SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Wei Zhao,Yinan Xu,Yuehui Qiao,Rui Sun,Jie Qian,Yixue Wang,Quan Liu,Zhekun Shi,Fandong Meng,Xiaoli Zhan,Qinghua Zhang
Zeolites have been widely utilized in the adsorption of volatile organic compounds (VOCs) due to their high specific surface area and robust stability. However, the adsorption capacity of zeolites for VOCs is considerably reduced under humid conditions due to the competitive adsorption between water and VOCs, thereby limiting their industrial applicability. Herein, we report a core–shell ZSM-5@NiAl-LDH (Z-L) composites designed specifically for efficient adsorption of VOCs under high humidity conditions. The core–shell architecture is achieved by introducing active sites onto the ZSM-5 framework pretreated with high-alkalinity agents, followed by the growth of NiAl-LDH on its surface, creating a regular, vertically staggered structure. Compared with ZSM-5 zeolite, Z-L composites show a larger specific surface area, wider pore size, and larger mesopore volume, allowing a high adsorption capacity of the VOCs. Contact angle and static adsorption tests of water molecules reveal that the LDH shell effectively increases the hydrophobicity of Z-L composites. The dynamic adsorption behavior for m-xylene demonstrates that Z-L composites exhibit significantly enhanced adsorption capacity, 3.79 times that of ZSM-5 zeolite. Furthermore, Z-L composites exhibit a higher selectivity for m-xylene at 60 % relative humidity, achieving a Q wet /Q dry ratio of 86.7 %, outperforming most porous adsorption materials. Kinetic model analysis reveals that the augmentation of mesopores in Z-L composites enhances the effective diffusion space for synthesized samples, resulting in exceptional adsorption performance. This novel synthetic material is anticipated to be a promising candidate for VOCs pollution control in high-humidity environments.
研究领域:
材料科学
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环境工程
·
化学工程
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Honglin Qin,Lizhen Qiao,Chen Li,Xiuchao Yao,Bingyan Han
In this work, a novel composite Fe 3 O 4 /NiAl LDH/MIL-125 (Ti) was developed through modifying the Ti-based MOF into magnetic NiAl LDH materials and applied to efficiently extract organophosphorus flame retardants (OPFRs) from water samples. The prepared Fe 3 O 4 /NiAl LDH presented good extraction efficiency for OPFRs, and, electrostatic interaction and π-π interaction also played an important role for the extraction process, except for the selective metal-affinity coordination between the adsorbents and OPFRs. Some key factors influencing the magnetic solid-phase extraction efficiency were explored, including adsorbent amount, ultrasound time, solution pH, salt content, the type of elution solvent and eluent volume. Under the optimal conditions, the coefficients of determination (R 2 ) of the OPFRs were 0.9976–0.9996, and the limits of detection (S/N = 3) and limits of quantification (S/N = 10) were respectively 0.3–1.0 μg·L −1 and 1.0–3.0 μg·L −1 . The developed approach was applied for the extraction and determination of OPFRs in the environmental water samples, and the spiked recoveries ranged from 82.79 % to 111.32 %.
研究领域:
环境科学
·
分析化学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
·
IF 9.136
Tao Wang,Qiuyue Men,Xiqing Liu,Hongquan Zhan,Yongqing Wang
0D/2D interface heterostructure of 0D CuInS 2 and 2D NiAl-LDH were obtained via strong interfacial contact. Mott-Schottky analysis confirmed both materials were n-type feature. Thus, a staggered n-n heterojunction was formed via the balance of Fermi level. This 0D/2D composite exhibited enchantable activity for photocatalytic degradation 2,4-Dichlorophenol under visible-light illumination, far superior than pure CuInS 2 and NiAl-LDH. The improvement of photocatalytic performance mainly attributed to the large BET surface area and interfacial contact, which resulted in more active sites, effective charge separation and transfer. Moreover, the optimal CuInS 2 /NiAl-LDH composite showed higher photostability for cycle experiments. At the same, the possible photocatalytic reaction process was proposed based on the trapping experiments, ESR technique and band position. This work provided a theory and foundation for designing and preparing of 0D/2D heterostructure system for photocatalytic application.
