SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Chun-Yang Li,Tong Zhai,Wentao Gu,Huan Lv,Xue-Meng Ji,Man-Man Wang,Jing-Min Liu,Shuo Wang
Advanced glycosylation end products (AGEs) are becoming a prominent issue in the biomedical and food safety industries because of their strong relationship to human health. Here, a MIL@PANI@LDH photocatalyst was prepared by in-situ growth method, realizing thorough elimination of AGEs for the first time. The synthesized photocatalysts used MIL-101 holding remarkably specific surface area as the core and PANI with a large number of amino and imine groups as the linker to ensure excellent adsorption capacity. The lamellar LDH structure grown in the outermost layer, on the other hand, introduces a narrower band gap and stronger light absorption ability, capable of activating sodium persulfate (PS) and generating free radicals with powerfully oxidizing ability. They work in concert to achieve the effective degradation. Through the optimization of the reaction conditions, the best photochemical performance could be achieved with a Zn/Al molar ratio of 3:1, and the degradation rates of AGEs were greater than 99.8 % (within 150 min). Additionally, multiple radical synergistic and non-radical action pathways involved in the system were revealed. The precision-engineered catalysts also exhibited high stability, reusability, and desirable biosafety, offering an effective and sustainable solution to the problem of purifying hazardous substances in real application.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Jinfeng Chen,Yi Tang,Xinyan Chen,Junlan Chen,Zhang Yan,Xiao Yao,Hongyu Zhang,Yanyan Pei,Zhuwu Jiang
The escalating presence of antibiotic contaminants in wastewater presents substantial environmental and public health challenges, primarily due to their role in the proliferation of antibiotic resistance genes (ARGs). This study examines the effectiveness of a hybrid system integrating nano zerovalent iron (nZVI) and layered double hydroxides (LDH) in treating wastewater contaminated with ciprofloxacin (CIP). Reactor experiments revealed that incorporating nZVI@LDH mitigated the shock caused by CIP while sustaining a methane production rate that was 116 % higher than that of the control group. Furthermore, there was a 50 % increase in CIP removal efficiency. Notably, there was a significant enrichment of hydrogenotrophic methanogens, such as Methanobacterium and Methanolinea , in the nZVI@LDH-enhanced reactors. Additionally, the levels of reactive oxygen species decreased by 50 %, from 11,813 ± 1230 to 4525 ± 1030 counts/s, and the abundance of ARGs declined by 75–88 % compared to the control reactors. An external electric field further promoted electron transfer, boosting the relative abundance of electrochemically active bacteria, with Proteobacteria comprising up to 40 % of the microbial community in the 1 V + nZVI@LDH reactor. This hybrid system demonstrates significant efficacy in degrading CIP and decreasing ARGs generation, underscoring its potential as a sustainable strategy for managing antibiotic-laden wastewater.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Siyuan Jin,Zhou Jie,Ruizhi Wu,Xiaochun Ma,Zhe Yu,Wang Guixiang,Jinghuai Zhang,Boris Krit,Sergey Betsofen,Neshchimenko Vitalii,Buzikov Ruslan,Min Qiu,Yurong Yang,Jiaming Chen
An in-situ grown LDH/ZIF-8 hybrid film on the surface of MAO film based on the LA93 alloy was successfully fabricated by the one-step method. The composite film, called as MLZ, demonstrates exceptional corrosion resistance. The corrosion current density is reduced by two orders of magnitude compared to the MAO film. Furthermore, it possesses significant long-term protective capabilities. Experimental measurement and density functional theory (DFT) calculations were conducted to investigate the formation mechanism of MLZ composite film. During the hydrothermal, Zn ions from the in-situ generated LDH on the MAO surface serves as active nucleation sites, facilitating the nucleation and growth of ZIF-8 crystals. The formation of ZIF-8 effectively compensates for the intergranular defects in LDH, enhancing the integrity of the film. LDH/ZIF-8 film effectively seals defects in the MAO film and constructs a robust physical barrier, significantly enhancing the protective capacity of the film.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2025
