ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Yi Ma,Huan Ge,Yong Zhang,Ning Jian,Jing Yu,Jordi Arbiol,Canhuang Li,Yue Zhong,Luming Li,Hui Kang,Jun Wang,Andreu Cabot,Junshan Li
The electrocatalytic oxidation of small organic molecules, such as ethylene glycol (EG), can be paired with the hydrogen evolution reaction (HER) to effectively lower the overall cell voltage, thereby enhancing energy efficiency for hydrogen production. Moreover, the anodic EG oxidation reaction (EGOR) can generate valuable C1 and C2 compounds, offering a sustainable approach to greener chemical production. The industrial viability of this process requires nonprecious metal electrocatalysts that demonstrate high performance at low potential and exhibit high selectivity. In this study, we report on a cost-effective electrocatalyst based on a nickel sulfide phase (Ni3S2) heterogeneously nucleated on the surface of nickel–iron-manganese layered double hydroxide (NiFeMn-LDH) nanosheet arrays and supported on nickel foam (NF), demonstrating exceptional activity for the coupled HER and EGOR in alkaline conditions. This Ni3S2@NiFeMn-LDH/NF catalyst achieves an EG-to-formate faradaic efficiency of up to 90% at 1.5 V, with glycolate and oxalate as minor byproducts. Density functional theory calculations reveal that the EGOR was facilitated by the phase-separated Ni3S2, which lowers the energy barrier of the rate-limiting step. This work presents a promising, sustainable pathway for hydrogen production alongside value-added chemical generation from the electrooxidation of EG.
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高影响因子
Materials
·
2018
·Vol. 11
·期 5
·836
·
IF 2.467
Tianxiang Li,Zhengren Shi,Xianru He,Ping Jiang,Xiaobin Lu,Rui Zhang,Xin Wang
With the aim of improving the anti-aging properties of nitrile-butadiene rubber (NBR), a functional organic filler, namely LDH–SAS, prepared by intercalating 4-amino-benzenesulfonic acid monosodium salt (SAS) into layered double hydroxides (LDHs) through anion exchange, was added to nitrile-butadiene rubber (NBR), giving the NBR/LDH–SAS composites. Successful preparation of LDH–SAS was confirmed by XRD, TGA and FTIR. LDH–SAS was well dispersed in the NBR matrix, owing to its strong interaction with the nitrile group of NBR. The obtained NBR/LDH–SAS composites exhibited excellent thermo-oxidative aging resistance as shown by TGA-DSC. Further investigation by ATR-FTIR indicated that SAS can capture the radical groups, even during the aging process, which largely accounts for the improved aging resistance.Keywords:layered double hydroxides (LDHs);nitrile-butadiene rubber (NBR);4-Amino-benzenesulfonic acid monosodium salt (SAS);thermal oxidative aging resistance properties
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PubMed
高影响因子
SURFACE AND INTERFACE ANALYSIS
·
2025
·Vol. 58
·期 1
·35-53
·
IF 1.8
Anda Yu,Yulai Song,Nan Wang,Yong Tian,Hao Chen
Based on the evaluation of sustained-release performance in aqueous solution, sodium dodecyl sulfate (SDS) and phosphate ions were selected as two anionic corrosion inhibitors with excellent inhibition properties. Using hydrothermal treatment, co-precipitation, and anion exchange techniques, LDH-P + S coatings containing both SDS and phosphate and MgAl-LDH coatings intercalated with silicate, phosphate, and SDS were successfully fabricated. The microstructure and composition of the various LDH coatings were characterized using XRD, FT-IR, XPS, SEM, and EDS. The corrosion resistance and durability of the LDH coatings were assessed using EIS, PDP, and hydrogen evolution tests. All four LDH coatings demonstrated good corrosion protection, with the LDH-P + S coating exhibiting slightly superior corrosion resistance compared with the others. Single-frequency EIS analysis was conducted to evaluate self-healing properties, indicating that the LDH-P + S coating performed the best in restoring protection. The superior self-healing behavior is primarily ascribed to the combined contribution of phosphate-induced passivation and SDS-mediated adsorption barrier formation.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Wenning Yang,Jia Li,Jie Yang,Yong Liu,Zhipeng Xu,Xiaofan Sun,Fudong Wang,Dickon H.L. Ng
Biomass-derived hierarchically porous CoFe-LDH (layered double hydroxides)/CeO 2 hybrid possessing an inherent peroxidase-like activity was first fabricated employing kapok as bio-template. The CeO 2 fibers not only exhibited peroxidase-like activity, but also served as a support and guided the deposition of CoFe-LDH nanosheets on their surface to form a hierarchically porous network. The resultant CoFe-LDH/CeO 2 hybrid acted as a peroxidase mimic to catalyze 3,3′,5,5′- tetramethylbenzidine (TMB) with H 2 O 2 to generate a typical blue colored product. Furthermore, CoFe-LDH/CeO 2 hybrid displayed superior peroxidase-like catalytic property compared to the pristineCeO 2 and CoFe-LDH, which was attributed to the presence of more effective active sites of unique hierarchical-porous architecture and the synergistic effect between CoFe-LDH and CeO 2 . A facile and sensitive sensing system for H 2 O 2 and glucose determination was successfully proposed, which exhibited a sensitive response to glucose ranging from 0.05–2 mM with a detection limit of 0.015 mM based on the accelerated electron transfer between TMB and H 2 O 2 with the assistance of CoFe-LDH/CeO 2 . This paper offered a feasible way or the fabrication of materials with hierarchical structure and provided a new insight into seeking novel peroxidase mimics with boosted catalytic activities.
