Surfaces and Interfaces
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2024
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IF 5.7
Hao Sun,Martin R. Tillotson,Dawei Wang,Xu Zhao
The construction of a heterojunction piezo-photocatalyst is one of the most effective strategies to accelerate charge transfer and improve catalytic performance. A novel ternary heterojunction was synthesized by introducing SnS nanoparticles (NPs) onto the surface of a NiAl-LDH/g-C 3 N 4 (LDH/CN) nanosheets via a facile hydrothermal method. The separation and transfer paths of carriers was studied for the piezo-photocatalytic degradation of tetracycline (TC), a common antibiotic, under ultrasonic and visible light irradiation. The SnS/LDH/CN piezo-photocatalyst generated a built-in electric field by the piezoelectric effect, which was beneficial for the separation of electron-hole pairs. Furthermore, the Z-scheme heterojunction endowed with a larger surface area, abundant active sites, and improved light-harvesting capacity further improved piezo-photocatalytic performance for TC. In particular, a CLS-30 (30 wt% of SnS on LDH/CN) heterojunction exhibited the highest degradation efficiency with 98.5 % removal of TC (20 mg/L) in 60 min, which was higher than that of ultrasonic vibration (38.2 %) and visible light illumination (79.4 %). TC degradation efficiency remained at almost 90 % after 4 consecutive cycles. This work provides a novel viewpoint for designing high-performance and stable heterojunction piezo-photocatalysts for energy limited wastewater remediation applications.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2024
·
IF 3.2
Wei Xia,Gui-Zhi Guo,Xue-Qian Wu,Ya-Meng Yin,Ya-Pan Wu,Shuang Li,Ruan Chi,Dong-Sheng Li
Direct methanol fuel cells (DMFCs) can permit the utilization of noble-metal-free electrocatalysts , which certainly reduces the cost and accelerates their practical implementation. With the exploration of efficient and economical methanol oxidation reaction (MOR) catalysts, Ni-based nanostructures have been recognized as the most promising MOR catalysts in alkaline media. Herein, we construct a novel heterojunction MOR electrocatalyst composed of Ni-based metal-organic framework (Ni-MOF) and NiFe-based layered double hydroxides (LDHs) through a coordination-induced self-assembly strategy. Owing to the synergic effect between Ni and Fe sites, coupled with the effect of hetero-interface, the resultant Ni-MOF/NiFe-LDH composite exhibits remarkable MOR activity in 0.1 M KOH electrolyte with the oxidation current density (32.66 mA cm −2 ) is 2.65 and 2.44 times higher than that of the primitive NiFe-LDH and Ni-MOF. The excellent stability of the Ni-MOF/NiFe-LDH electrocatalyst has also been confirmed by long-term chronoamperometry (CA) analysis. Our work paves a facile controllable way for fabricating MOF/LDH heterostructure targets on MOR and underlines its potential to boost energy conversion efficiency through the manipulation of synergic components.
研究领域:
材料科学
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电化学
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能量转换
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催化
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产品关联
DOI
高影响因子
Environmental Science-Nano
·
2024
·Vol. 11
·期 3
·1142-1156
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IF 5.8
Xiaohan Yang,Chenzhang Liu,Shuo Gao,Xiaolei Zhang,Ziwei Lan,Min Zuo,Jia Li
Micromotors capable of autonomous movement, sensitive detection and rapid removal of pollutants have attracted wide attention in environmental monitoring and water pollution remediation. In this paper, a ramie-derived hierarchical MgAl-LDH/MFZ@HRP magnetic microtube micromotor with peroxidase activity was proposed for simultaneous detection and removal of catechol from water. The Mn2O3 decomposition of H2O2 produces O2 bubbles to realize the chemical drive of the micromotor with a speed of 128.33 ± 5.012 μm s−1 (5% H2O2). Due to the high peroxidase activity and voluntary movement of MgAl-LDH/MFZ@HRP, catechol could be detected sensitively with a detection limit of 6.92 × 10−7 M. Moreover, catechol could be rapidly degraded by hydroxyl radical (˙OH) and superoxide anion (O2˙−) produced by Fenton reaction, and the degradation rate could reach 96%. This study provides a promising multifunctional micromotor for simultaneous determination and removal of organic pollutants from wastewater.