研究领域:
材料科学
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环境科学
·
化学
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2019
·Vol. 30
·期 3
·2572-2584
·
IF 2.195
Hu Fengxian,Cui Entian,Liu Hongxia,Wu Jing,Dai Yong,Yu Guiyun
Series of Bi 2 MoO 6 /NiAl-LDH hetero-junction photocatalysts were synthesized by a two-step hydrothermal method with a self-assembled process. It indicated that the in-situ intercalated NiAl-LDH showed a tight contact with Bi 2 MoO 6 layers and thus exhibited the rapid transfer of photogenerated electrons on the interface. The photocatalytic performance was evaluated by the degradation of rhodamine B (RhB) under visible light irradiation. The resulted Bi 2 MoO 6 /NiAl-LDH sample showed a higher visible-light photocatalytic activity for the degradation of RhB than any single component. The optimal LDH content in Bi 2 MoO 6 /NiAl-LDH is 15% with the degradation efficiency for more than 90% during 60 min. The excessive amount of NiAl-LDH in Bi 2 MoO 6 /NiAl-LDH could reduce the light absorption efficiency of Bi 2 MoO 6 and thus affected the generation of photoinduced electron–hole pairs. The enhanced photocatalytic activity and stability of Bi 2 MoO 6 /NiAl-LDH was attributed to the synergistic effects of the introduction of narrow band-gap NiAl-LDH and the construction of layered hetero-junction. Our synthetic method of self-assembly sheets has certain guided significance for the synthesis and application of other photocatalysts.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Journal of Energy Storage
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2026
·
IF 10.7
Fandi Shi,Zhuoran Hou,HuaYu Zhang,Sen Zou,Wenzhe Han
We present the rational design of a nanostructured Ti₃C₂Tₓ-MXene@NiAl-layered double hydroxide (NiAl-LDH) hybrid electrode prepared via an in situ growth strategy. Uniform deposition of nanoscale NiAl-LDH on few-layer Ti₃C₂Tₓ-MXene formed a robust interfacial structure with strong electronic coupling. DFT calculations and electrochemical analyses reveal enhanced conductivity, faster ion transport, and improved structural stability. As a result, the electrode delivers a high specific capacitance of 1570.1 F g −1 at 1 A g −1 and retains 92.8% capacitance after 5000 cycles at 10 A g −1 . An asymmetric supercapacitor using the NiAl-LDH@Ti 3 C 2 T x cathode and an activated carbon anode in 1 M KOH operates up to 1.6 V, achieving 62.8 Wh kg −1 at 1500 W kg −1 and maintaining 90.2% capacity retention with nearly 100% coulombic efficiency over 5000 cycles. Overall, this work demonstrates that NiAl-LDH@Ti 3 C 2 T x hybridization effectively balances energy density and durability, offering a scalable route for advanced electrochemical energy storage.
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Zhuwu Jiang,Haoshuai Wang,Zhihao Lin,Jin Chen,Zhen Zheng,Chunxue Li,Xiao Yao,Jyunhong Shen
Compared to traditional treatment methods, the catalytic ozonation process based on an advanced and reliable ozone generator and highly efficient catalysts has shed new light on treating algal blooms in water bodies. In this study, Ag 3 PO 4 /NiAl-LDH nanocomposites were synthesized by a two-step co-precipitation method, characterized, and applied as ozonation catalysts for the inactivation of Microcystis aeruginosa . Under controlled conditions, the nanocomposite (ANA-10) with an Ag 3 PO 4 : NiAl-LDH weight ratio of 1:10 exhibited excellent catalytic ozonation performance and reusability, effectively achieving a nearly complete algae removal within 60 min. The rate constant of ANA-10 reached approximately 0.0958 min −1 , being 6.4-, 2.8-, and 2.1-fold higher than that of individual O 3 , Ag 3 PO 4 , and NiAl-LDH, respectively. The variations in the physiological properties of the algal cells reflect severe damage and destruction of their cellular morphology, membrane permeability, intracellular and extracellular organics, proteins, and antioxidant system during the ANA-10 catalyzed ozonation process. Electron spin resonance (ESR) and quenching experiments indicated that algae inactivation can be attributed to the formed reactive oxygen species (ROS), such as OH, O 2 − and 1 O 2 . In addition, the mechanism of ROS formation over ANA-10 was clarified and involved Ag 3 PO 4 -assisted enhancement of the redox of Ni 2+ /Ni 3+ and accelerated surface hydroxylation. Overall, this study offers useful insights into the control of harmful cyanobacterial blooms.
