JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
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IF 6.371
Yu Zhang,Wangfeng Cai,Yajie Guo,Yan Wang
In this work, a nanosheet-assembled core-shell structure composite of Co-Ni-S@CoNi-LDH was prepared on Ni foam via hydrothermal synthesis , in which Co-Ni-S nanowires as cores were assembled with the shell of CoNi-LDH nanosheets. The combination of the high conductivity of Co-Ni-S, the high specific surface area of CoNi-LDH and the multivalent state of Ni and Co provided more active sites, short and effective ion transport paths, and great synergy, which played significant roles in the excellent performance of Co-Ni-S@CoNi-LDH. Meanwhile, the nanosheet-assembled core-shell structure improved the overall stability. Based on the characterisation and the performance measurements, the Co-Ni-S@CoNi-LDH electrode showed an excellent electrochemical performance. The Co-Ni-S@CoNi-LDH electrode acquired a specific capacitance of 2414 F/g at a 1 A/g current density and a high cycle stability with an 89.7% retention after 3000 cycles. The assembled hybrid supercapacitor Co-Ni-S@CoNi-LDH//AC delivered a high energy density of 59.11 Wh kg −1 at an 855.43 W kg −1 power density, as well as an excellent rate performance of 81% after 5000 cycles at a 5 A/g current density, showing good potential for practical applications.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Wentao Liu,Qiu Wang,Zhi Liu,Guixiang Ding
A series of treble NiAl-LDH/g-C 3 N 4 /carbon quantum dots (LDH/CN/CQDs) photocatalysts is successfully prepared for the photoreduction of CO 2 to CO via a facile hydrothermal pathway. In the 3D flower-like LDH/CN/CQDs, CQDs not only achieve the efficient inhibition of charge recombination but also act as the unhindered “electronic bridges” to synergistically construct a classical type-Ⅱ charge transfer configuration, which synchronously permits the effluence of photogenerated electrons from CN to LDH and holes from LDH to CN, and promotes ultraviolet–visible irradiation respondence. The sample of LDH/CN/CQDs-6 is the optimal one amongst the LDH/CN/CQDs with a larger special surface area (98.43 m 2 g −1 ) and an appropriate content of CQDs (66.9 wt%), exhibiting the highest CO evolution rate (5.2 μmol·g −1 ·h −1 ) under visible light irradiation without any sacrificial agent or photosensitizer in water. This is 26.8- and 20.9-fold higher than those of the pristine LDH , pure CN, and their binary counterparts, respectively, and also outperforms most reported LDH-based photocatalysts. As unhindered electron conduction bridges, the highly dispersed CQDs in the LDH/CN heterojunction significantly increase utilization efficiency of light energy and separation efficiency of photogenerated electron-hole pairs. This work provides a beneficial attempt to integrate CQDs with LDH/CN for the positive synergetic effect on both photoelectric properties and electron transfer to obtain highly enhanced photocatalytic activity of CO 2 into CO, and expected to be extended towards broader photocatalytic applications.
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JOURNAL OF HAZARDOUS MATERIALS
·
2025
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IF 11.3
Jiawen Zhu,Mengying Xia,Zhenzhen Liu,Yi Yuan,Qianqian Lv,Huina Zhou,Minghua Lu
Due to persistence, high toxicity, and tendency to bioaccumulate of polychlorinated biphenyls (PCBs), accurate detection of their residual levels in environmental and food samples is particularly important. To address the challenges posed by complex sample matrices and trace analytes, a new hierarchically porous (micro/mesoporous) carbon nanosheet (HPC-NS) material was designed as sorbent. The HPC-NSs were synthesized using cobalt-based ZIF-67 as self-sacrificial template and layered double hydroxide (LDH) as substrate. These HPC-NSs were applied as fiber coating material for solid-phase microextraction (SPME) to extract and enrich trace amounts of PCBs. By combining headspace SPME with GC–MS/MS, a highly sensitive method was developed for the detection of PCBs in green tea and milk. The proposed method demonstrated a wide linear range (0.2–5000 ng·L −1 ) and low detection limits (0.02–0.06 ng·L −1 ). Experimental results indicated that the HPC-NSs exhibit excellent extraction efficiency toward PCBs, which can be attributed to multiple mechanisms including pore filling, π–π stacking, cation–π interactions, and polar interactions. This work not presents a promising SPME coating material but also offers a robust and sensitive analytical method for detecting trace PCBs in complex matrices.
