JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·
IF 2.7
Xuhui Wang,Guojie Zhang,Huanhuan Dong,Yong Zhang
Maltitol, a natural compound, offers a potentially eco-friendly alternative to conventional auxiliary thermal stabilizers. Its auxiliary stabilization effect was studied by discoloration tests, Congo red tests, thermogravimetric analysis, and UV–visible spectroscopy. Additionally, x-ray photoelectron spectroscopy and discoloration tests were used to study the stabilizing mechanisms of maltitol. Compared to dipentaerythritol, commonly used in the PVC industry, maltitol as an auxiliary stabilizer exhibits better improvement in thermal stability. This improvement is related to its melting point, ability to complex with zinc chloride, and content of hydroxyl groups. Furthermore, the addition of maltitol in PVC not only maintains good transparency of PVC basically unchanged but also improves the mechanical properties. Maltitol, as a natural, eco-friendly, and efficient auxiliary thermal stabilizer, exhibits a promising application prospect in PVC materials.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Liu Yang,Ruotong Li,Jiqing Zhang,Tao Zou,Xuekun Sui,Hongfan Huang,Yuhui Du,Enze Zhu,Xiaohui Guan,Haihui Yu,Penggang Yin,Guangsheng Wang
New-type and high-quality cathodes are of immense importance for the development of aqueous zinc-ion batteries (AZIBs). Herein, a core-shell structural iron-based metal organic framework (MIL-88) derived cathode (ZnFe 2 O 4 /Fe 3 O 4 /C@NC/Mo 2 TiC 2 T x ) with admirable specific capacity, rate performance, and cycling stability has been firstly designed and prepared. The in-situ adulterated Zn and loaded Mo 2 TiC 2 T x MXene could effectively modulate the electron distribution, facilitating the electron transfer from Fe and Zn to O atoms, which dramatically decrease the adsorption Gibbs energy for charge carriers and improve the electrical conductivity, leading to fast electrochemical kinetics. Moreover, the structural and chemical stability of the composites could be greatly improved by integrating MIL-88 derived doped carbon, polydopamine derived N-doped carbon coating, and MXene substrate. In addition, the unique core-shell and two dimensional/three dimensional hierarchical structure could provide plentiful active sites and optimize the charge storage kinetics. The synthesized electrode exhibits more excellent specific capacity of 467.9 mAh·g −1 than that of Fe 3 O 4 /C (143.5 mAh·g −1 ), Fe 3 O 4 /C@NC (166.4 mAh·g −1 ), and ZnFe 2 O 4 /Fe 3 O 4 /C@NC (225.6 mAh·g −1 ), as well as eminent rate performance and cycling stability. Additionally, the improved electrochemical performance and charge storage mechanisms of the cathode are revealed by characterizations, theoretical calculations, and simulations. The high-quality cathode and its designed strategy proposed in this study would promote the development and commercialization of AZIBs.
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PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Kanglin Yu,Yuanyuan Xiao,Shiqi Hu,Xufan Zheng,Bowen Gao,Jingjing Xu,Zongzhe Li,Ruike Zhou,Yaowen Hu,Qingliang You,Biao Xiao,Renqiang Yang
Quantum dot (QD) based luminescent solar concentrator-organic photovoltaic (LSC-OPV) systems demonstrate significant potential in applications including building-integrated photovoltaics (BIPV). In this study, eco-friendly Ag–In–S/Zn–S QDs with a high photoluminescence quantum yield (PLQY = 73 %) are synthesized using a simple hydrothermal method. The influence of Zn-S precursor reactivity on QD properties is studied. The synthesized QDs exhibit excellent stability over a wide temperature range (90–360 K). The Ag–In–S/Zn–S LSCs maintain over 90 % of their initial PLQY after a two-month exposure to natural sunlight. Additionally, the power conversion efficiency (PCE) of the fabricated LSC-OPV system reaches 1.00 % under near-actual condition (9 mW cm −2 ). Moreover, when the irradiation intensity is further decreased to 0.4 mW cm −2 , the LSC-OPV system shows a PCE as high as 5.27 %, demonstrating that the LSC-OPV system can operate efficiently at low illumination intensities. Notably, the fabricated LSCs have minimal impact on the incident sunlight spectrum, making them suitable for BIPV applications. Thus, this study is a first that is known to report the integration of eco-friendly QD-based LSCs with organic photovoltaic cells, which positively contributes to the advancement of BIPV.