研究领域:
环境科学
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水处理技术
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DOI
高影响因子
JOURNAL OF CATALYSIS
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2025
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IF 6.5
Jia Li,Yang Li,Yingshan Zeng,Yang Liu,Zhengguo Song,Zhi Liu
CO 2 photo reduction provides a feasible technique to solve climate issues and promote carbon neutrality. However, the efficiency of CO 2 photo reduction is severely depressed by the rapid recombination of photo generated carriers within photo catalysts, restricting the participation of electrons in the reduction process. In this study, we successfully construct a two-dimensional (2D) multilayer internal electric field (IEF) heterostructure by engineering the interface between NiAl-LDH and ZnV 2 O 6 (ZNA). Driven by the IEF, the separation of photo generated electron-hole pairs is significantly enhanced, leading to the increased utilization efficiency of carriers for active sites. The best-performing sample of ZNA-2 achieves a highest CO yield of 695.8 μmol g −1 , approximately 30.5-fold higher than that of pristine ZnV 2 O 6 . Photo electrochemical measurement and density functional theory (DFT) calculation results reveal that the 2D-2D stacked structure generates multiple interlayer built-in electric fields, which are crucial for enhancing carrier separation and suppressing recombination. Adsorption energy and intermediate COOH* analysis reveal that ZNA-2 significantly lowers the adsorption energy of CO 2 , promoting its stable adsorption and subsequent conversion. Moreover, the unique 2D multilayer IEF heterostructure greatly facilitates the formation of key intermediate COOH* and the desorption of CO during CO 2 photo reduction, leading to high CO activity and selectivity. The present work discloses the unprecedented potential of 2D multilayer IEF heterostructures for efficient CO 2 photo reduction, marking a significant advancement over conventional 2D counterparts.
研究领域:
材料科学
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环境科学
·
催化化学
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产品关联
DOI
高影响因子
ACS Omega
·
2020
·
IF 2.87
Hao Wang,Fan Yang,Zhendong Yang,Han Yang,Yan Wu
A tetrathiotungstate-intercalated NiAl layered double hydroxide (LDH) was synthesized and then calcined under N2 at various temperatures to prepare a series of NiW presulfurized hydrotreating catalysts. Upon calcination, WS42– in the interlayer decomposes into WS3 and then WS2, releasing sulfur to sulfurize nickel in the sheets. The property and activities of catalysts for hydrodesulfurization (HDS) of dibenzothiophene and hydrodearomatization (HDA) of tetralin are dependent on the calcination temperature. At 300 °C, WS3 can be well maintained, offering highly active hydrogenation sites S22– and superior HDA activity. As the temperature increases up to 500 °C, WS3 converts into WS2, while nickel sulfides migrate to the edge of WS2 to form NiWS phases with high HDS activity. LDH-based presulfurized catalysts can achieve fully sulfurized and well-dispersed tungsten species even at high tungsten loadings and can retain more WS3 even at high temperatures because of the peculiar properties of LDHs. Therefore, they show better HDS and superior HDA activities over an oxidic NiW LDH-based catalyst (LDO) and an alumina-supported NiWS presulfurized catalyst (NiWS/Al2O3). The optimized catalyst shows 1.59 and 1.05 times higher HDS activity than LDO and NiWS/Al2O3 while 2.05 and 1.77 times higher HDA activity than LDO and NiWS/Al2O3, respectively. It also shows better HDS and HDA activity for a real diesel than a NiCoMoW/Al2O3 commercial catalyst.
研究领域:
催化化学
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材料科学
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石油加工工程
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DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2026
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IF 4.4
Ye Cai,Jingjing Zhang,Yilei Zhang,Jinghua Sun,Mengting Gao,Pengqi Zhu
The Ru/NiAl-LDH catalyst was designed for the selective hydrogenation of phenolic compounds under visible light irradiation and mild conditions (55 °C, atmospheric H₂), and it achieved 99% conversion of phenol with 99% selectivity to cyclohexanol. XPS and DFT calculations confirmed that Ni 2+ in the NiAl-LDH support donates electrons to the Ru center, creating an electron-rich Ru site that enhances H 2 activation. In situ DRIFT studies verified that visible-light irradiation promotes the heterolytic dissociation and adsorption of H 2 on Ru active sites. Additionally, surface hydroxyl groups on the NiAl-LDH facilitate phenol adsorption and concentration near active sites. The catalyst demonstrated broad applicability to substituted phenolic compounds and excellent recyclability over multiple cycles. The synergistic effect between the electron-rich Ru sites and the hydroxyl groups on the NiAl-LDH surface ensures highly efficient photocatalytic hydrogenation of phenol to cyclohexanol.
