JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Cailing Song,Qianwen Jin,Wen Zhang,Chenchen Hu,Zhumabay Bakenov,Yan Zhao
Lithium-sulfur (Li-S) batteries have drawn a lot of attention owing to the high theoretical capacity of 1675 mAh g −1 , environmental friendliness and relative abundance of sulfur. Nevertheless, the severe dissolution and migration of lithium polysulfides (LiPSs) and poor conductivity of sulfur greatly hinder the practical application of Li-S batteries. In this work, Fe-Ni-P@nitrogen-doped carbon (named as Fe-Ni-P@NC) derived from Fe-Ni Prussian blue analog (Fe-Ni PBA) was used as highly efficient sulfur host for Li-S batteries. The Fe-Ni-P particles not only enhance the adsorption of LiPSs but also effectively promote the conversion of LiPSs. In addition, the CN – of PBAs can readily generate nitrogen-doped carbon during pyrolysis, which can improve the conductivity of composites. Due to these advantages, Li-S batteries using S@Fe-Ni-P@NC composites cathodes exhibited good electrochemical performance with outstanding rate capability and stable cycling over 500 cycles with a lower capacity fading rate of 0.08% per cycle at 1 C.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Pei Qiu,Jinyan Xiong,Mengjie Lu,Lijun Liu,Wei Li,Zhipan Wen,Weijie Li,Rong Chen,Gang Cheng
Solar-driven photocatalytic H 2 evolution could tackle the issue of fossil fuels-triggered greenhouse gas emission with sustainable clean energy. However, splitting water into hydrogen with high performance by a single semiconductor is challenging because of the poor charge separation efficiency. Herein, a novel ternary Cu@TiO 2 -Cu 2 O hybrid photocatalyst with multiple charge transfer channels has been designed for efficient solar-to-hydrogen evolution. Indeed, the ternary Cu@TiO 2 -Cu 2 O hybrid by coupling Cu@TiO 2 with Cu 2 O nanoparticles shows highly-efficient photocatalytic hydrogen generation with rate of 12000.6 μmol·g −1 ·h −1 , which is 4.4, 2.1, and 1.9 times higher than the pure TiO 2 (2728.8 μmol·g −1 ·h −1 ), binary Cu@TiO 2 (5595.5 μmol·g −1 ·h −1 ), and TiO 2 -Cu 2 O (6076.8 μmol·g −1 ·h −1 ) composite, respectively. In such a Cu@TiO 2 -Cu 2 O hybrid, the formed internal electric field in the TiO 2 -Cu 2 O p-n junction allows the electrons in Cu 2 O to migrate to TiO 2 , while the electrons in the CB of TiO 2 could flow into Cu via the Schottky junction at the Cu@TiO 2 interface. In this regard, a multiple charge transfer is achieved between the Cu@TiO 2 and Cu 2 O, which facilitates promoted charge separation and results in the construction of electron-accumulated center (Cu) and hole-enriched surface (Cu 2 O). This p-n/Schottky junctions with steered charge transfer assists the hydrogen production upon the Cu@TiO 2 -Cu 2 O ternary photocatalyst.
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高影响因子
POLYMER SCIENCE SERIES A
·
2023
·Vol. 64
·期 6
·653-661
·
IF 1
Jiang Taijun,Peng Jun,Wang Jin,Yang Jun,Zeng Guangsheng
Abstract The aim was to prepare copolyimide (BPDA/PMDA-PDA) films of low thermal expansion coefficient by incorporating 1,2,4,5-benzenetetracarboxylic anhydride (PMDA) into polymer backbones 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA)/ p -phenylenediamine (PDA). FTIR and WAXD were used to explore the chemical and physical microstructure of the PIs films. DMA, TMA and TGA were used to characterize the mechanical and thermal performance of the PIs film respectively. The results show that the smectic structure of the film was destroyed by introducing rigid PMDA groups. The free volume fraction of polymers reached its maximum value when 40 wt % PMDA was added. The glass transition temperature of the polymers increased from 330 to 430°C and the thermal decomposition temperature declined slightly with the addition of PMDA. The inflection point in thermal expansion coefficient (CTE) of the BPDA-PDA polymers in TMA test reached as high as 470°C. The glass transition temperature of the polymers increased but the service temperature range narrowed with the addition of PMDA. The optimized PMDA concentration to obtain a best CTE was 5% as was revealed by the experimental results. The insights obtained from the experiments indicated that excessive introduction of PMDA into the polymers could increase the glass transition temperature significantly. However, the operating temperature range may be reduced. This research could offer practical and valuable references to the application for co-PI films.
