MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Zhenting Zhao,Wenhong Shen,Guoqiang Yang,Haijuan Mei,Kai Li,Ke Li,Yang Lai,Ting Wang,Junfeng Zhao,Qiuyue Gui,Jie Hu,Weiping Gong
Accurate monitoring of blood glucose concentration is crucial for diabetes diagnosis. In this work, a three-dimensional hierarchical structure was fabricated by incorporating CoCu-layered double hydroxide onto flexible carbon foam (CoCu-LDH/FCF). Its porous, sponge-like architecture provides a high specific surface area and exposes abundant catalytic sites, thereby enhancing electrocatalytic performance for glucose sensing. The CoCu-LDH/FCF composite was immobilized onto a screen-printed electrode (SPE) to construct a portable sensor, designated as CoCu-LDH/FCF/SPE. The resulting sensor exhibits excellent electrocatalytic activity toward glucose oxidation, featuring a linear detection range of 2–500 μM, a sensitivity of 25.6 μA·μM −1 ·cm −2 , favorable selectivity, and long-term stability. Furthermore, a portable detection platform was developed by integrating the sensor with a flexible electrochemical integration module and a smartphone. Experimental results demonstrate the high performance of the CoCu-LDH/FCF/SPE sensor within this compact system.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Yue Zhao,Yingshi Zhu,Kangting Li,Yanfei Wei,Yuru Li,Tao Yu,Jianqiu Zhu,Xingwang Zhang
During the electro-Fenton (EF) process, the in-situ activation of H 2 O 2 at the cathode is an important strategy to minimize the ineffective consumption of H 2 O 2 and enhance the reaction efficiency. Accordingly, a structurally ordered FeNi-layered double hydroxide (FeNi-LDH) nanosheet array was in-situ grown on carbon felt (CF) by a simple hydrothermal method. A Fe 2+ -based aliovalent substitution strategy was employed to modulate the morphology and active sites of FeNi-LDH. On one hand, Fe 2+ facilitated the formation of abundant open reactive microspaces by regulating the nucleation rate, which was conducive to the exposure of active sites and the mass transfer process. On the other hand, the aliovalent substitution of Fe 2+ introduced more low-valent metal sites and surface defects (–OH), thereby activating the in-plane metal sites of FeNi-LDH. As a result, the bifunctional Fe(II)-FeNi-LDH/CF-0.5 cathode exhibited an excellent performance. At a low current density of 5 mA cm −2 and with NFX concentrations up to 40 mg L −1 , the EF system removed 92.59% of NFX within 15 min, with a pseudo-first-order kinetic constant of 11.67 × 10 −2 min −1 . As the dominant reactive species, hydroxyl radicals (•OH) originated from the combined contributions of both homogeneous and heterogeneous catalytic pathways. The density functional theory (DFT) calculations further revealed that the abundant surface hydroxyl groups were conducive to the adsorption and activation of H 2 O 2 . This work provides a novel material option for EF systems.
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Journal of Physical Chemistry Letters
·
2026
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IF 4.5
Vahid Daneshvariesfahlan,Yifei Xu,Shengyu Ma,Ping Xu,Qiang Fu,Yuming Huang,Bing Zhang,Mir Ghasem Hosseini,Jiheng Zhang,Yishen Cheng,Kaixi Wang,Bo Song
Ampere-level direct seawater electrolysis offers a sustainable approach for green hydrogen production, but its advancement is hindered by the competitive chloride evolution reaction (ClER) and catalyst corrosion at the anode. To overcome this limitation, we herein demonstrate a simultaneous surface and interlayer engineering of NiFe layered double hydroxide (LDH) anode by incorporating anionic surfactant (sodium dodecyl sulfate, SDS) through a facile anion exchange strategy. The dodecyl sulfate (DS) anion intercalation significantly expands the interlayer spacing and modulates the electronic structure of metal centers, thereby enhancing the intrinsic oxygen evolution reaction (OER) activity. Concurrently, the anionic groups anchored in the interlayer and adsorbed on the surface create a persistent electrostatic barrier that effectively repels Cl– ions. Consequently, NiFe LDH-SDS achieves 1.0 A cm–2 at low overpotentials of 311 mV and 353 mV in alkaline simulated and natural seawater, respectively, and delivers exceptional corrosion resistance and durability, operating stably for over 500 h in simulated and 380 h in natural seawater at 1.0 A cm–2, which far outperforms pristine NiFe LDH. More impressively, it sustains consistent performance for 500 h in overall seawater splitting at 1.0 A cm–2. This work offers a facile route to develop corrosion-resistant OER electrocatalysts for seawater splitting.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Xiang Zeng,Guoqing Xiao,Haiqing Zhang,Rutong Song,Yuemei Zhang,Yue Fan,Shuyu Fu,Chunlin Chen,Chunyan Chen