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DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2017
·Vol. 20
·期 1
·414-421
·
IF 4.123
Jie Ni,Jinjuan Xue,LinFang Xie,Jing Shen,Guangyu He,Haiqun Chen
Magnetic NiAl layered doubled hydroxide (LDH)/Fe3O4–RGO composites were successfully synthesized via a simple hydrothermal route. The as-prepared samples were well characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). The results showed that NiAl LDH nanoplatelets and Fe3O4 nanoparticles sized around 15 nm were uniformly anchored on the surface of graphene sheets. The NiAl LDH/Fe3O4–RGO25 photocatalyst was employed to degrade ciprofloxacin (CIP) in an aqueous solution under visible light irradiation. It exhibited enhanced photocatalytic activity compared to pure NiAl LDH, the degradation rate of the as-prepared NiAl LDH/Fe3O4–RGO25 was 1.5 and even 3 times faster than that of NiAl LDH/RGO25 and pure NiAl LDH, respectively. This enhancement of photocatalytic activity is attributed to the addition of graphene and Fe3O4 NPs, which both efficiently promote the separation of charge carriers and improve the optical absorption properties, synergistically facilitating the photocatalysis process. Furthermore, the NiAl LDH/Fe3O4–RGO25 photocatalyst was magnetically separable and exhibited stable catalytic activity, which is beneficial to its practical application.
研究领域:
材料科学
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环境科学
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纳米技术
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光催化
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产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2025
·
IF 3.2
Youmin Cao,Geoffrey I. N. Waterhouse,Yan Li
In this study, a highly active NiAl-GCN non-noble-metal catalyst was developed for the selective catalytic oxidation of 5-hydroxymethylfurfural (HMF) to furandicarboxylic acid (FDCA). NiAl-layered double hydroxide (NiAl-LDH) was first synthesized via a hydrothermal method and then blended with dicyandiamide (2-fold by mass) and heated at 550 °C for 6 h to obtain the NiAl-GCN catalyst (consisting of a NiAl mixed metal oxide and g-C3N4). The prepared catalyst was then characterized using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM), scanning electron microscopy (SEM), N2 physisorption measurements, and X-ray photoelectron spectroscopy (XPS) to explore its structure, morphology, chemical composition, and physicochemical properties. Next, HMF oxidation tests were carried out, and the effects of reaction time, reaction temperature, amount of oxidant, and amount of catalyst on HMF conversion and product distribution were investigated to optimize the reaction conditions. In batch tests under the optimized testing conditions (acetonitrile as solvent, t-BuOOH as the oxidant, 120 °C, 12 h), the NiAl-GCN catalyst achieved a HMF conversion of 100%, FDCA selectivity of 80.6%, and good stability during recycling experiments. The synergistic electron transfer between GCN and NiAl-MMO enhances the adsorption of HMF and activation of oxidants, leading to superior catalytic efficiency and FDCA selectivity compared to single-component catalysts.
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Qiongguang Li,Yanhong Wang,Bin Lu,Jing Yu,Menglei Yuan,Qiangqiang Tan,Ziyi Zhong,Fabing Su
Vast volume expansion of Si-based materials severely deteriorates the electrochemical performance of lithium-ion batteries (LIBs). To overcome this problem, we designed and synthesized Si@NiAl-LDH (layered double hydroxide) hybrid composites with the unique hollow core-shell structure via a re-precipitation and in situ growth process. In principle, the core of Si nanoparticles (Si NPs) can contribute to a high Li-storage capacity, the void space between the shell of LDH and the Si-core can effectively tolerate the volume expansion of Si NPs, and the shell can maintain the structural integrity and contribute to the electrochemical performance as well. As demonstrated, when used as the anode materials of LIBs, Si@NiAl-LDH exhibited much enhanced electrochemical performance as compared with the LDHs. The Si@NiAl-LDH electrode had a reversible capacity of 534 mAhg −1 after 60 cycles at 50 mAg −1 while that of NiAl-LDH was 343 mAhg −1 only. Regarding the rate performance, the Si@NiAl-LDH electrode could revert to 565 mAhg −1 after a rate test, while that of NiAl-LDH electrode was 353 mAhg −1 only. Obviously, the obtained clear structure-property relationship of the anode materials will be very conducive to the design and synthesis of the high-performance next-generation materials for energy storage and conversion.
研究领域:
材料科学
·
能源存储与转换
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）