-size image
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Sustainability
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2026
·Vol. 18
·期 18
·9444
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IF 4.1
Nianping Chi,Yang Luo,Zhenwen Yang,Yuanping Li,Zhenyu Wang,Jun Zhou
Biochar was synthesized through high-temperature pyrolysis, and a biochar-supported nitrogen and sulfur co-doped BiOBr (BC/N,S-BiOBr) photocatalyst was successfully prepared via a one-step solvothermal method, which was applied for the degradation of tetracycline (TC), a widely detected representative antibiotic pollutant, in aqueous solution. This study systematically investigated the effects of catalyst type, initial solution pH, catalyst dosage and initial TC concentration on the photocatalytic degradation process. The experimental results showed that the as-prepared BC/N,S-BiOBr composite exhibited a flower-like nanosphere morphology, characterized by a more complete three-dimensional hierarchical structure, larger specific surface area and suitable optical absorption band, which endowed the composite with significantly improved visible-light absorption capability. Under the optimized reaction conditions (pH = 5, catalyst dosage of 0.7 g/L, initial TC concentration of 10 mg/L), the degradation efficiency of TC over BC/N,S-BiOBr reached 98% after 50 min of visible-light irradiation. In situ electron paramagnetic resonance (EPR) spectroscopy combined with radical quenching experiments confirmed that the modified composite contained abundant oxygen vacancies, and the main reactive species governing TC degradation were identified as photogenerated holes (h+), hydroxyl radicals (·OH) and superoxide radicals (·O2−), with their contribution to TC degradation following the order of h+> ·OH > ·O2−. In summary, by converting municipal sludge into biochar-supported N,S-BiOBr photocatalyst, the modified BC/N,S-BiOBr composite exhibits faster photocatalytic reaction kinetics and higher tetracycline removal efficiency compared with pristine BiOBr, while simultaneously enabling waste resource recovery, solar energy exploitation, and water purification, thereby comprehensively promoting sustainable development in terms of environmental remediation, resource circulation, and low-carbon operation.
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Journal of Water Process Engineering
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2023
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IF 7
Pengjia Sun,Ping Sun,Yingsen Fang,Hui Liu,Bitao Xiong,Hui Wang,Xingao Li
This paper proposed a new system, electrochemically activated periodate (E/PI) with a Ti/RuO 2 -IrO 2 anode, for the efficient degradation of endocrine disrupting chemical bisphenol S (BPS). The results suggested that the degradation efficiency reached 100 % after 30 min at the conditions of PI 0.25 mM, current density 2 mA/cm 2 and pH 7.2. In comparison to other activators of PI (e.g., ultrasonic or visible light) and electrochemically activated different oxidants (e.g., persulfates or H 2 O 2 ), the E/PI system was found to be more effective in degrading BPS. The system showed a faster degradation rate with increasing current density or PI dose, and demonstrated a strong anti-interference capability against the humic acid and inorganic anions present in water. The system also demonstrated excellent stability, and can still remove 100 % of BPS even after 40 intermittent semi-continuous operations (20 h). The singlet oxygen ( 1 O 2 ) was identified as the primary reactive oxygen species (ROS) for the BPS degradation, as revealed by the free radical quenching and the electron paramagnetic resonance (EPR) experiment. In addition, the intermediates of BPS during its degradation process and main degradation pathways were proposed. The E/PI system can be used as a new AOPs and has practical application potential in water treatment .