With the widespread use of epoxy resin (EP) in construction, higher demands are placed on its flame retardancy and weather resistance. This study develops a synergistic flame retardant strategy based on a multi-core-shell structure, consisting of a spherical mesoporous hollow silica (MHS) core, a cyclic polyphosphazene (PZS) inner shell, and a Ni, Al layered double hydroxide (LDH) outer shell. At 2 wt% addition, the EP composite achieves a limiting oxygen index (LOI) of 33.7% and passed the UL-94 V-0 rating. Meanwhile, the peak heat release rate (HRR) and total heat release (THR) decreased by 37.61% and 42.85%. Smoke release (TSR) and peak CO production rate (COP) decreased by 45.10% and 40.70% respectively, demonstrating remarkable flame retardancy and smoke suppression. MHS retains heat and inhibits diffusion, the PZS layer captures free radicals and enhances the char formation. And the Ni, Al-LDH shell releases non-flammable gases and catalyzes graphitization, realizing synergistic flame retardancy. Additionally, it improves interfacial compatibility and stress dispersion, enhancing mechanical and weather performance. Chemical resistance tests showed a 13.7% reduction in tensile strength after 30 days of HCl immersion, while ultraviolet (UV) aging caused minimal degradation. This research provides a promising approach for high-performance, multifunctional epoxy composites.
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DESALINATION
·
2026
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IF 9.9
Sehria Zia,Muhammad Kashif,Haojie Ge,Yafei Guo,Tianlong Deng
Mn-Co/Al-LDH enables efficient lithium capturing from Salt Lake Brines. • Fiber adsorbent exhibits excellent Li + selectivity, mechanical stability and durability. • PVDF@Mn-Co/Al-LDH design as fiber functionalization via wet spinning. • Dynamic uptake capacity of Li + 14.94 ± 1.23 mg·g −1 from Da-Qaidam Salt Lake. Lithium‑aluminum layered double hydroxides (LiAl-LDH) have been successfully used on a commercial scale to extract lithium from salt lake brine, their uncertain extraction procedure and inadequate Li + adsorption ability prevent further development of their uses. High selectivity of Li + has been achieved by the LDHs adsorption from high Mg/Li ratio salt lake brine, but zinc and titanium-based LDH adsorbents are unstable in acidic environments and pose environmental hazards. In this study, a novel trimetallic-based PVDF@Mn-Co/Al-LDH fibrous composite material with tunable properties is compared to bimetallic-LDHs. Density Functional Theory (DFT) is used to optimize the composite design and adsorption sites calculations. To approach the industrial application of Mn-Co/Al-LDH powder, it was further fabricated into porous nature fiber by wet spinning technology with cost effective PVDF form as strong binder with hydrophilicity exhibited Li + maximum adsorption capacity by 50% Mn-Co/Al-LDH fiber composition of 16.73 ± 1.02 mg.g −1 from Li + brine and the dynamic adsorption capacity is 14.94 ± 1.23 mg·g −1 with a 93% elution rate and 4–5% dissolution rate of Mn/Co ions. This synthetic fibrous composite adsorbent highlights a promising approach for evaluating LDH's potential in lithium extraction from rich‑lithium high Mg/Li ratio brine resources, due to its superior selectivity, adsorption/desorption performance and cyclic stability. Download: Download high-res image (139KB) Download: Download full-size image
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ACS Sustainable Chemistry & Engineering
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2026
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IF 7.6
Shengwang Mo,Da Song,Yang Li,YuChao Zhou,Zhao-Qing Liu,Zhen Huang,Fang He
Coupling renewable energy with seawater electrolysis for green hydrogen production represents a promising approach in energy storage and conversion. Yet, conventional anodic materials suffer from chloride corrosion and active-site blockage in seawater, causing rapid deactivation at high current densities. It is thus crucial to develop electrode materials with inherent corrosion resistance and high catalytic activity that can sustain operation at ampere-level currents in harsh seawater environments. In this work, we precisely engineered a NiFe layered double hydroxide (LDH) anode functionalized with adsorbed PO43– and SO42– anions. This modified catalyst demonstrates exceptional sustainability-relevant durability, operating continuously for over 140 h at an industrially relevant current density of 1100 mA cm–2 in an alkaline flow cell, while requiring an overpotential of only 201 mV to achieve 100 mA cm–2. Compared to the unmodified sample, the catalyst demonstrates significantly enhanced activity and corrosion resistance. Further mechanistic insights into the oxygen evolution reaction (OER) were gained through in situ spectroscopy and electrochemical differential mass spectrometry (DEMS). In situ Raman spectroscopy captured the dynamic reconstruction