JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 28
·e52621
·
IF 3.057
Xiao-Qiong Cheng,Wei Liu,Chun Zhang,Xiao-Cheng Chen,Shu-Qian Duan,Hai Fu
In recent years, the problem of oily sewage has seriously affected the ecological environment and human health. Thus, we prepared a novel biodegradable poly (lactic acid) (PLA) membrane with antibacterial property and oil–water separation function via electrospinning method. First, the matter of silver ion glass microbeads (AgGB) loaded with layered double hydroxides (LDHs) and the LDH@AgGB modified with 3-triethoxysilyl-1-Propanamine (APTES) were synthesized. Then, the LDH@AgGB were blended with PLA to prepare PLA/LDH@AgGB composite. And the PLA nanofibrous membranes were electrospun. The results showed that APTES could significantly improve the dispersion and compatibility of LDH@AgGB in PLA matrix. The addition of A-LDH@AgGB could greatly improve the crystallinity, and control the porosity and pore-size of PLA membranes. The maximum water contact angle of the PLA membranes could reach to 109.31°, while the oil contact angle of the PLA membranes decreased to 0° resulting in a high oil absorption capacity, and fast oil absorption rate performance. Meanwhile, the PLA membrane had efficient antibacterial property against Escherichia coli . The reported novel LDH@AgGB and its PLA composite membrane provided a method for designing and preparing environmental-friendly, high-performance materials with both excellent antibacterial property and oil–water separation.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2022
·
IF 7.613
Y. Chen,M. Yang,Y. Jia,P. Yan,F. Chen,J. Qian,L. Xu,H. Li
Photoelectrochemical (PEC) aptasensor based on photoactive species with remarkable and stable PEC response is a rising analytical method to implement highly efficient and sensitive detection of residual antibiotics in the field of food. Herein, NiS 2 /NiFe-layered double/graphitic carbon nitride (NiS 2 /NiFe LDH/g-C 3 N 4 ) ternary heterostructure designed by the surface vulcanization of flower-like NiFe LDH/g-C 3 N 4 was used for developing a label-free PEC aptasensing platform to detect enrofloxacin (ENR). The introduction of NiS 2 with narrow bandgap can strengthen the light harvesting of solar energy, producing large amounts of photoinduced carriers. NiS 2 as the electrons conduction bridge further accelerates the transmission efficiency of electrons in contrast to binary heterojunction, endowing ternary heterostructure with superior photocurrent signal. A label-free PEC aptasensor detected ENR with an amplified detection signal because of the oxidation of ENR molecules by photoinduced holes. This PEC aptasensing platform of ENR manifested a wide detection range from 3.6 × 10 −7 to 30 ng/mL with a low detection limit of 1.2 × 10 −7 ng/mL as well as can provide a sensitive and stable analysis with feasible application to monitor milk and honey samples. This design can open the utilization of ternary heterostructure by surface vulcanization to improve the sensitivity of PEC aptasensing platform for monitoring environmental pollutants.
✓ 已验证
产品关联
DOI
高影响因子
Biomaterials Science
·
2022
·Vol. 10
·期 5
·1317-1325
·
IF 7.59
Bengao Zhu,Xuefei Lv,Mengmeng Zhang,Huiying Wang,Senbin Chen,Jintao Zhu
Integrating magnetic resonance imaging (MRI)-targeted diagnosis with synergistic cascade treatments, such as chemo/chemodynamic therapy (CT/CDT), is highly desired for promoting the antitumor performance; however, the rational design of such “all-in-one” nanomedicine is still in its infancy. In this report, using MnO2 coated layered dihydroxide (LDH) as a carrier to load chemotherapy molecule 5-flurouracil (5-FU), a novel tumor microenvironment (TME) regulating nanodrug is formed: LDH/5-FU@MnO2. Combined guidance of CT/CDT and MRI is used to realize synergistic diagnosis and enhanced anti-tumor efficacy. MnO2 is converted into Mn2+ in the presence of reducing agent GSH, the in situ generated Mn2+, not only serves as the chemical fuel for the Fenton reaction, combining H2O2 depletion and ˙OH generation, but can also be used as a nuclear magnetic contrast agent for MRI. Moreover, the tumor acidic environment is able to trigger 5-FU release for initiating chemotherapy in the tumor zone. This “all-in-one” LDH/5-FU@MnO2 nanomedicine integrating multiple treatment modalities and magnetic resonance imaging properties, causes persistent modulation of the TME and exhibits effective antitumor theranostic performance. Such a sophisticated nanomedicine design not only achieves improved CT/CDT antitumor efficiency, but also realizes the activatable magnetic resonance imaging. This strategy combines the merits of each treatment, significantly enhancing the anticancer efficacy, and is anticipated to display promising potentials in the clinical translation plans.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CLAY SCIENCE