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PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
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IF 2.5
Zihan Wei,Xiaoqian Ren,Tianhong Mei,Rongcheng Xiang,Wugan Wei,Xiaorui Yang,Yan Fang,Wenlong Xu,Jianliang Zhu,Jinhua Liang
In this study, various of MgFeTi-LDH/g-C3N4 photocatalytic materials had been successfully synthesized through self-assembly, and the physicochemical and photoelectric properties were thoroughly characterized. Optical performance characterizations of band gaps and VB-XPS spectra revealed that the EVB and ECB alignment of MgFeTi (3:1)-LDH/g-C3N4 composites are consistent with the fundamental characteristics of S-type heterojunctions. MgFeTi (3:1)-LDH/g-C3N4 coupled with sodium persulfate activation for TCH degradation achieved nearly 100% removal efficiency under visible light, surpassing previously reported catalysts. Moreover, five repeated tests of MgFeTi (3:1)-LDH/g-C₃N₄ showed negligible change in the removal rate of TCH, indicating its potential value for industrial applications. Furthermore, the catalytic degradation pathway and mechanism for MgFeTi (3:1)-LDH/g-C3N4 have been elucidated through LC-MS analysis, radical capture, and characterization. In addition, the high efficiency of TCH degradation is attributed to the synergy of Fe3+、Fe2+, SPS, and active species such as •OH, SO4•−, and •O2−. Finally, the QSAR analysis and OD600 values suggest that the degradation pathway and time lead to a reduction in toxicity and the potential risk to the degradation liquid. This study offers simple, economical approach to completely degradation TCH, also providing practical application prospects in wastewater treatment.
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SURFACE & COATINGS TECHNOLOGY
·
2025
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IF 6.1
Jie Qin,Zhihan Zhang,Wenhui Yao,Liang Wu,Long Li,Ke Wang,Yuan Yuan,Zhihui Xie,Yuansheng Yang,Viswanathan S. Saji,Fusheng Pan
Conventional Mg Al layered double hydroxide (LDH) monolayers offer insufficient space to accommodate the lubricants required for slippery liquid-infused porous surfaces (SLIPSs). Therefore, Mg-MOF-74 was deposited onto the as-prepared Mg Al LDH, to construct an LDH/MOF composite-layered structure, which increased the storage capacity of lubricants and imparted AZ31 Mg alloy with enhanced anti-corrosion and self-healing performance. Notably, the as-synthesized Mg-MOF-74 featured abundant open metal sites, facilitating the loading of 8-hydroxyquinoline (8-HQ) corrosion inhibitor. Specifically, 8-HQ could be loaded both in the interlayers of Mg Al LDH and open Mg sites of Mg-MOF-74. Due to the effective incorporation of 8-HQ and better insulation of a thicker lubricant layer, the LDH/MOF composite-layered SLIPS exhibited the best corrosion resistance with a corrosion current density of 5.13 × 10 −10 A·cm −2 . Furthermore, its self-healing performance was assessed by scanning vibration electrode technique and subsequent electrochemical measurements. Results indicated that the artificial scratch on the composite coating was fully repaired after 24 h of immersion in 3.5 wt% NaCl, with its impedance modulus (1.75 × 10 8 Ω·cm 2 ) restored to the same order of magnitude as that of the non-scratched specimen. This was primarily attributed to the physical self-healing of lubricants and chemical self-healing via the “gradual release & layer-by-layer deposition” of Mg 2+ and 8-HQ. Thus, the as-fabricated composite SLIPS coating demonstrates significant industrial application potential.