·
IF 17.7
Bo Zhang,Ru Xiao,Liyuan Liu,Xiaobin Liu,Ying Deng,Qingliang Lv,Zexing Wu,Yunmei Du,Yanyan Li,Zhenyu Xiao,Lei Wang
Although the intermittent energy-driven direct seawater splitting technology provides an unparalleled approach to achieving sustainable development, the severe corrosion via aggressive Cl – severely affects the stability and efficiency of the anode catalyst and limits its industrial application. Herein, a lattice Cl – functioned NiFe-LDH electrode (E-NF-LDH Cl or E-NF-LDH SW ) is firstly constructed by a minute-level electrochemistry assisted chlorine corrosion strategy, which presents enhanced oxygen evolution reaction (OER) performance and excellent anti-Cl – corrosion behavior for seawater splitting. The optimized E-NF-LDH Cl and E-NF-LDH SW deliver low OER overpotential of 355 and 384 mV to reach 1 A cm −2 current density in the 1 mol L –1 KOH and 1 mol L –1 KOH seawater, respectively, as well as excellent stability of E-NF-LDH Cl is maintained at 1 A cm –2 for 400 h in the 1 mol L –1 KOH and 1 mol L –1 KOH + 0.5 mol L –1 NaCl. MD (molecular dynamics) simulation and DFT (density functional theory) calculation confirmed that strong common-ion repulsion effect in IHP region repels free Cl – , forming high spin polarization centers and more single electrons to enhance the intrinsic activity of OER.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jianghong You,Yiming Yuan,Chen Zhang,Haoming Xu,Mingyao Chen,Ying Wang,Dongsheng Chen
The transition metal oxide of nickel cobaltite (NiCo 2 O 4 ) has gained more and more attention from battery industry for its excellent properties of high capacitance and cycling stability. However, its performance when used in supercapacitors is compromised due to its limited active sites and poor conductivity. Herein, a 3D (three-dimensional) hierarchical and high-performance material of NiCo 2 O 4 @MXene@LDH (LDH: layered double hydroxide) composite was designed and synthesized. In the material, NiCo 2 O 4 nanorods form a skeleton of nanosheet arrays on layered MXene; and on the nanosheet arrays, NiCo-LDH nanoparticles are attached to form a 3D hierarchical structure, extending the electrochemically active sites, suppressing the agglomeration of NiCo-LDH and producing hierarchical channels that promote electron and ion transport. Density functional theory (DFT) calculations and the results of Ultraviolet–visible (UV–Vis) spectrophotometry indicated that the introduction of MXene and NiCo-LDH induces a redistribution of the electronic states of NiCo 2 O 4 due to the formation of a heterointerface, thereby decreasing its bandgap by about 1.42 eV. The X-ray photoelectron spectroscopy (XPS) analysis further demonstrated the negative shift in the initial binding energies of nickel (Ni) and cobalt (Co) atoms, which is due to their transition of spin states; and this is in agreement with the high intensity of electron paramagnetic resonance (EPR) peak in the NiCo 2 O 4 @MXene@LDH composite. The in situ Raman analysis reveals that the enhanced energy storage performance originates from the accelerated formation and increased exposure of NiCoOOH active species during electrochemical cycling. The synergistic effect of MXene and NiCo-LDH introduced into NiCo 2 O 4 enhanced the supercapacitor in terms of power and energy densities. It was indicated that the supercapacitor fabricated from NiCo 2 O 4 @MXene@LDH supercapacitor exhibited a specific capacitance of 5066 F g −1 at 1 A g −1 , and a capacitance retention of 97.82 % after 10,000 charge cycles at 10 A g −1 . Moreover, an asymmetric supercapacitor (ASC) device with a NiCo 2 O 4 @MXene@LDH//AC configuration was developed. The supercapacitor presented an energy density and power density of 70.11 Wh kg −1 and 850.22 W kg −1 , respectively. The redistribution of electronic states and decreased bandgap could facilitate the creation of NiCo 2 O 4 -based materials with customized features for supercapacitors.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Jiangfu Zheng,Xiaoming Li,Jinglin Ding,Xingong Li,Yiqiang Wu