·
2022
·
IF 5.907
Jing Ni,Jie Wang,Shujun Zhao,Fei Zhong,Ting Qu,Fuqiang Hu,Hai Liu,Chunli Gong,Sheng Wen
An optimal trade-off between ionic conductivity and mechanical properties is critical for ensuring high-performance applications of anion exchange membranes (AEMs). Herein, a bifunctional porous substrate with a nanoarchitecture morphology was prepared; it comprised a two-dimensional (2D) inorganic hydroxide ion conductor (layered double hydroxide, LDH) anchored on three-dimensional natural bacterial cellulose (BC) nanofibers (LDH@BC) and served as a strong reinforcing framework as well as an ion transport medium. The obtained LDH@BC can effectively prevent the layer stacking of LDH caused by space limitations and regulation functions of the BC fiber substrate, thus providing space for the inherent anion-transport ability of LDH. After quaternized chitosan (QCS) impregnation, the composite membrane showed a high OH − conductivity of 42.54 mS cm −1 (80 °C), while the conductivity of the QCS/BC membrane was only 27.90 mS cm −1 . More importantly, owing to the synergistic reinforcing effect of LDH@BC, the mechanical strength of the resultant composite AEMs increased sharply to 64.3 MPa, which was nearly 2.5 times higher than that of the pure QCS membrane (only 18.4 MPa). Benefiting from the simultaneously improved anion conductivity and mechanical strength, the QCS-filled LDH@BC composite membrane demonstrated a superior peak power density of 84.2 mW cm −2 , while for the fuel cell based on QCS/BC, this value was only 48.0 mW cm −2 .
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CLAY SCIENCE
·
2021
·
IF 5.467
Qiuxiang Wang,Zongxue Yu,Yuchuan Liu,Ximei Zhu,Runxuan Long,Xuyang Li
In this project, the Titanium dioxide nanowire (TiO 2 Nw) and layered double hydroxide (LDH) were introduced into the reduced graphene oxide (RGO) to make a composite material and then were assembled on the cellulose acetate (CA) membrane into photocatalytic composite membrane (RLT) through vacuum filtration with photocatalytic effect. The photocatalytic composite membrane (RLT) with high permeability and high rejection was constructed. Compared with other ratios of RLT membranes, RLT-0.5 composite membrane had a higher water flux of 432.38 L·m −2 h −1 bar −1 , and the rejection rate of dye were above 99%. In the rejection process of 10 cycles, that the rejection rate and flux of RLT-0.5 composite membrane to methylene blue (MB), malachite green (Mg) and Congo red (CR) were more stable regardless of whether there was light or no light. Of course, the rejection effect was better under light conditions, showing its excellent photocatalytic performance. In conclusion, RLT-0.5 composite membrane had excellent water purification ability and photocatalytic efficiency, which made it have a wide application in water treatment.
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Materials
·
2021
·
IF 3.515
Han Xing,Hu Jia,Wang Yong-Qin,Xiao Tian-Bing,Xia Wei,Chen Yan-Ning,Wu Liang
A super-hydrophobic anti-corrosion film was facilely prepared via in situ growth of layered double hydroxides (LDHs) on the etched AZ31 magnesium alloy and then modification by 1H, 1H, 2H, 2H-perfluorooctyltrimethoxysilane (PFOTMS) in this work. The morphology, structure, composition, surface roughness and water contact angles (WCA), and the anti-corrosion performance of the samples were investigated. The results revealed that the micro/nano hierarchical surface morphology of the films was composed of island structures obtained after chemical etching and MgAl-LDH nanowalls grown in situ. The best hydrophobicity (CA = 163°) was obtained on the MgAl-LDHs with the maximum surface roughness. Additionally, the potentiodynamic polarization, electrochemical impedance spectroscopy, and immersion test indicated that the super-hydrophobic LDH films provided better corrosion resistance to AZ31 magnesium alloy due to the double-protection derived from the LDHs and super-hydrophobic properties. Furthermore, the contact angle could be kept at above 140° after dipped in 3.5 wt% NaCl solution for 6 days.