研究领域:
环境科学
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材料科学
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生物技术
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2022
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IF 9.463
Keqing Zhou,Kaili Gong,Feiyan Gao,Lian Yin
The creation of high-efficient MXene-based flame retardants to cope with the fire hazards of polymer composites remained an intractable challenge. Hence, this work explored a facile strategy to synthesize MXene-based nanohybrids (MXene@LDH) by in situ growth of layered double hydroxides (CoAl-LDH) on the surface of MXene in anticipation of constructing an efficient flame retardant system. The results indicated that the integration of LDH prevented the stacking of MXene nanosheets and enhanced the dispersion of MXene in EP matrix, endowing EP composites with excellent thermal properties and flame retardancy. With the addition of 2 wt% MXene@LDH, EP composites exhibited reduced the maximum mass loss rate (R max ) of 28.5%, increased residual char and led to 25.3% reduction in PHRR and a drop of 24.4% in THR, compared to those of neat EP. Furthermore, EP/2 wt% MXene@LDH composites also demonstrated superior smoke suppression performance, mainly reflected by the 38.5%, 37.8%, 33.8% and 31.2% reduction in PSPR, TSP, PCO and PCO 2 , respectively, together with a 52.0% decline in smoke factor (SF), compared to those of pure EP. The improved fire safety of EP composites was attributed to the catalytic charring and attenuation effect of the transition metal oxides , coupled with the barrier effect of the nanosheets and the cooling effect, gas-phase dilution effect of LDH.
研究领域:
材料科学
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高分子化学
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纳米技术
✓ 已验证
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
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2025
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IF 14.2
Muyang Shi,Lu Wang,Dong Zhang
The suboptimal multifunctionality exhibited by structural supercapacitors (SSC) can be ascribed to a range of factors, encompassing the trade-off between electrical and mechanical performance of electrolyte, an inadequate interface contact between the electrode and electrolyte, as well as sluggish ion transport in the electrode and electrolyte. Herein, a new SSC architecture is introduced. First, the molybdate-ion-intercalated NiCo-LDH electrode is prepared by a convenient hydrothermal process. Benefiting from the unique 3D flower-like structure and MoO 4 2− doping effect, the as-prepared NiCo-LDH-MoO 4 2- -1 possesses high capacitance (1937.7 F g −1 ) and reversible charge-discharge stability. Subsequently, the PVA/PAA-cement composite is prepared by constructing a dual polymer-cement interwoven network. The rich intertwined network structure endows the composite with excellent mechanical and electrical properties, manifesting in a 189 % improvement in compressive strength and a 427 % augmentation in ionic conductivity compared to the pure cement. Meanwhile, an all-in-one SSC is assembled by an integrated polymerization-hydration synchronization strategy to improve interface contact. The resulting device presents superb energy density of 37.1 Wh kg −1 and long-life cycles. On the basis of these unique features, the device can be integrated into houses or road substrates for energy autarkic shelters and self-charging roads, which will significantly contribute to the development of new energy technologies and carbon neutrality fields.
研究领域:
材料科学
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能源技术
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建筑工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
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2025
·
IF 9.8
Peiyun Shu,Zhe He,Gentian Yue,Yueyue Gao,Jinghao Huo,Chen Dong,Furui Tan
The application of zeolite imidazole salt metal organic frameworks (ZIFs) and layered double hydroxides (LDHs) as bimetallic materials for supercapacitor electrodes is extensive, however, their inherent limitations hinder broader usage in supercapacitors. In this work, we developed a ZnNi-ZIF/LDH composite with a honeycomb structure through a sequential process involving ion doping and hydrolysis, utilizing ZIF-8 as a template to achieve a nanoscale honeycomb architecture. Subsequent phosphorization treatment yielded ZnNi-ZIF/LDH@P composite, further improving its conductivity. This process significantly enhanced the capacitive performance and stability of the composite electrode. The ZnNi-ZIF/LDH@P composite electrode revealed an excellent specific capacitance of 2855 F·g −1 at a current density of 2 A·g −1 , maintaining an impressive 93.4 % capacitance retention after 6000 charge-discharge cycles at a current density of 15 A·g −1 . The assembled ZnNi-ZIF/LDH@P//AC asymmetric supercapacitor was capable of powering a HENU light panel for at least 2 min, and its specific capacitance remained 96.4 % of the initial value after 4000 cycles at a current density of 5 A·g −1 . Overall, the ZnNi-ZIF/LDH@P composite demonstrates outstanding capacitance performance, highlighting its great potential in the field of energy storage.
研究领域:
材料科学
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能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2025
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IF 4.6
Yiqing Wu,Xiangmei Ma,Bin Wang,Yanan Li,Shengtao Gao
The detrimental effects of ultraviolet (UV) and electromagnetic (EM) radiation on human health and physiological functions are well documented. The development of efficient shielding materials to mitigate these effects is therefore an urgent necessity. In this study, Zn/Ti-LDH@Ce/Fe-MOF@PPy composites were successfully prepared by hydrothermal synthesis and interfacial polymerisation. The properties of the composites were compared and analysed with those of pure Zn/Ti-LDH and Ce/Fe-MOF, and the results show that the prepared materials have excellent comprehensive properties, with a broad EAB of 5.2 GHz and a RL min of −46.2 dB at 14.8 GHz at the thickness of 3 mm, while exhibiting excellent UV shielding capability.The present study offers novel concepts and efficacious methodologies for the engineering of high-performance microwave absorbing and UV shielding materials.