This study presents the successful development of a novel floatable photocatalyst, EPLDH, exhibiting exceptional enrichment and degradation capabilities for nitenpyram (NTP) under visible light irradiation. Structural characterization via EPR confirmed that the carbon-oxygen dual-defect electronic defect zones in EPLDH significantly enhance photogenerated charge carrier separation efficiency. Crucially, the reduction of surface-coordination-induced negative charge was identified as the key factor driving the superior catalytic performance of the optimized EPLDH0.2 sample. Degradation kinetic experiments demonstrated that the EPLDH0.2/Vis system achieved complete NTP removal within 40 minutes–1.6 times higher than control systems (EP/Vis: 62 %; ZnAl-LDH/Vis: 67 %). This remarkable performance stems from synergistic effects: (1) morphology regulation and defect engineering, (2) efficient Z-scheme heterojunction charge transfer, and (3) interfacial enrichment enabled by the catalyst's floatability, collectively boosting reactive oxygen species (ROS) generation and utilization. EPLDH0.2 exhibited broad-spectrum degradation capability, efficiently removing 22 emerging contaminants (ECs), underscoring its anti-interference capacity and universal applicability. Practical validation in an immobilized dual continuous-flow system under natural sunlight confirmed high removal efficiency for NTP, bisphenol A, and ciprofloxacin, offering a cost-effective solution for aquatic micropollutant remediation. Mechanistic studies identified 1 O 2 , •O 2 − , and h + as dominant active species through quenching experiments and ESR analysis. Degradation pathways of NTP, including alkyl chain cleavage, nucleophilic ring-opening, and decarboxylation, were proposed based on intermediate analysis, Fukui index calculations, and electrostatic potential distribution. Ecological toxicity assessments confirmed significant reduction after mineralization, ensuring environmental safety.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
WATER AIR AND SOIL POLLUTION
·
2026
·Vol. 237
·期 12
·696
·
IF 3.5
Li Lanlan,Wang Zili,Wang Guanghui,Zhang Xuewen,Deng Nansheng
Widespread contamination by Pb(II) and Cd(II) poses persistent environmental and public health risks, while achieving selective removal with a clear mechanistic understanding in multicomponent systems remains challenging. Herein, a MgFe-MoS₄-LDH/BC hybrid composite was synthesized via co-precipitation followed by MoS₄ 2 ⁻ intercalation to regulate interlayer chemistry and introduce sulfur-based active sites. Adsorption kinetics followed a pseudo-second-order model, and equilibrium data were well described by the Langmuir model, indicating dominant chemisorption. Under optimized conditions (C₀- Pb = 100 mg/L, C₀- Cd = 20 mg/L, pH = 6.0, dosage = 0.2 g/L), the composite achieved removal efficiencies of 99.53% for Pb(II) and 85.71% for Cd(II). In binary systems, Pb(II) showed stronger competitive behavior, exhibiting only a 4.7% capacity reduction compared to 9.4% for Cd(II). Thermodynamic analysis confirmed that adsorption was spontaneous and endothermic. Combined XRD, FTIR, XPS, and density functional theory (DFT) analyses revealed that metal immobilization was governed by complexation with oxygen- and sulfur-containing groups, surface precipitation (Pb₂(SO₄)O and Cd(OH)₂), and electrostatic attraction. DFT calculations further demonstrated stronger Pb–S interactions, explaining preferential Pb(II) adsorption. The composite maintained high stability after five regeneration cycles, and key scientific challenges and future innovation pathways are summarized to guide practical application. This work provides a rational strategy for designing selective LDH-based composites for heavy-metal remediation.