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·Vol. 14
·期 1
·120955
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IF 7.2
Yingchao Li,Juntan Wang,Zhanyu Guo,Xiaofang Ouyang,Peng Ju,Hua Yin
This study presents a novel FeMg-layered double hydroxide (LDH) modified biochar composite (LB) designed to synergistically address phosphate recovery from wastewater and heavy metal immobilization in contaminated soil. The composite exhibits an exceptional phosphate adsorption capacity of 25.02 mg/g, representing a 169.00 % increase compared to pristine biochar. The improved performance results from precipitation and anion exchange within the LDH layers. And the competitive adsorption tests further confirm that LB better retains phosphate in simulated wastewater. When repurposed as a soil amendment, phosphate-laden LB (P-LB) demonstrates remarkable heavy metal immobilization efficiencies, achieving 41.23 % Pb, 30.52 % Cu and 25.63 % As immobilization at a 1.0 % dosage, representing an 18.70–26.42 % improvement over LB. Beyond its metal stabilization capabilities, P-LB effectively enhances soil phosphorus cycling, increasing total phosphorus by 14.41 % and bioavailable phosphorus by 9.02 %. Furthermore, the remediated soil exhibits significantly enhanced enzymatic activity, with urease and sucrase activities increasing by 21.38 % and 380.10 %, respectively. Pot experiments confirm the agronomic benefits of P-LB, demonstrating a 68.16 % increase in plant height and a 39.27 % increase in biomass accumulation in the remediated soil. This integrated approach, leveraging LDH-phosphate synergy, not only achieves phosphate recovery in sewage but also realizes metal immobilization and soil fertility remediation in contaminated soil.
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高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2017
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IF 3.615
Xingzhong Guo,Pengan Yin,Hui Yang
Hierarchically porous composites constructed by ZnAl-Cl type layered double hydroxides (LDH) nanosheets and amorphous Al(OH) 3 nanosheets were synthesized via a facile sol-gel route for the adsorption of two typical anionic dyes Methyl Orange (MO) and Congo Red (CR) from aqueous solutions. The micro-macrostructure and adsorption properties of hierarchically porous ZnAl-LDH/Al(OH) 3 composites before and after calcination were investigated in detail. The adsorption mechanism and adsorption–desorption cycles were also discussed. Materials characterization confirm that the resultant hierarchically porous composites possess three-dimensional macrostructure with interconnected macropores and co-continuous skeletons constructed by ZnAl-LDH and Al(OH) 3 nanosheets . Calcination at 500 °C allows the transformation from LDH composite to layered double metal oxides (LDO), while the macrostructure is basically maintained with a macropore size of 0.5 μm, a porosity of 53.1% and a BET surface area as high as 122 m 2 g −1 . Adsorption performances show that hierarchically porous composites exhibit ultrafast adsorption rates and high adsorption capacities in the removal of anionic dyes CR and MO. The maximum adsorption capacities of hierarchically porous LDH-based composites and LDO composites via calcination at 500 °C are 2348.3 and 1574.4 mg g −1 for CR and 1013.5 and 1015.1 mg g −1 for MO, respectively. XRD and FTIR results after the dyes adsorption indicate that the intercalation of MO − and CR − anions into the LDH structure via ion exchange with the pristine chloride ions group and the attachment on the external Al(OH) 3 surface determine the adsorption behavior , thus leading to an expansion of the interlayer space . And the calcined products LDO-based composites can be reversibly transformed back into the LDH structure via reconstruction procedure in the presence of dyes aqueous solution. Furthermore, the adsorption–desorption cycles confirm that the as-prepared hierarchically porous composites own excellent recyclable properties and the removal efficiency for CR and MO are 80.2% and 73.7% even after five cycles, respectively.