研究领域:
材料科学
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环境科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Acta Biomaterialia
·
2017
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IF 6.319
Rongrong Zhu,Zhaoqi Wang,Peng Liang,Xiaolie He,Xizhen Zhuang,Ruiqi Huang,Mei Wang,Qigang Wang,Yechang Qian,Shilong Wang
Vascular endothelial growth factor (VEGF) plays an important role in angiogenesis and is highly expressed in carcinoma, which make it an important target for tumor targeting therapy. Neuroblastoma is the main cause for cancer-related death in children. Like most solid tumors, it is also accompanied with the overexpression of VEGF. Doxorubicin Hydrochloride (DOX), a typical chemotherapeutic agent, exhibits efficient anticancer activities for various cancers. However, DOX, without targeting ability, usually causes severe damage to normal tissues. To overcome the shortages, we designed a novel nano-composite, which is Bevacizumab (Bev) modified SiO 2 @LDH nanoparticles (SiO 2 @LDH-Bev), loading with DOX to achieve targeting ability and curative efficiency. SiO 2 @LDH-DOX and SiO 2 @LDH-Bev-DOX nanoparticles were synthesized and the physicochemical properties were characterized by TEM detection, Zeta potential analysis, FTIR, Raman and XPS analysis. Then in vitro and in vivo anti-neuroblastoma efficiency, targeting ability and mechanisms of anti-carcinoma and anti-angiogenesis of SiO 2 @LDH-Bev-DOX were explored. Our results indicated that we obtained the core-shell structure SiO 2 @LDH-Bev with an average diameter of 253 ± 10 nm and the amount of conjugated Bev was 4.59 ± 0.38 μg/mg SiO 2 @LDH-Bev. SiO 2 @LDH-Bev-DOX could improve the cellular uptake and the targeting effect of DOX to brain and tumor, enhance the anti-neuroblastoma and anti-angiogenesis efficiency both in vitro and in vivo, and alleviate side effects of DOX sharply, especially hepatic injury. In addition, we also demonstrated that angiogenesis inhibitory effect was mediated by DOX and VEGF triggered signal pathways, including PI3K/Akt, Raf/MEK/ERK, and adhesion related pathways. In summary, SiO 2 @LDH-Bev could be a potential VEGF targeting nanocarrier applied in VEGF positive cancer therapy. Statement of Significance This paper explored that a novel core-shell structure nanomaterial SiO 2 @LDH and modified SiO 2 @LDH with Bevacizumab (Bev) to form a new tumor vasculature targeting nanocarrier SiO 2 @LDH-Bev as vector of DOX, which was not reported before. The results indicated that SiO 2 @LDH-Bev could improve the VEGF targeting ability, anti-neuroblastoma and anti-angiogenesis efficiency of DOX. At the same time, SiO 2 @LDH-Bev-DOX could erase the cardiac toxicity and hepatic injury coming from DOX. Tube formation showed SiO 2 @LDH-Bev-DOX had the strongest effect on inhibiting angiogenesis among all the four formulations. SiO 2 @LDH-Bev-DOX could downregulate expression of p-VEGFR and inhibit activation of the Raf/MEK/ERK, p38MAPK, PI3K/Akt and FAK signaling pathways to achieve the goal of anti-angiogenesis. This work provides a novel system for the safe and efficient use of Bev and DOX on Neuroblastoma and explores the mechanism of the function of nano carrier in cancer therapy both in vitro and in vivo.