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2023
·
IF 5.3
Yuxiang Mao,Jun Cheng,Hao Guo,Lei Qian,Weijuan Yang,Ji-Yeon Park
To improve Co-LDH nanosheet utilization in catalytic conversion of microalgal lipids to biodiesel, an efficient bifunctional catalyst with synergetic acid and base sites was synthesized by in situ growth of Co-LDH nanosheets on HY zeolite. The bifunctional catalyst with a molar ratio of Co-LDH nanosheets to HY zeolite at 4 exhibited synergistic catalysis of acid sites in the HY zeolite and base sites Co(OH)x (x = 2, 3) in the Co-LDH nanosheets, which promoted esterification of free fatty acids and transesterification of triglycerides in microalgal lipids. Co-LDH nanosheets were dispersed on the HY zeolite surface through generated Si–O–Co bonds to enhance Co(OH)x (x = 2, 3) utilization, while the specific surface area of the catalyst increased from 107.9 m2/g (Co-LDH) to 272.5 m2/g. Therefore, the optimal catalyst promoted conversion efficiency from 87.8 to 96.1%, and the conversion efficiency remained at 87.6% after six reusability cycles.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2023
·
IF 8.9
Jyunhong Shen,Antong Shi,Jiahui Lu,Xiangtao Lu,Hongyu Zhang,Zhuwu Jiang
A novel magnetically separable Cu/ZnO/CoFe‒CLDH composite, whose synthesis was optimized using the Taguchi approach, was optimally synthesized by hydrothermally coupling Cu-doped ZnO and calcined CoFe–LDH. The synthesized Cu/ZnO/CoFe‒CLDH was applied to construct a synergistic process of integrating visible-light photocatalysis (VPC) with persulfate activation (PSA) and to degrade bisphenol A (BPA). Various characterizations proved that Cu/ZnO/CoFe‒CLDH possessed excellent physicochemical, optoelectronic and magnetic properties, thereby enhancing the catalytic performance. The Cu/ZnO/CoFe‒CLDH composite achieved highly efficient BPA degradation during the synergistic VPC‒PSA process, and its reaction rate constant (0.74 h −1 ) was 6.17-, 4.11-, and 2.85-fold higher than that of Cu/ZnO, CoFe‒CLDH, and Cu/ZnO/CoFe‒CLDH (VPC only), respectively. Moreover, the effects of the catalyst dosage, initial pollutant concentration , solution pH, persulfate dosage and coexisting ions on BPA degradation were comprehensively investigated. Radical-trapping experiments revealed that the contributions of ·OH, SO 4 · ‒ , ·O 2 − , and 1 O 2 involved in BPA degradation. Based on the intermediates identified by LC/MS, the main BPA degradation pathways were determined, the overall trend of which reflects a decreasing ecotoxicity. This study verified the effectiveness of the synergistic VPC‒PSA process with Cu/ZnO/CoFe‒CLDH, which could be used as a new reference for removing organic micropollutants from water.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2019
·
IF 7.65
Xiuhui Li,Zongxue Yu,Liangyan Shao,Haojie Zeng,Yuchuan Liu,Xiaofang Feng
A novel strategy to construct a visible-light-driven Z-scheme heterojunction catalyst was employed by crosslinking ZnAl-layered double hydroxide (ZnAl-LDH) nanosheets with the active phase on carbon nitride (g-C 3 N 4 ) substrates via a polydopamine bridge (a similar "bridge" structure). In this paper, multiple optical and electrochemical detection methods indicated that the 0.5P-LDH_500CN photocatalyst demonstrated excellent visible-light absorption properties, photo-generated electron-hole separation ability and photocatalytic activity for p-nitrophenol under visible-light (> 420 nm), etc. A Z-scheme charge transfer mechanism via PDA bridge was proposed to achieve heterojunction charge separation. This mechanism involved the recombination of photo-induced electrons directly on the ZnAl-LDH_500 valence band through the PDA channel and the holes were captured at the conduction band energy level of the g-C 3 N 4 . The detection of active species, including O 2 -, h + and OH, further proofed the Z-scheme charge transfer mechanism, which could be speculated that all active species affected the photocatalytic reaction with the order of h + > OH > O 2 -. Meanwhile, this work also exposed that the formation of active phase in ZnAl-LDH could synergize with PDA to promote the application of visible-light-active photocatalysts based on g-C 3 N 4 materials in high-efficiency energy.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xinyu Shan,Zuoxing Guo,Chao Zhang,Wenquan Wang,Lijun Zhao