of the electrode material, leading to the formation of a stable active phase identified as NiFeOOH/PO43–/SO42–. By combining in situ 18O-isotope-labeled DEMS with ATR-FTIR spectroscopy, the compatibility between the conventional adsorbate evolution mechanism (AEM) and the lattice oxygen mechanism (LOM) during the OER was confirmed. The synergy of these two mechanisms was shown to further enhance the OER performance. The results establish that PO43–/SO42– adsorption plays a dual role: it electrostatically repels Cl– to mitigate corrosion, while simultaneously activating lattice oxygen to promote the LOM pathway, thereby improving surface reactivity. The anion adsorption strategy presented here offers valuable guidance for designing efficient and robust anode materials for seawater electrolysis.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Yunpeng Liu,Zhongxin Chen,Yunyi Yang,Ren Zou,Binglu Deng,Linxin Zhong,Kian Ping Loh,Xinwen Peng
The major bottleneck in self-powered water splitting devices by renewable energy lies in the kinetically sluggish oxygen evolution reaction (OER), which only produces low-value oxygen. Herein, we explore sucrose electrooxidation as an alternative anodic reaction for production of valuable chemicals at a reduced electricity consumption. By developing a reversible redox cycle of Ni 2+ /Ni 3+ and Co 2+ /Co 3+ in the CoNi layered double hydroxide (LDH), the required voltage of sucrose oxidation for 100 mA cm −2 is reduced by 240 mV compared to oxygen evolution. The sucrose electrooxidation by CoNi LDH is a two-step reaction including the electrooxidation of Ni 2+ /Co 2+ to Ni 3+ /Co 3+ and the spontaneous reaction between Ni 3+ /Co 3+ and sucrose. By feeding with natural sugarcane juice, a solar-driven electrolyser is assembled for the co-production of value-added formic acid and hydrogen. Our work demonstrates a sustainable route for integrating hydrogen production and biomass electrooxidation for energy applications.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Minghao Xu,Jiaojiao Yang,Bin Lu,Rufen Chen,Sen Wang,Hui Liu
In this study, the NiCo 4 -LDH with abundant surface oxygen vacancies (SOVs) was synthesized by a simple solvent thermal method, and was used to activate peroxymonosulfate (PMS) through heterogenous catalysis for ciprofloxacin (CIP) degradation. The OV-rich NiCo 4 -LDH/PMS system exhibited excellent CIP removal efficiency and rapid kinetics, as 95.0 % of the CIP was degraded within 10 min and the COD removal rate was 71.2 %. SO 4 •− , • OH, O 2 •− and 1 O 2 were involved in the degradation of CIP, with O 2 •− contributing the most, followed by SO 4 •− , • OH and 1 O 2 . Ethanol, as solvent, could modulate the intrinsic electron properties and produce abundant OVs on the surface of NiCo 4 -LDH, which enhanced the generation of O 2 •− . This study shed new light on the skillful design and application of heterogeneous catalysts for environmental remediation.
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INORGANIC CHEMISTRY
·
2023
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IF 4.6
Zihao Chen,Senjie Dong,Minghui Wang,Zunpeng Hu,Huiling Chen,Ye Han,Ding Yuan
Constructing three-dimensional (3D) hierarchical heterostructures is an appealing but challenging strategy to improve the performance of catalysts for electrical energy devices. Here, an efficient and robust flexible self-supporting catalyst, interface coupling of ultrathin CoFe-LDH nanosheets and Co3O4 nanowire arrays on the carbon cloth (CC/Co3O4@CoFe-LDH), was proposed for boosting oxygen evolution reaction (OER) in rechargeable liquid/solid Zn–air batteries (ZABs). The strong interfacial interaction between the CoFe-LDH and Co3O4 heterostructures stimulated the charge redistribution in their coupling regions, which improved the electron conductivity and optimized the adsorption free energy of OER intermediates, ultimately boosting the intrinsic OER performance. Besides, the 3D hierarchical nanoarray structure facilitated the exposure of catalytically active centers and rapid electron/mass transfer during the OER process. As such, the CC/Co3O4@CoFe-LDH catalyst achieved excellent OER catalytic activity in alkaline medium, with a small overpotential of 237 mV at 10 mA cm–2, a low Tafel slope of 35.43 mV dec–1, and long-term durability of up to 48 h, significantly outperforming the commercial RuO2 catalyst. More impressively, the liquid and flexible solid-state ZABs assembled by the CC/Co3O4@CoFe-LDH hybrid catalyst as the OER catalyst presented a stable open circuit voltage, large power density, superb cycling life, and satisfactory flexibility, indicating great potential applications in energy technology. This work provides a good guidance for the development of advanced electrocatalysts with heterostructures and an in-depth understanding of electronic modulation at the heterogeneous interface.
