CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Lei Tan,Zhao Li,Lei Wang,Yu Shang,Zhiguo Wang,Zhengwang Tong,Yan Li,Xiangming Li
Layered vanadium oxide materials exhibit significant multielectron redox reactions and regulatable transfer channels for Zn 2+ insertion/extraction in rechargeable aqueous zinc-ion batteries (AZIBs). However, vanadium dissolution poses a severe challenge to achieving stable performance in AZIBs. In this work, we report an in-situ polymerization of polyaniline (PANI) on ZnV 2 O 4 (ZVO) materials, resulting in a cross-interlocked nanosheet morphology to inhibit vanadium dissolution. The high conductivity and unique π-conjugated structure of PANI effectively weaken the electrostatic interactions between Zn 2+ and the V-O layers, thereby enhancing the diffusion of Zn 2+ at the electrode material interface, suppressing the vanadium dissolution of ZnV 2 O 4 and stabilizing its structure framework. Concurrently, density functional theory (DFT) calculations further confirm that PANI can significantly modulate the electronic properties of the ZVO matrix. PANI forms robust hydrogen bonds with ZVO, resulting in an abundance of free Zn ions within the system, which accelerates electron/ion transfer kinetics, thereby enhancing the efficient storage performance of Zn 2+ and increasing specific capacity. The ZVO@PANI composite electrode exhibits high specific capacity (706.4 mAh g −1 at 0.1 A g −1 ), remarkable rate capability (350.2 mAh g −1 at 5 A g −1 ), and robust cycling performance. This study provides a reasonable strategy for designing high-performance cathode materials for aqueous zinc-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Longlong Zeng,Xiaoyan Li,Yinjie Chen,Haiping Yu,Zaisheng Cai
Anti-fogging is crucial to applications in harsh cold environment, for which ensuring the clear sight for people and the accuracy of certain precise instruments. Although there have been some studies on frost-resistant coatings in recent years, the duration of their anti-fogging under frost conditions is not long, and the complexity of the preparation process also makes it difficult to put them into practical use. In this paper, anti-fog coatings with good anti-fog and durability properties are prepared in a one-step process using hydroxy propyl methyl cellulose (HPMC), hydroxy ethyl cellulose (HEC), and anhydrous ferric chloride (FeCl 3 ) as materials. The raw materials of the coating and the preparation process are green and environmentally friendly. The light transmittance of the coated glass can exceed 90 % under the harsh fogging environment. The hydrogen-bond effects impart the anti-fogging coating durability for continuous anti-fogging under harsh environments, such as 3000 cycles fabric abrasion and one-year-long term frosting at −20 °C. The presented anti-fogging strategy can be used in daily scenarios and have great application prospects in severe cold environments.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
·
2020
·
IF 1.701
Mengyuan Ma,Jian Song,Lichen Bai,Guan Wei,Jianfeng Dai,Zhiyun Chen,Tianxiang Yin
The extraction of bovine serum albumin (BSA) was carried out by using reverse micelles formed by cationic surfactant dodecyltrimethylammonium bromide (DTAB), N-dodecyl-N-2-hydroxyethyl-N,N-dimethyl-ammonium bromide (HDAB) and N-dodecyl-N,N-2-dihydroxyethyl-N-methyl ammonium bromide (DHAB). The factors like pH, surfactant concentration, salt concentration, and co-solvent concentration were investigated. The good maintenance of the secondary structure of BSA after extraction was confirmed by UV spectra. A wider aqueous phase pH range was achieved and less amount of surfactant was needed on efficient forward extraction when hydroxyethyl group was presented in the surfactants’ head group, suggesting an important role of H-bonding effect. At lower pH or high salt concentration, reasonable backward extraction efficiencies were observed in all systems. The little difference of the head group of these surfactants resulted in quite different performance in the extraction process, which provided deeper insight on the effect of fine adjustment of surfactant structure on protein extraction.
研究领域:
生物化学
·
蛋白质工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2018
·
IF 6.434
Jing Zhang,Juncong Li,Huiyu Su,Ying Zhao,Xiang Zeng,Maohua Hu,Wei Xiao,Xuhui Mao
In this study, the effect of oxyanions on the photodegradation of sulfonamides by graphitic carbon nitride (g-C 3 N 4 ) was investigated. The results showed that the presence of disilicate (DS) could substantially improve the photodegradation of sulfamethazine (SMZ) in g-C 3 N 4 aqueous suspension. The primary mechanism for the enhancing effect of DS was hydrogen bonding (H-bonding) interaction. The hydroxyl groups ( OH) and bridging oxygen (Si O Si) of DS can form H-bonds with the amine groups of g-C 3 N 4 particles and sulfonamides, therefore soluble DS can act as a bridge to enhance the transfer and adsorption of SMZ onto the surface of g-C 3 N 4 particles. The presence of DS did not change the mechanism of photodegradation, but there was an optimal concentration for DS to achieve the strongest enhancing effect. H-bonding effect was also found for other oxyanions derived from weak acids, such as silicate, dihydrogen phosphate and borate ions, because the partial ionization of these oxyanions allowed the existence of hydroxyl groups to form H-bonds. The present study not only deepens our understanding of the interface process of the photodegradation of sulfonamides in g-C 3 N 4 aqueous suspension, but also provides a potential method to enhance the photocatalytic degradation of antibiotics in wastewater streams.
研究领域:
环境科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Ming Gao,Yu Liu,Su Ma,Sai Mai,Xuedong Wang,Yanyan Li
Herein, two kinds of quaternary ammonium polymeric ionic liquids (PILs) were prepared and rigorously characterized based on SEM, FT-IR and 1H NMR data. The PIL-based effervescence-enhanced dispersive solid-phase extraction (PILE-d-SPE) method was developed based on effervescent tablets containing PILs as extractants, tartaric acid as acid source, NaHCO3 as alkaline source, and water-soluble starch as filler. The positive charges on the surface of PILs and the negative charges on the surface of sulfonamide antibiotics (SAs) exhibited significant electrostatic attraction, thereby enhancing interactions between two PILs and SAs. P[VBTHEA]Cl exhibited higher extraction efficiency for five SAs than P[VBTEA]Cl, possibly because the structure of P[VBTHEA]Cl contained more -OH functional groups compared to P[VBTEA]Cl. Before and after extraction, the FT-IR spectra of the two PILs were significantly different from the O-H and C-H stretching-vibration peaks. DFT calculations show that the strong hydrogen bonds formed between P[VBTHEA]Cl and SDM, resulting in the highest binding energy and, consequently, the highest SDM extraction recovery rate. Overall, the H-bonding induction effect was inferred to be the main reason for the superiority of P[VBTHEA]Cl over P[VBTEA]Cl in extraction efficiency. By the one-factor-at-a-time approach, several important variables were optimized for determining SAs in reclaimed waters as follows: 200-mg PILs as extractant, 400-µL acetone as elution solvent, and 5-min elution. By integration with HPLC-DAD detection, this approach provided satisfactory analytical performance: low detection limit (0.19-0.32 μg/L) and appropriately fortified recovery (78.4-99.7%) for five SAs. Consequently, the P[VBTHEA]Cl-based E-d-SPE method presents environmental friendliness, time-saving, easy operation, and excellent analytical performance.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）