It is a great challenge to develop freestanding ultralight cathodes for lithium–sulfur battery exhibiting good electrochemical performances. Herein, ultrathin porous nickel–cobalt layered double hydroxide (NiCo-LDH) nanosheets were grown on the surface of ultra-light nickel microwire aerogels (NMWAs), and there is capillary action in the gaps formed by the ordered arrangement due to the presence of magnetic filed in the preparation process, which has the advantages of synergistic adsorption and accelerated conversion kinetics of lithium polysulfide . Because of the abundant hydrophilic hydroxyl groups on the surface of NiCo-LDH and the capillary action of NMWAs, the integrated freestanding film cathode sulfur host (NMWAs@NiCo-LDH/S) provides excellent rate performance as well as cycling stability. The film cathode has an ultra-high initial specific capacity of 1238.4 mAh g −1 at 0.1C and an excellent reversible capacity of 805.8 mAh/g at 5.0C. Even after 700 cycles at a high current density of 5.0C, it still provides a reversible capacity of 647.1 mAh g −1 with a capacity decay rate of only 0.018 % per cycle. This work provides a simple and new way for the design of high rate lithium–sulfur battery film cathodes with good cycle stability.
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Chenyang Zhao,Yi Huang,Yue Li,Chen Wang,Wenlin Yuan,Di Cheng,Tao Shen,Ji Zhang,Jie Liu,Chao Yang,Chunchun Wu,Qianhong Shen,Hui Yang
Nanocontainers encapsulating corrosion inhibitors are commonly incorporated into organic coatings to enable self-healing effects, thereby ensuring long-term anticorrosion performance. In this study, a novel dual corrosion inhibitor-loaded self-healing nanocontainer with core-shell structure was proposed for fabricating composite waterborne epoxy coatings with both active and passive corrosion prevention properties. The nanocontainer, named BTA-ZIF-8@LDH-Mo, was synthesized through the in-situ growth of molybdate-intercalated ZnAl layered double hydroxide (LDH-Mo) on the surface of 1H-benzotriazole-inbuilt zeolitic imidazolate framework (BTA-ZIF-8). Potentiodynamic polarization results showed that the I corr of bare Q235 carbon steel immersed in a 3.5 wt% NaCl solution decreased from 4.658 × 10 −6 A/cm 2 to 1.274 × 10 −6 A/cm 2 after introducing BTA-ZIF-8@LDH-Mo nanocontainers, resulting in a superior corrosion inhibition efficiency of 72.65 %. Electrochemical impedance spectroscopy further demonstrated that the |Z| f=0.01Hz of epoxy coating doped with BTA-ZIF-8@LDH-Mo reached 4.24 × 10 9 Ω·cm 2 after 42 d of immersion in 3.5 wt% NaCl solution, approximately 30 times higher than that of pure EP coating. Moreover, investigations on artificially scratched coatings indicated that the incorporation of BTA-ZIF-8@LDH-Mo nanocontainers effectively mitigated the corrosion process by forming an inhibiting layer on the metal substrate that impeded the corrosion process. The dual corrosion inhibitor strategy relies on the synergistic action of BTA pre-loaded in ZIF-8 nanoparticles and molybdate ( MoO 4 2- ) intercalated in LDH interlayers for active corrosion protection . Additionally, the nanocontainers enhance passive protection by elongating the diffusion paths of corrosive media and trapping chloride ions. This nanocontainer design offers a facile strategy for fabricating a smart coating with the excellent anticorrosion properties.
✓ 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）