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CHINESE JOURNAL OF CATALYSIS
·
2023
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IF 16.5
Cheng Liu,Mengning Chen,Yingzhang Shi,Zhiwen Wang,Wei Guo,Sen Lin,Jinhong Bi,Ling Wu
Two ultrathin ZnTi-LDH nanosheets with different thickness (1.4 and 4.0 nm) were prepared to study the interplay between the active site and catalytic performance in photocatalytic synthesis of N -benzylideneanilline via a tandem reaction. ZnTi-LDH nanosheet possesses dual isolated active sites including the coordinatively unsaturated Ti atoms (Lewis acid sites) and the H atoms of OH groups (Brönsted acid sites), achieving the activation of benzyl alcohol and nitrobenzene via C–O···Ti species and N–O···H–O species, respectively. Photogenerated holes and electrons facilitate the oxidation of benzyl alcohol to benzaldehyde and the reduction of nitrobenzene to aniline, respectively. The thinner sample possesses more active sites, facilitating not only the activation of reactants but also the separation of photogenerated carriers. Therefore, a thinner ZnTi-LDH nanosheet shows the high conversion (100%) and the high selectivity (96%). Finally, a synergetic photocatalytic mechanism connected to the molecular activation is illustrated at the molecule level.
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Journal of CO2 Utilization
·
2022
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IF 8.321
Jia Li,Ge Gao,Yang Liu,Yang Li,Zhi Liu
Stimulating photocatalytic activity of layered double hydroxides (LDHs) have been being as a research hotspot in photocatalysis . Quantum dots doping is a well acknowledged strategy to utilize their photoelectric superiorities to overcome the intrinsic defects of pristine LDHs. In this work, waste biomass-derived carbon quantum dots (B-CQDs)-interspersed CoAl-LDH photocatalysts (B/CALs) are successfully prepared by means of a simple hydrothermal method from green and renewable points of view. The introduction of B-CQDs significantly broadens the light absorption range and capacity of CoAl-LDH. As the terminal electron acceptor , the highly-dispersed B-CQDs can effectively prolong the lifetime of photogenerated charge carriers and promote the separation of photogenerated electron-hole pairs. No assistance from any sacrificial agent , the optimal sample of B/CAL-2 exhibits significantly enhanced photoreduction activity of CO 2 -to-CO and CH 4 , 6.4- and 7.5-fold higher than those of the pristine CoAl-LDH, respectively, and also surpassing many reported high-level LDHs counterparts. Such an uncomplicated case guides a green and feasible route to modify semiconductor materials with renewable biomass, which is expected to be applied to others for enhanced photocatalytic activity.
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CRYSTENGCOMM
·
2022
·Vol. 24
·期 37
·6546-6557
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IF 3.756
Quan Zhou,Xingjian Dai,Kailin Li,Chenzhi Zhang,Xinfang Zhang,Zhilan Du,Shuang Yi,Pingan Yang,Jinsong Rao,Yuxin Zhang
Manganese dioxide@NiFe layered double hydroxide@montmorillonite (MNFM) with a nanoflower-like two-dimensional layered core–shell construction has been successfully synthesized by a two-step hydrothermal method. The structural and compositional influences on its electromagnetic wave (EW) absorption characteristics were discussed. MNFM with 8 mm thickness displayed excellent performance, which showed a minimum reflection loss (RLmin) of −21.8 dB at 15.4 GHz and an effective absorption bandwidth of 4.6 GHz. Meanwhile, RLmin was −13.5 dB at 13. 5 GHz when the thickness was 2.8 mm, and the effective absorption bandwidth was 3.31 GHz. The improved EW absorption performance may be attributed to the multilayer core–shell heterostructure leading to multipole relaxations and the ternary composite with excellent impedance matching. Hence, this work introduces a new idea for constructing core–shell clay-based nanocomposites, which are a promising material for EW absorption.
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