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高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2021
·
IF 5.876
Lihua Qi,Hailin Jiang,Tianni Lin,Xinyu Chang,Bolong Jiang
Background The aim of this study was to develop a class of novel MIL-53(Al) based composite with high phenolic compound adsorption capacity to treat highly toxic phenolic wastewater. Method MIL-53(Al)@AC-x composites with different AC loading ( x ) were constructed by combining MIL-53(Al) with cheap biomass AC derived from cheap rice husk. The adsorbents were characterized by various methods. Significant findings The results showed that the surface area and pore volume of all MIL-53(Al)@AC-x composites increased remarkably, which are much higher than those of pristine AC and MIL-53(Al). The p-nitrophenol adsorption rate of MIL-53(Al)@AC-10 was higher than pristine MIL-53(Al) by 36%. The adsorption performance decreased in the order of MIL-53(Al)@AC-10 > MIL-53(Al)@AC-15 > MIL-53(Al)@AC-5 > MIL-53(Al). The maximum adsorption capacity for p-nitrophenol of MIL-53(Al)@AC-10 reached 250 mg.g −1 , which are higher than the data reported in most literature. The fabrication of AC into MIL-53(Al) is a promising method to obtain a composite with high adsorption capacity and stability. The adsorption kinetics and isotherms fitted well with pseudo-second-order model and Langmiur model. The adsorption is mainly through the π-π and hydrogen bond interactions, and hydrophobic effect.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Chunjie Li,You Xu,Dandan Yang,Xiaoqian Qian,Xingjie Chai,Ziqiang Wang,Xiaonian Li,Liang Wang,Hongjing Wang
The exploration of highly efficient catalysts for electrochemical hydrogen and oxygen production via water splitting is very significant for providing affordable clean energy and reducing the reliance on conventional fossil fuels. Herein, we develop an efficient method to boost the electrocatalytic performance of Pt mesoporous nanoparticles (Pt MNs) for both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) by a facile Ni, P co-incorporation strategy. The co-incorporation of Ni and P atoms in a Pt crystal structure can effectively modify its electronic structure, which contributes to the superior catalytic ability toward HER. We also demonstrate that the as-fabricated PtNiP MNs could occur surface partial oxidation under oxidizing potentials to in situ form OER electroactive oxides/hydroxides species. The unique mesoporous structure and metal–nonmetal ternary alloyed composition make the PtNiP MNs a promising HER–OER bifunctional electrocatalyst for overall water splitting in alkaline media.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2020
·
IF 3.807
Ken Chen,Jianxin Liu,Hongli Bian,Wenjun Wang,Feijun Wang,Ziqiang Shao
Fabricating continuous porous carbon nanofibers (CNFs) based on biomass materials still remains challenging for current supercapacitors (SCs) results from the limitation of carbon yield and molecular flexibility. In this work, P and N dual-doped 1D porous carbon nanofibers (PNF) are prepared through a controllable way by electrospinning phytic acid solution of chitosan (CS)/ polyvinylpyrrolidone (PVP) with subsequent crucial segmented carbonization . Due to the ultra-high specific surface area, extremely low charge transfer resistance, and the contribution of N, P dual doping to pseudocapacitors, the obtained PNF exhibits the highest specific capacitance of 358.7 F g −1 at a current density of 1 A g −1 . More notably, a symmetrical SC assembled by PNF achieves an outstanding capacitance of 94 F g −1 at a current density of 0.5 A g −1 , and a high energy density of 13.1 W h kg −1 at a power density of 248 W kg −1 , furthermore, a high capacitance retention of 87.5% is performed after 10,000 cycles. It is firmly believed that the research on the preparation method and performance of carbon nanofibers involved in this article is of profound inspiration for mobile power sources.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2017
·Vol. 27
·期 23
·1700522
·
IF 12.124
Feier Niu,Jing Yang,Nana Wang,Dapeng Zhang,Weiliu Fan,Jian Yang,Yitai Qian
MoSe 2 grown on N,P-co-doped carbon nanosheets is synthesized by a solvothermal reaction followed with a high-temperature calcination. This composite has an interlayer spacing of MoSe 2 expanded to facilitate sodium-ion diffusion, MoSe 2 immobilized on carbon nanosheets to improve charge-transfer kinetics, and N and P incorporated into carbon to enhance its interaction with active species upon cycling. These features greatly improve the electrochemical performance of this composite, as compared to all the controls. It presents a specific capacity of 378 mAh g −1 after 1000 cycles at 0.5 A g −1 , corresponding to 87% of the capacity at the second cycle. Ex situ Raman spectra and high-resolution transmission electron microscopy images confirm that it is element Se, rather than MoSe 2 , formed after the charging process. The interaction of the active species with modified carbon is simulated using density functional theory to explain this excellent stability. The superior rate capability, where the capacity at 15 A g −1 equals ≈55% of that at 0.5 A g −1 , could be associated with the significant contribution of pseudocapacitance. By pairing with homemade Na 3 V 2 (PO 4 ) 3 /C, this composite also exhibits excellent performances in full cells.