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2021
·
IF 5.062
Huayan Zheng,Nilesh Narkhede,Guoqiang Zhang,Huacheng Zhang,Lina Ma,Shirui Yu
The small amount of promoter has shown increase in the methanol formation rate by several folds. Hence, hydrotalcite having sufficient trivalent cations are preferred; however, traditional coprecipitation route often leads to poor Cu dispersion owing to higher cationic charge in the layered structure that result in aggregation of the sheets. The present paper reports synthesis of porous, nanostructured Cu/ZnO/Ga 2 O 3 catalysts from pure phase hydrotalcite precursors by using aqueous miscible organic solvent treatment method. The 20% Ga containing catalyst showed ca. 2.5-fold increase in both surface area and % dispersion of the exposed Cu as compared to that prepared from standard coprecipitation method with similar composition. The stabilization induced by mutual dispersion of Cu, Zn and Ga components in the exfoliated sheets resulted in confinement of the Cu particle size up to 5 nm in the spent catalyst. The best performing catalyst of the series, Cu 0.4 Zn 0.4 Ga 0.2 -LDO exhibited STY of 762 mg•g Cat −1 •h −1 for methanol formation from syngas which was decreased by only 8.6% during 50 h of the reaction on stream. Further, it was revealed that, Ga is more conductive to stabilization of Cu as compared to Al, resulting in 23% higher methanol formation rate as compared to the Al containing catalyst.
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Dongdong Wang,Lili Liu,Yue Liu,Wenhao Luo,Yaojia Xie,Tiantao Xiao,Yinhu Wang,Zhihui Song,Heng Zhang,Xindong Wang
The lack of highly efficient and long-term stable catalysts for the oxygen evolution reaction (OER) severely hampers the advancement of alkaline seawater electrolysis. Herein, a hierarchical superaerophobic OER catalyst electrode, FeOOH/CoFe layered double hydroxide (FeOOH/CoFe LDH), has been prepared on nickel foam through a one-step hydrothermal reaction as an efficient OER catalyst for alkaline seawater electrolysis. The hierarchical nanostructure provides abundant active sites for the catalyst; the superaerophobic property ensures sufficient contact between the catalysts and the electrolyte, and the interaction between FeOOH and CoFe LDH further enhances the OER activity. The FeOOH/CoFe LDH catalytic electrode exhibits remarkable OER performance in simulated seawater solution (1.0 M KOH + 0.5 M NaCl). Specifically, at an industrial current density of 400 mA cm–2, the overpotentials are just 320 mV at 25 °C and 257 mV at 60 °C. Meanwhile, after 300 h of stability testing at a current density of 100 mA cm–2, the overpotential of the electrode increases by a mere 19 mV. This work will afford a simple approach for designing effective electrodes for alkaline seawater electrolysis.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Jie Yang,Ren Wang,Jinsheng Sun,Yuanzhi Qu,Han Ren,Zhiliang Zhao,Pingquan Wang,Yingying Li,Luman Liu
In deep-formation drilling, effective filter loss control in ultrahigh-temperature conditions and high-salt conditions faces challenges. Comb polymer/LDH composites (P-LDH) with partially intercalated and partially exfoliated structures were prepared by in-situ polymerization as fluid loss materials. A series of characterization results showed that the P-LDH composites were successfully synthesized. P-LDH had partially intercalated and partially exfoliated structures and excellent thermal stability. In addition, the rheological evaluation results showed that P-LDH had a low viscosity effect while maintaining the rheological properties of the drilling fluid. P-LDH can significantly reduce the filtrate loss of drilling fluids at ultrahigh temperatures and high salt concentrations. At 240 °C and 15 wt% NaCl, the filtration loss was only 6.3 mL, and the high-temperature and high-pressure filtration loss was only 29.6 mL. Through the analysis of drilling fluid particle size and filter cake microstructure, based on hydrogen, ionic bonds, and intercalation effects, P-LDH acted closely with bentonite to promote stable dispersion, improve the drilling fluid’s stability, and form a dense filter cake to reduce the filtration loss. Therefore, P-LDH has broad application prospects in ultrahigh-temperature and high-salinity formation drilling.