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高影响因子
Carbon Energy
·
2025
·
IF 24.2
Jiangchang Chen,Chuntao Yang,Yao Dong,Ya Han,Yingjian Yu
Rechargeable Zn/Sn-air batteries have received considerable attention as promising energy storage devices. However, the electrochemical performance of these batteries is significantly constrained by the sluggish electrocatalytic reaction kinetics at the cathode. The integration of light energy into Zn/Sn-air batteries is a promising strategy for enhancing their performance. However, the photothermal and photoelectric effects generate heat in the battery under prolonged solar irradiation, leading to air cathode instability. This paper presents the first design and synthesis of Ni 2 -1,5-diamino-4,8-dihydroxyanthraquinone (Ni 2 DDA), an electronically conductive π-d conjugated metal–organic framework (MOF). Ni 2 DDA exhibits both photoelectric and photothermal effects, with an optical band gap of ~1.14 eV. Under illumination, Ni 2 DDA achieves excellent oxygen evolution reaction performance (with an overpotential of 245 mV vs. reversible hydrogen electrode at 10 mA cm −2 ) and photothermal stability. These properties result from the synergy between the photoelectric and photothermal effects of Ni 2 DDA. Upon integration into Zn/Sn-air batteries, Ni 2 DDA ensures excellent cycling stability under light and exhibits remarkable performance in high-temperature environments up to 80°C. This study experimentally confirms the stable operation of photo-assisted Zn/Sn-air batteries under high-temperature conditions for the first time and provides novel insights into the application of electronically conductive MOFs in photoelectrocatalysis and photothermal catalysis.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Shizhe Chen,Weinan Dong,Weisong Zhao,Wen Qiang,Xiangxiang Chen,Bao Guo,Kaixi Jiang
Germanium is one of the strategic scattering metals, and recovering a minor concentration of scattering metals from zinc concentrate’s leaching solution is an essential resource worldwide. Practically, neutralizing precipitation and the subsequent dissolution are implemented to enrich scattering metals from zinc leaching solution, facilitating further extraction of Ge and others. Silicon poses significant challenges to the efficient extraction of Ge due to their similar chemical property and the inert nature of silica. However, the evolution of the Ge occurrence state, especially its relationship with Si, during the precipitation and dissolution process in zinc hydrometallurgy is unclear, and there is a lack of an effective method to separate Si/Ge. This paper started with a detailed characterization and leaching behavior of Ge-enriched residue obtained from the plant, followed by a systematic investigation of Ge behavior in synthetic Si/Ge binary and Fe/Si/Ge ternary systems. Eventually, options for Ge enrichment from zinc leaching solution and Si/Ge separation are recommended, providing a practical framework for mitigating the negative influence of Si on the extraction of Ge in zinc hydrometallurgy. The significant findings are that Ge/Si are both presumably co-adsorbed by Fe(OH) 3 colloids upon neutralization to pH 5 of zinc leaching solution, which could be acid redissolved at the unrealistically high liquid-to-solid ratio of 200/1 at the practically meaningful liquid-to-solid ratio of 5/1, Si concentration is high enough to quickly condense and polymerize, resulting the formation of silica precipitate and permanent encapsulating of Ge into silica; interestingly, the Si-O-Ge bonding becomes weakened with pH increasing up to alkaline region and Ge leaching rate exceeding 80% at pH 10, effectively separating Ge from SiO 2 .
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
He Wang,Han Wang,Hui Zhao,Qun Yan
A novel biochar composite impregnated with α-Fe 2 O 3 in hierarchical porous structures (Fe(III)-ABC-20) was synthesized by means of pyrolysis combining with KOH activation using the yearly bloomed Taihu blue algae as resources. It was found that the biochar activated by KOH obtained the specific surface area of 1657.8 m 2 g −1 , nearly 92.6 times larger than that of the biochar without modification (17.9 m 2 g −1 ). Meanwhile, abundant oxygen-containing functional groups such as COOH, OH, etc. are introduced onto the surface of algae biochar. Besides, Fe(III) was successfully loaded onto the porous structure of biochar from combined characterization of XRD, SEM, TEM, FTIR and XPS. Under the optimized operating conditions of pH at 6, Fe(III)-ABC-20 and H 2 O 2 dosage of 0.5 g and 20 mM, adsorption equilibrium and Fenton-like reaction time at 20 and 60 min respectively, the biochar composite exhibited 98.87% removal rate of chelated nickel in electroplating wastewater. Moreover, the catalyst exerted better stability after four repeated experiments, as which still remained 93.26% of nickel removal. Meanwhile, electrochemical measurements revealed the presence of ligand to metal charge transfer (LMCT), indicating the promoting of Fenton-like reaction. Noticeably, degradation pathways of N,N,N′,N′-Tetrakis(2-hydroxypropyl) ethylenediamine (EDTP), one of the main complexing agents according to the component identification using mass spectrum within electroplating wastewater are proposed. EDTP might be first degraded to 2-hydroxypropanal or 2-Aminoethyl(ethyl) amine, then further degraded to acetaldehyde or ethylene, and finally oxidized to CO 2 and H 2 O. Therefore, the biochar composite developed here could provide a novel route for the resource utilization of blue algae and heavy metal removal in electroplating wastewater containing refractory complexing agent.