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高影响因子
JOURNAL OF LUMINESCENCE
·
2022
·
IF 4.171
Chenfei Xiang,Xiuping Wu,Yanjie Zhang,Zihan Zhao,Desheng Li,Hao Song,Bing Li
White light with excellent color rendering property has been highly required for comfortable and healthy illumination. A facile strategy to achieve high color rendering index (Ra >90) in practical applications is using near ultraviolet chips as excitation sources combined with RGB phosphors. However, achieving high color rendering with both blue chips and near-ultraviolet (NUV) chips for commercial phosphors dispersed in phosphor-in-glass (PiGs) materials is still a big challenge. In this work, the PiG based on the ultra-low melting point Sn–F–P–O glass with commercial green (Lu 3 Al 5 O 12 :Ce 3+ ) and red (Sr x Ca 1-x AlSiN 3 :Eu 2+ ) phosphors has been successfully fabricated by one-step sintering method. The phase identification and distribution of monochromatic red phosphor in glass (R-PiG) and green phosphor in glass (G-PiG) were investigated in detail. The Sn 2+ ions in Sn–F–P–O matrix show the intense blue emission bands centered at 420 nm under the excitation of NUV chips (365 nm). Notably, the polychromatic red/green phosphor in glasses (R/G-PiGs) are versatile and exhibited excellent color rendering (Ra = 93, Ra = 95, Ra = 92, respectively) properties excited by both blue chips, NUV chips and laser diodes (WLD). The working temperature of R/G-PiGs is stable at ∼33 °C and ∼55 °C when employed in WLEDs/WLDs (1 W), which greatly prevented the phenomenon of “thermal quenching” for the phosphors caused by high temperature. Thus, the versatile R/G-PiG with ultra-high color rendering and excellent thermal properties indicates its promising application in high-power white LEDs/LDs.
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高影响因子
Canadian Journal of Chemistry
·
2018
·Vol. 97
·期 2
·
IF 1.084
Tian Gan,Zhikai Wang,Mengru Chen,Wanqiu Fu,Haibo Wang,Junyong Sun
In this work, the Ag@Cu particles with yolk–shell nanostructure was prepared by facile solvothermal method, which was modified on glassy carbon electrode (GCE) to fabricate electrochemical sensor for the convenient and fast determination of p-aminobenzoic acid (PABA). The surface morphology and electrochemical properties of the as-prepared Ag@Cu nanocomposite modified electrode were characterized by scanning electron microscopy, transmission electron microscopy, chronocoulometry, and electrochemical impedance spectroscopy. Further, the electrochemical sensing of PABA was performed on the Ag@Cu/GCE using cyclic voltammetry and differential pulse voltammetry techniques, showing high catalytic activity. Under the optimal conditions, the sensor exhibited a wide linear range, high sensitivity, and low detection limit of 0.315 μmol/L for PABA. The developed sensor was also successfully applied for PABA detection in anesthetic and cosmetics with satisfactory results.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Weijie Zhang,Shunshun Zhao,Yupeng Xing,Hongjie Qin,Qiling Zheng,Penghui Zhang,Shouwei Zhang,Xijin Xu
The sustainable conversion from solar energy to chemical energy is realized by using photocatalytic technology to produce hydrogen and hydrogen peroxide. In this work, the construction of a direct Z-scheme heterojunction is of great significance for improving the efficiency and stability of photocatalytic hydrogen evolution (PHE) and photocatalytic hydrogen peroxide production (PHP). In this study, P-doped h-BN (PBN) nanosheets are used to support the in-situ growth of ZnIn 2 S 4 nanoflowers via wet chemical method, and sandwich-like PBN/ZnIn 2 S 4 hierarchical heterostructures are successfully synthesized. The PHE performance of PBN/ZnIn 2 S 4 (∼59.46 μmol/h) is ∼ 2.35 times than that of the original ZnIn 2 S 4 (∼25.27 