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CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Chao Wang,Baokang Dang,Hanwei Wang,Yipeng Chen,Yushan Yang,Yingying Li,Ye Xiong
The assembly of heterogeneous photocatalysts with unique structures by 2D heterojunctions is an advanced strategy for efficient solar energy conversion. However, heterogeneous photocatalysts constructed from 2D materials will suffer from high photogenerated charge recombination and low light absorption due to the arbitrary stacking and weak bonding of lamellae. Here, flower-like Bi 4 O 5 I 2 / β -Bi 2 O 3 (FL-Bi 4 O 5 I 2 / β -Bi 2 O 3 ) heterojunctions are developed in situ using FL-δ-Bi 2 O 3 as the starting material. It is noteworthy that the basic compositional form of the material was well maintained throughout the synthesis. Besides, due to the random reaction of iodide ions with the exposed surface of δ-Bi 2 O 3 , multiple heterogeneous regions are displayed on the basic lamellar units constituting the Bi 4 O 5 I 2 /β-Bi 2 O 3 nanoflowers. Theoretical and experimental results reveal that FL-Bi 4 O 5 I 2 /δ-Bi 2 O 3 possesses not only improved photogenerated carrier separation, enhanced light harvesting, but also considerable CO 2 adsorption. Importantly, FL-Bi 4 O 5 I 2 / β -Bi 2 O 3 achieves S-scheme CO 2 conversion due to its reasonable energy band structure, and with the CO generation rate of up to 31.74 μmol g −1 h −1 under simulated sunlight.
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JOURNAL OF MEDICINAL CHEMISTRY
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2020
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IF 6.205
Ji Liu,Xin Liu,Jianqiang Qian,Chi Meng,Peng Zhu,Jiaying Hang,Yaling Wang,Biao Xiong,Xiaodong Qiu,Weizhong Zhu,Yumin Yang,Yanan Zhang,Yong Ling
Two novel theranostic agents HJTA and HJTB have been designed and synthesized by covalently linking a β-carboline derivative, with antitumor activities and pH-responsive fluorescence, with a 2-exomethylenecyclohexanone moiety, which can be activated by the tumor-targeting glutathione (GSH)/glutathione S-transferase π (GSTπ). These agents showed pH- and GSH-dual-responsive fluorescence in tumor cells but not in normal cells. Importantly, HJTA selectively illuminated tumor tissue for up to 7 h and generated precise visualization of orthotopic colonic tumors through the blood circulation system in intraoperative mice. Furthermore, HJTA exhibited potent and selective antiproliferative activities and colonic tumor inhibition in mice. Finally, HJTA induced great cancer cell apoptosis and autophagy by regulating the expression of apoptotic and autophagic proteins. Therefore, this pH/GSH-dual-responsive fluorescent probe with cancer-targeting therapeutic activity provides a novel tool for precise diagnosis and tumor treatment, therefore broadening the impact of multifunctional agents as theranostic precision medicines.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Peng Zhang,Pengyu Guo,Maosheng Zhang,Xiaoyun Qiao,Runwei Wang,Zongtao Zhang,Shilun Qiu
The construction of a dual system for photocatalytic redox reaction is an effective strategy to promote photocatalytic decomposition of water for H 2 evolution, which not only overcomes the slow process of water oxidation during water decomposition but also combines with biomass conversion to produce high-value chemicals. Herein, three-dimensional full-spectrum responsive P–MoS 2 –ZnIn 2 S 4 –2 (P–M−Z−2) flower-like materials are prepared for efficient production of H 2 coupled with benzyl alcohol oxidation by constructing S-scheme heterojunction and P-doping to modulate the sulfur vacancies. In this case, the hole trap P doping site and the electron trap sulfur vacancy have a synergistic effect of regulating the charge flow to realize the photogenerated carrier separation more effectively. The resulting P–M−Z−2 shows a remarkable photocatalytic effect (3763.2 μmol·h −1 ·g −1 for H 2 evolution and almost 100 % yield of benzaldehyde) under visible light irradiation, which was about 9 times higher than that of pure ZnIn 2 S 4 . More importantly, the optimized P-M−Z−2 displays H 2 evolution efficiency of 31423.6 μmol·h −1 ·g −1 and 31297.7 μmol·h −1 ·g −1 for benzaldehyde generation under simulated sunlight irradiation (AM 1.5G). The construction of S-scheme heterojunctions retains a higher redox potential for the catalysts, which improves the redox capacity and thus the photocatalytic performance, as well as the heterojunctions facilitate the separation and transport of photogenerated carriers. This work not only reveals the strategy to enhance the photocatalytic performance by doping modulation of sulfur vacancies and construction of S-scheme heterojunctions but also provides ideas for realizing efficient valorization of biomass platform compounds.
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