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高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Na Li,Miao Wang,Chaohui Yuan,Xiaoqing Ma,Wei Zhao,Xinyi Zhang,Yuqi Meng,Yuqian Fan,Shengxue Yu
In this work, Zn anode with a high compatibility to seawater system is fabricated on stainless steel mesh using an ultra-simple in-system synthesis technique. Physical characterizations reveal that the film electrode is composed by cross-linked Zn nanoflakes structure with outstanding adhesion and mechanical deformation tolerance. Being adopted as seawater-compatible anode, the as-synthesized Zn electrode exhibits a high reversible capacity of 30 mAh cm −2 with obvious advantages such as outstanding rate capability, strong tolerance to real-time varied current, low capacity decay, and good long-term cycling stability. The assembled Zn-air battery performs a maximum energy density of 285 Wh m −2 and successfully lights up various electronic devices. Furthermore, the self-regulation working mechanism and the growth kinetic of Zn electrode are further investigated using in-situ optical microscopy observations and in-situ electrochemical impedance spectroscopy (EIS) techniques. This work demonstrates a promising feasibility for fabricating highly reversible and low-cost Zn electrode in seawater system aiming to large-scale energy storage.
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高影响因子
Inorganic and Nano-Metal Chemistry
·
2021
·
IF 1.716
Jiahua Guo,Yuqi Zhang,Shouwen Jin,Xiaoyun Ye,Kaikai Hu,Weiqiang Xu,Daqi Wang
Eight organic-inorganic hybrid salts [(HL1)(SbCl4)] (1) (L1 = N,N-dimethylbenzylamine), [(HL2)2(ZnCl4)] (2) (L2 = 4-chlorobenzylamine), [(HL2)(L2)(CuCl3)(H2O)2] (3), [(HL3)2(Sb2OCl6)] (4) (L3 = quinoline), [(HL4)4(Bi2Cl10)] (5) (L4 = 2-methylquinoline), [(HL5)(SbCl4)] (6) (L5 = 5,7-dimethyl-1,8-naphthyridine-2-amine), [(H2L6)(SbCl5)] (7) (L6 = 3,6-bis(imidazol-1-yl)pyridazine) and [(H2L7)2(CuBr4)2] · 7H2O (8) (L7 = di(2-benzimidazol-1-ylethyl)ether) were prepared and characterized by IR, XRD, EA and TG analysis. XRD analysis told that all of the complexes were 3 D net built from non-covalent bonds from the cations and the halometallates. The aryl rings of the cations in all of the compounds are essentially planar. The H2O also had crucial role in structure extension in 3 and 8. Extensive intermolecular interactions have been used in the self-assembly of diverse motifs, ranging from strong N-H···X (X = Br, Cl), N-H···O, N-H···N, O-H···O, O-H···Br H-bonds to weak CH2···O, CH3-Cl/CH2-Cl/CH-Cl, Cl-Cl, O-Br, CH3-π, CH2-π, Cl-π and π-π associations. The arrangements of the anions and cations in the solid are ruled not only by the size and symmetry of the cations, but also by the non-covalent bonds in the crystal structures.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 8
·1-11
·
IF 2.8
Yang Zhengyu,Jin Wan
The great attention of rechargeable Zn-air battery has motivated extensive research on the development of inexpensive, highly efficient, and robust noble-metal-free bifunctional catalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). In this work, Mn-N-C-950 single-atom catalyst with biomass aerogel as precursor was successfully synthesized. The resulting Mn-N-C-950 exhibited excellent bifunctional catalytic performance for ORR ( E 1/2 = 0.843 V) and OER ( E j=10 = 1.56 V) in alkaline electrolytes, which can compete with previously reported bifunctional electrocatalysts. In addition, compared to the Pt/C + RuO 2 mixed catalyst, this bifunctional catalyst can endow the self-made zinc-air battery with better power density (114.1 mW/cm 2 ) and cycle stability (105.5 h), demonstrating its potential feasibility in practical applications of rechargeable metal air batteries.