μmol/h), and the PHP performance (∼122.82 μmol/L/h) is 39.37 times than that of PBN (∼3.12 μmol/L/h). The excellent photocatalytic performance of PBN/ZnIn 2 S 4 can be attributed to the following points: (1) the acceleration of the separation of photogenerated electron-hole pairs induced by the formation of Z-scheme heterostructure; (2) reasonable design and construction of sandwich-like PBN/ZnIn 2 S 4 hierarchical heterostructure; (3) the promotion the migration and separation of photogenerated carriers by the built-in electric field. This work provides new ideas for the development of high-efficiency PHE and PHP Z-scheme heterojunction photocatalyst design.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
An-Min Fei,Liang Wu,Mei-Tong Wei,Wen-Hua Shi,Zhi Qian,Zong-Bu Qin,Hemdan S.H. Mohamed,Zhi-Yi Hu,Jing Liu,Yu Li,Bao-Lian Su
The silicon (Si) anode boasts an exceptionally high theoretical capacity (4200 mAh g −1 ), making it an attractive candidate for advanced lithium-ion batteries (LIBs). However, its practical application is limited by poor electrical conductivity and disastrous volume expansion. In this work, we have successfully synthesized a yolk-shell composite material (Si@H-CoNPSC) consisting of N, P, S co-doped carbon encapsulated silicon nanoparticles (SiNPs) via a self-template method based on the Kirkendall effect. The Si@H-CoNPSC anode exhibits excellent electrochemical performance, after 300 cycles, keeping a specific capacity of 872.8 mAh g −1 at 1 A g −1 . Additionally, after 150 cycles, it retains 1305.8 mAh g −1 at 0.5 A g −1 , with a capacity retention of 91.1 %. These outstanding results are mainly due to the co-doped hollow carbon shell, which improves the anode’s conductivity and reduces volume changes during cycling. This study provides new insights for the designing of silicon-carbon anode structures for high-performance LIBs.
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Liu Dan Yu,Pan Xue,Zhang Jingli,Tong Yinjia,Zhang Yixuan,Yu Yanjing,Zhang Qingda,Huang Mengfei,Yiheng Gao,Jie Li,Qufu Wei,Pengfei Lv
The rapid development of intelligent wearable devices and health monitoring equipment demands bio-based materials that integrate multiple functions with enhanced durability. Herein, this work is an first attempt to develop flexible electromagnetic shielding and stress-strain sensing based on a composite of polydopamine (PDA) modified-MXene (p-MXene) film with waterborne polyurethane (WPU)/bacterial cellulose (BC) film. The durable p-MXene@WPU/BC composite films are found to demonstrate excellent mechanical properties (370 MPa) and stable interfacial adhesion, attributing to the interlocking network structure between WPU and WBC and the strong hydrogen bonding between p-MXene layer and WPU/BC layer. The resultant composite film displays remarkable mechanosensing performance, facilitating the accurate and reliable detection of human physiological signals. Importantly, the prepared composite film could effectively reflect and absorb electromagnetic waves through the high conductivity of p-MXene layer and the staggered nanonetwork structure of WPU/BC layer, thus achieving a shielding effect of up to 72 dB. As proof-of-concept illustrations, it is noteworthy that the electromagnetic shielding efficacy displays a dynamic interaction with the strain sensing performance during the stretching process, which is primarily attributed to the moderating effect of the efficient attachment and parallel-aligned structure of p-MXene nanosheets. The research herein can offer new perspectives on the development of advanced bio-based multiple functions materials and dynamic perceptual interaction and smart wearables.
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产品关联
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高影响因子
危险品化学品经营许可证（带存储）