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BIOMASS & BIOENERGY
·
2026
·
IF 7
Yingying Zhu,Zhong Wang,Jinze Li,Yumeng Ren,Chao Zeng,Geng Chen
Mg-Zn-Fe LDH was anchored on phosphate-modified reed straw biochar. • Mg 1 Zn 1 Fe-LDH@PBC reached a surface area of 394.466 m 2 g −1 . • The adsorbent efficiently removed RhB, MO, and OTC from water. • Maximum RhB adsorption capacity reached 659.2 mg g −1 . • Removal efficiency remained around 70% after five cycles. Sustainable conversion of waste biomass into high-performance adsorbents provides an effective route for organic wastewater remediation. In this study, phosphate-modified reed straw biochar-supported layered double hydroxide composites (LDH@PBC) were synthesized via a facile co-precipitation method. Binary and ternary LDHs containing Mg 2+ , Zn 2+ , and Fe 3+ were constructed on the biochar matrix, and their adsorption performance toward rhodamine B (RhB), methyl orange (MO), and oxytetracycline (OTC) was systematically evaluated. The optimized Mg 1 Zn 1 Fe-LDH@PBC exhibited a well-developed porous structure, abundant surface functional groups, and the highest specific surface area of 394.466 m 2 g −1 . Owing to the synergistic effects of phosphate-modified biochar and Mg-Zn-Fe LDH nanosheets, the composite maintained stable adsorption efficiency over a broad pH range. The optimized Mg 1 Zn 1 Fe-LDH@PBC achieved a maximum experimental RhB adsorption capacity of 659.2 mg g −1 under the optimized dosage condition. In contrast, Langmuir isotherm fitting gave theoretical maximum monolayer adsorption capacities of 944.898, 696.552, and 303.146 mg g −1 for RhB, MO, and OTC at 298 K, respectively. Kinetic and isotherm analyses suggested that the adsorption process may be associated with multiple interactions, including electrostatic attraction, ion exchange, hydrogen bonding, π–π interactions, and possible surface complexation. In addition, the removal efficiency remained around 70% after four adsorption–desorption cycles, indicating favorable reusability. This work highlights a promising biomass-derived LDH/biochar adsorbent for efficient and sustainable removal of multiple organic pollutants from water.
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Energy & Environmental Materials
·
2026
·
IF 13.8
Zhe Sun,Jianye Wang,Zengxuan Chen,Huashuo Zhang,Siyuan Liu,Bo Liao,Zhaojie Wang,Xiaoqing Lu
The development of efficient and stable oxygen evolution reaction (OER) electrocatalysts is crucial for sustainable hydrogen production through water splitting. Though NiFe-layered double hydroxide (NiFe-LDH) represents a promising non-precious catalyst, its practical application is hindered by rapid degradation under operation due to metal leaching and sluggish kinetics. Bridged-linked structures were synthesized using a hydrothermal method. Inspired by the amino acids in photosystem II (PSII), we reported an organic–inorganic hybrid electrocatalyst of NiFe-LDH coupled with 4-chlorobenzoic acid (CA) that synchronously enhances OER activity and stability. The bidentate CA ligand bridges adjacent LDH layers via Fe-O-C and Fe-Cl-C bonds, modulating the electronic structure of metal centers and facilitating proton-coupled electron transfer. The resulting NiFe-LDH-CA exhibits an ultralow overpotential of 213 mV at 10 mA cm −2 , and remarkable stability over 550 h at 500 mA cm −2 in alkaline medium. It can also operate stably for 120 h under industrial conditions, experiencing virtually no performance degradation. In situ Raman spectroscopy and pH-dependent studies reveal that the anchored CA acts as a dynamic proton-transfer relay, facilitating concerted proton-electron transfer during OER. DFT calculations further confirm the reduced energy barrier of the rate-determining steps and promote the reaction kinetics. Additionally, the introduction of Fe-O-C/Fe-Cl-C bridge structure prevents the Fe species from dissolution during OER, thereby enhancing the stability of the catalyst. This work offers valuable insights for designing high-performance catalysts with bio-inspired proton-management functionality.