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高影响因子
Food Quality and Safety
·
2025
·
IF 4.4
Lu Xinghua,Liu Suqi,Zhang Lu,Wang Chenglong,Wang Zhenhe,Pang Linjiang,Lu Guoquan,Cheng Jiyu,Chen Wei,Guan Yuge
Citronellol is a kind of terpene produced by plants in response to external stress, thus can be used as a gas biomarker to detect black spot Ceratocystis fimbriata infection in sweetpotato. However, many contemporary analytical methods, exemplified by gas chromatography-mass spectrometry (GC-MS), are technically demanding, time-consuming, and require complex sample preparation procedures. In this study, a quartz crystal microbalance (QCM)-based gas sensor fabricated via a surface molecular imprinting technique was modified with a Co/Zn-ZIF@MIP composite, in which cobalt-zinc bimetallic ZIF (Co/Zn-ZIF) served as the support material. A linear relationship was observed between the frequency shift and citronellol concentrations ranging from 0.88 to 22 mg/L, with a sensitivity of –6.08 Hz/(mg·L) and a limit of detection (LOD) of 1.35 mg/L. This result indicated that this sensor has excellent selectivity for citronellol and demonstrates high repeatability, as evidenced by R² value of 0.97. In evaluations with real samples, the sensor reliably identified citronellol among the complex volatile organic compounds (VOCs) emitted from black spot-infected sweetpotato, indicating a high level of selectivity. Our research achieved the rapid characterization of sweetpotato black spot disease within 4 min and provided new insights into the development of QCM-based gas sensors for the rapid assessment of agricultural product quality and safety.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Lihui Xiao,Yaqiang Li,Peixia Yang,Qiang Lv,Xiangyu Lu,Hao Xu,Ruopeng Li,Huiling Zhang,Shengbo Yang,Anmin Liu,Dan Wang,Jinqiu Zhang,Maozhong An
Carbon nanotubes' (CNTs) preparation and formation mechanisms are of great interest. To improve their performance in the oxygen reduction reaction (ORR), a post-treatment to add active centers is required. This study presents a simple method using a molten-salt template to self-assemble bamboo-shaped CNTs (B-Fe-N-C) with highly stable Fe-N 4 (Fe-pyridinic-N 4 ) sites. By analyzing the evolution of high-temperature materials and the intermolecular bonding process, the formation mechanism of B-Fe-N-C follows a two-dimensional material synthesis--bonding--self-assembly--growth mechanism. Impressively, B-Fe-N-C exhibits superior ORR performance (a half-wave potential of 0.868 V) and stability (only 3 mV attenuation after 10000 cycles of accelerated durability test) in alkaline medium. Density functional theory calculations demonstrate that Fe-Pyridinic-N 4 sites can lower the energy barrier for ORR. Furthermore, Comsol multiphysics simulations confirm the significant enhancement of oxygen mass transfer by bamboo-shaped B-Fe-N-C. Therefore, B-Fe-N-C is employed in zinc-air batteries, resulting in nice discharge performance and high peak power density.
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高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Tiao Huang,Shenglin Wang,Jingyi Wu,Hui Hu,Jianyi Wang,Xiaosong Zhang,Yanan Gao
Aqueous zinc–iodine (Zn–I) batteries show a great development potential in the field of energy storage due to their advantages of low cost, high safety and ecological friendliness. However, Zn dendrite growth and shuttle effect of polyiodide seriously aggravate the self-discharge behavior and thus decrease the cycle life of batteries . Therefore, controlling the diffusion of zinc ion and inhibiting soluble polyiodide in the separator are the most effective strategy to extend the lifespan of batteries. Herein, we design and prepare a multifunctional Janus separator composed of a covalent organic framework (COF) layer, a commercial glass fiber (GF) substrate and a graphene (Gr) layer to achieve durable Zn–I batteries. The COF layer features abundant polar groups and uniform open-channel mesopores enabling homogeneous Zn 2+ flux and simultaneously inhibiting polyiodide species migration. The highly conductive Gr layer can not only load iodide but also effectively activate the redox kinetics of iodine species. The full cell assembled with the TTA-DHTPA-COF@GF@Gr Janus separator demonstrated a recorded energy density of up to 6.4 mA h·cm −2 at a high current density of 20 mA cm −2 in aqueous Zn–I batteries. The design of the multifunctional Janus separator provides a new insight into separator engineering for durable Zn-ion batteries.
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高影响因子
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