✓ 已验证
DOI
高影响因子
Surfaces and Interfaces
·
2023
·
IF 6.2
Jing Xu,Qian Li,Xinyu Liu,Qian Yang
S-type heterojunction is a new type of photocatalytic heterojunction that can efficiently enhance the performance of photocatalytic hydrogen-producing. In this paper, NiAl-LDH/P-MoO 3 composite catalysts were prepared, NiAl-LDH, P-MoO 3 and NiAl-LDH/P-MoO 3 were characterized, tested and analyzed from the aspects of morphology, structure and spectrum. The 5 h hydrogen-producing amount of NiAl-LDH/P-MoO 3 reaches 298.72 μmol, which is 160 times and 16 times that of MoO 3 and NiAl-LDH under the visible light , respectively. The doping of P narrows the band gap of MoO 3 and is more helpful to the electronic transmission. The irregular P-MoO 3 nanorods with a diameter of about 200 nm are attached to 3-4 μml NiAl-LDH nanoflower . The construction of S-type heterojunction changes the electronic transmission pathway of NiAl-LDH/P-MoO 3 while improving the electron-hole pair separation ratio of NiAl-LDH/P-MoO 3 . The strong oxidizing ability of P-MoO 3 and the strong reducing ability of NiAl-LDH are retained. Effective control of electronic transmission path improves the photocatalytic hydrogen-producing activity and stability of NiAl-LDH/P-MoO 3 , which provides a certain theoretical support for the realization of photocatalytic high-efficiency HER by constructing heterojunction.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·
IF 13.3
Hualin Jiang,Yunjie Yu,Xueqing Duan,Pinghua Chen,Shuai Wang,Xianhua Qiu,Long Ye,Xinman Tu
The rational design of inexpensive metal electrocatalysts with exciting catalytic activity for overall water splitting (OWS) remains a significant challenge. Heterostructures of NiFe layered double hydroxides (NiFe-LDHs) with abundant oxygen defects and tunable electronic properties have garnered considerable attention. Here, a self-supporting heterostructured catalyst (named MoO 3 /NiFe-NF) is synthesized via a hydrothermal method to grow NiFe-LDH with oxygen vacancies (O V ) in situ on inexpensive nickel foam (NF). Subsequently, MoO 3 is anchored and grown on the surface of NiFe-LDH by electrodeposition. The obtained catalysts achieved outstanding oxygen/hydrogen evolution reaction (OER/HER, 212 mV/85 mV@10 mA cm −2 ) performance in 1 m KOH. Additionally, when MoO 3 /NiFe-NF is utilized as the cathode and anode in OWS, a current density of 10 mA cm −2 can be obtained as an ultralow battery voltage of 1.43 V, a significantly lower value compared to the commercial electrolyzer incorporating Pt/C and IrO 2 electrode materials. Finally, density functional theory (DFT) calculations and advanced spectroscopy technology are conducted to reveal the effects of heterojunctions and O V on the internal electronic structure of the electrical catalysts. Mainly, the present study provides a novel tactic for the rational design of remarkable, low-cost NiFe-LDH electrocatalysts with heterostructures for OWS.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Shilin Fan,Bin Zhu,Yang Zhong,Shaoqi Shi,Jian Zhang,Chunlin Chen
Biomass upgrading offers a promising approach to reducing reliance on petroleum. Furthermore, integrating biomass conversion with hydrogen evolution reaction (HER) provides a means to simultaneously produce sustainable chemicals and energy. However, achieving industrial-scale current densities at lower potentials remains a significant challenge. Drawing inspiration from the Mott-Schottky heterojunction interface and its ability to modify energy levels, this work presents a novel core-skin structure Co@NiCo-LDH catalyst synthesized through in-situ growth and corrosion engineering. The designed catalyst demonstrated remarkable performance, requiring a potential of only 1.336 V to achieve 100 mA·cm −2 in 1 M KOH electrolyte containing 10 mM HMF, and 1.615 V to achieve 1000 mA·cm −2 in the presence of 100 mM HMF. Notably, the Co@NiCo-LDH exhibited exceptional structural and catalytic stability. Additionally, it displays excellent catalytic activity for both HMF electrooxidation and HER, with a H 2 production rate of 216.3 μmol·cm −2 ·h −1 in a two-electrode cell.
✓ 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）