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高影响因子
Bioactive Materials
·
2026
·
IF 23.6
Hong Cheng,Tao Wang,Hanji Huang,Tingting Hu,Fuzhi Pang,Jun Li,Yuxuan Zhao,Yuanyuan Liu,Simeng Yu,Pan Hu,Jinmin Zhao,Li Zheng,Ruizheng Liang,Zhenhui Lu
The clinical management of osteosarcoma faces critical challenges, including postoperative recurrence and metastasis of residual tumor cells, chemotherapy resistance, and impaired self-repair capacity due to extensive bone defects following tumor resection. Herein, we develop a novel functionalized 3D-printed scaffold with NIR-II responsiveness (BGS/I-LDH@MgO 2 ), designed to simultaneously address the dual needs of inhibiting osteosarcoma recurrence and promoting bone regeneration. This scaffold consists of 3D-printed bioactive glass scaffold (BGS) and MgO 2 -modified ZnAl-layered double hydroxides (ZnAl-LDHs) intercalated with 5-iodo-isophthalic acid (I-IPA). Under NIR-II irradiation, the scaffold effectively triggers a photodynamic therapy (PDT) effect to eliminate osteosarcoma cells. Notably, the incorporation of MgO 2 enables oxygen release within the tumor microenvironment, alleviating hypoxia and enhancing PDT efficacy for superior antitumor performance. Furthermore, the degradation of ZnAl-LDHs and MgO 2 releases Mg 2+ and Zn 2+ ions and generates a mildly alkaline microenvironment, which collectively facilitate the osteogenic differentiation of bone marrow mesenchymal stem cells and accelerate the process of bone healing. This functionalized 3D-printed scaffold demonstrates excellent anti-tumor and osteogenic properties, showing great promise for the treatment of osteosarcoma-associated bone defects.
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PubMed
高影响因子
EES Catalysis
·
2026
·
IF 9.8
Mingge Zhi,Jinan Niu,Chaoyao Yao,Ruixuan Zhang,Shunle Zhou,Sonehra Anjum,Fangfang Liu,Yihan Ling,Guiqing Liu,Guohua Fan,Arianit A. Reka,Farid Akhtar,Peizhong Feng,Hermenegildo Garcia
Developing efficient and durable oxygen evolution reaction (OER) electrodes for alkaline water electrolysis requires not only catalytically active components but also strong interfacial integration between the catalyst layer and the conductive substrate. Herein, we report a one-step hydrothermal route for constructing a six-metal NiZnCuCoMnFe LDH-based heterostructure directly on copper foam, denoted as M6-LDH/CF. Rather than forming an ideal homogeneous multimetal LDH phase, the synthesis produces an integrated architecture consisting of a six-metal LDH nanosheet framework, segregated Co/Mn-containing oxide or oxyhydroxide surface phases, and a reconstructed Cu/Cu₂O/CuO interfacial region derived from the substrate. Structural analyses indicate that differences in hydrolysis, oxidation, and precipitation behavior among the metal species, together with substrate oxidation under hydrothermal conditions, govern this non-ideal growth pathway. The optimized M6-LDH/CF electrode exhibits overpotentials of 181, 392, and 502 mV at 10, 50, and 100 mA cm⁻², respectively, and maintains stable operation at 50 mA cm⁻² for 100 h. Post-OER XPS further reveals pronounced surface-state evolution, including Cu oxidation, Zn leaching, and the formation of more metal–oxygen–metal coordination environments, indicating that M6-LDH/CF functions as a precatalyst architecture that evolves toward a more oxidized working state during operation. These results suggest that controlled non-ideal in situ growth can be used constructively to fabricate integrated multimetal OER electrodes with favorable activity and operational stability in alkaline media.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jingjie Wang,Mingcong Tang,Xiaoli He,Shaoyang Zhen,Fir Dunkin,Zhaofeng Wu
The urgent need for advanced human-motion sensing in sports and healthcare drives the development of flexible piezoelectric sensors. This study introduces a high-performance, potentially eco-friendly sensor using ultrathin asymmetric ZnFe-LDH nanosheets and PDMS, exhibiting exceptional sensitivity with a pressure sensitivity of 2.316 mV/kPa and an ultra-low detection limit of 0.001 N, along with robust cycling stability (>10,000 cycles). It enables real-time monitoring of subtle motions like nodding and joint bending, and facilitates distinguishable detection of gait and hand gestures via insole and gesture recognition systems. A geometry-driven approach with hyperspherical embedding algorithm is employed for data processing, where multi-granularity temporal convolutions extract features mapped onto a hypersphere for angular similarity-based classification. This achieves 100% gesture and gait recognition accuracy via Geometry-Embedded algorithm. This work provides a low-cost, sustainable material platform and an algorithmic solution for flexible piezoelectric sensing in health monitoring and human-computer interaction, highlighting the transformative potential of ZnFe-LDH/PDMS composites for next-generation flexible electronics.
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高影响因子
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