研究领域:
癌症生物学
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药学
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纳米技术
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分子生物学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Tianyu Wang,Yong Yang,Qinghua Deng,Xiaoyue Zhang,Lijun Xiong,Zheng Tang,Panjie Li,Nan Yin,Aiwu Sun,Dan Chen,Jinyou Shen
Developing of a photocatalyst for multiple antibiotics degradation and revealing their different mechanism are of great importance for wastewater remediation. Herein, a 3D marigold-like CoAl-LDH/Ti 3 C 2 hybrid is developed via in situ growth of CoAl-LDH on Ti 3 C 2 nanosheets and on-spot self-assembly during the hydrothermal process. The existence of optimized Ti 3 C 2 steers the morphology evolution from 2D lotus leaf-like nanoplate to 3D marigold-like hierarchical architecture, which greatly boosts the adsorption capacity and photon capture of the catalyst by the increased specific surface area and the scattering cross section. Meanwhile, the well-defined 2D/2D interface between the components effectively promotes the electron transfer from CoAl-LDH to Ti 3 C 2 , and the photoinduced electron-hole pairs on CoAl-LDH can be greatly separated. The density functional theory (DFT) calculations further demonstrate the change of electronic structure for the composite photocatalyst. As a result, CoAl-LDH/Ti 3 C 2 hybrid presents 85%, 56% and 70% degradation efficiency towards tetracycline hydrochloride, chloramphenicol and terramycin, which are 3.1, 3 and 2.1 times of the pristine CoAl-LDH. Furthermore, the degradation path for chloramphenicol is explored and the reason for its different degradation efficiency is revealed. The design of 3D hierarchical scaffold cooperating with 2D/2D heterogeneous interface provides a new avenue to develop ideal catalysts for wastewater remediation.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Zhuo Zeng,Xiaoming Li,Qi Yang,Dongbo Wang,Abing Duan,Shuaijun Pan,Jiangfu Zheng
In advanced oxidation processes (AOPs) based on peroxynitrite (PMS), generating reactive radicals efficiently and consistently is challenging due to high electron occupancy and slow conversion rates of PMS. In this study, ultrathin In 2 O 3 with oxygen vacancies (Ov) was combined with ultrathin ZnAl-LDH to construct S-scheme In 2 O 3 -Ov/ZnAl-LDH-Ov heterojunctions. The presence of Ov promotes the formation of charge-transfer channels (Al-O-In bonding) at the interface of these heterojunctions, thereby reducing electron occupancy and enhancing the generation of active radicals in the InLDH/PMS/Vis system. This S-scheme heterojunction facilitates the acceleration of photogenerated electrons, leading to the rapid conversion of PMS into hydroxyl (•OH) and sulfate radicals (SO 4 - •), and promotes swift electron transfer. Consequently, the InLDH/PMS/Vis system demonstrates exceptional degradation efficiency for a wide range of organic pollutants and a high removal capacity in treating real industrial wastewater. This investigation offers a novel perspective on the coordination mechanisms between photocatalysis and PMS activation.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Water
·
2024
·Vol. 16
·期 11
·1467
·
IF 3
Liying Che,Huanhuan Ji
Hydrotalcite/bismuth solid solution (2D/2D CoAl-LDH/BiO(OH)XI1−X) heterojunction photocatalysts were fabricated through a hydrothermal route. Because of their identical layered structure and interlayer hydroxides, CoAl-LDH(2D) and BiO(OH)XI1−X(2D) form a tightly bonded heterojunction, resulting in efficient light absorption, excitation, and carrier migration conversion. At the same time, the large specific surface area and abundant hydroxyl groups of the layered structure make the heterojunction catalyst exhibit excellent performance in the photocatalytic degradation of organic pollutants. Under visible light irradiation and in the presence of 1 g/L of the catalyst, 10 mg/L of methyl orange (MO) in water could be completely degraded within 20 min, and the degradation rate of tetracycline (TC) reached 99.23% within 5 min. CoAl-LDH/BiO(OH)XI1−Xstill maintained good photocatalytic degradation activity of tetracycline after five cycles, and the structure of the catalyst did not change. The reaction mechanism related to the degradation of TC by photocatalytic reactions was explored in detail, and the photoexcitation of the semiconductor heterojunction, as well as the subsequent free radical reaction process and the degradation pathway of TC were clarified. This work provides a promising strategy for the preparation of efficient photocatalytic materials and the development of water purification technology.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Yanfei Liu,Junjun Li,Liqiang Shen,Peng Zhang,Hong Yang,Peng Lu,Xingzhong Cao,Genliang Ji,Yanshuo Li
A thin-film nanocomposite (TFN) polyamide (PA) membrane is an emerging class of composite membrane that incorporates nanoparticles (NPs) into the PA layer via interfacial polymerization. However, poor interfacial compatibility between the NPs and the PA matrix often compromises desalination selectivity. Here, we fabricated TFN membranes containing layered double hydroxide (LDH) NPs intercalated with butyrate (NaB) ions to improve interfacial compatibility with the PA layer. The prepared TFN NaB series membranes demonstrated superior interfacial interaction, resulting in significantly improved water permeance (up to 5.23 L m −2 h −1 bar −1 ) and moderate NaCl rejection (up to 94 %) in the reverse osmosis. Additionally, the TFN NaB series membranes provided the higher water (48.74 L m −2 h −1 in PRO mode) and ethanol (3.94 L m −2 h −1 ) fluxes in forward osmosis (FO) and organic solvent forward osmosis (OSFO) systems, demonstrating their enhanced versatility for osmotic filtration performance. This work addressed the limitations of LDH-based TFN membranes and highlights the significance of anion engineering within LDH NPs. Overall, this work offers a promising strategy to improve permeability and desalination performance of TFN membranes for FO and OSFO applications.
研究领域:
膜科学
·
纳米技术
·
海水淡化
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高分子科学
·
材料工程
✓ 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）