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高影响因子
ACS Applied Electronic Materials
·
2021
·
IF 3.314
Shaoling Cong,Yufei Yang,Kanshe Li,Fan He,Jian Liu,Hua Yuan,Xiaoqin Wang,Runlan Zhang,Jia Chu,Ming Gong,Bohua Wu,Shanxin Xiong,Anning Zhou
Metal organic frameworks (MOFs) have good porosity and adjustable morphology, which are always used as excellent sacrificial templates to derive high-performance layered double hydroxides (LDHs). Here, a humate-based ZIF-67 (HA–ZIF-67) template is first prepared by a natural precipitation method using humates as a substrate. And a humate-based NiCo–LDH (HA–NiCo–LDH) composite material is then successfully prepared via a solvothermal approach with ethanol as a protic solvent. Due to the special composite structure including NiCo–LDH nanocages assembled by interlaced nanosheets, suitable incorporation of layered humate substrate with graphitized microdomains and rich mesopores, the HA–NiCo–LDH exhibits a low resistance during the ionic diffusion, charge transfer, and electron conduction process, a large capacity of 1083 C g–1 (0.5 A g–1), and an excellent cycle stability with a capacity retention of 77% over 10000 GCD loops at 5 A g–1. The assembled asymmetric supercapacitor of the HA–NiCo–LDH//AC also has a decent capacity retention of 52% of initial value with the current density increasing from 0.5 to 10 A g–1, and a large energy density of 44.9 Wh kg–1 at a power density of 348 W kg–1. Its capacity retention is still high to 98% at 5 A g–1 over 5000 GCD loops. Hence, the moderate incorporation of humates is of great significance for practical applications of the NiCo–LDH in supercapacitors.
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高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
FuYin Lan,HaiYan Zhang,Jinchen Fan,Qunjie Xu,Hexing Li,YuLin Min
Herein, we introduce polymer nanofibers of TiO2@NiCo-LDH as interlayers into Li–S batteries. From 0 to 60 °C, the interlayers can deliver high sulfur utilization, an outstanding rate capability, and excellent cycling life. High-temperature excitation makes it easier for the valence band electrons of TiO2 to transition to the conduction band. The electron–hole pairs formed on the surface combine with the ether group of 1,3-dioxolane in the electrolyte, which greatly reduces the decomposition and volatilization rates of the electrolyte, ensuring Li–S batteries with good cycle performance at high temperatures. The capacity can stabilize at 798.6 mAh g–1 after 100 cycles at 60 °C and 1C, and the battery can provide a capacity higher than 323.2 mAh g–1 at 0 °C. Simultaneously, the lithium metal symmetrical battery with a functional separator can be continuously cycled for 1800 and 750 h without a short circuit at the current densities of 0.65 and 1.63 mA cm–2, respectively.
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高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2021
·Vol. 107
·期 1
·70-82
·
IF 2.326
Wang Kai,Liu Shanchi,Yang Mengxue,Jin Zhiliang
CdS and layered double hydroxides (LDHs) have drawn wide attention for photocatalytic water decomposition due to their abundant structure and excellent properties. The construction of a heterogeneous structure is a widely used method for a single material to overcome their narrow spectral light response and inefficient charge separation. In this work, a CdS/CoAl LDH step-scheme (S-scheme) heterojunction photocatalyst was successfully constructed by coupling CdS and CoAl LDH based on the complementary properties of the two materials. Compared with single CdS and CoAl LDH, the prepared CdS/CoAl LDH composite photocatalyst shows excellent photocatalytic hydrogen production efficiency by efficient use of electrons and holes under visible light irradiation. A significant number of electrons in the S-scheme heterojunction photocatalyst can be efficiently used to participate in water splitting while the holes were consumed by the sacrificial reagent. Therefore, the building of the S-scheme heterojunction eventually improved the efficiency of photocatalyst hydrogen production by efficiently separating electrons and holes. At the same time, our work will provide a new approach for the practical application of such semiconductors.
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高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Lingling Zhang,Yumei Luo,Qingyong Wang,Dan Wei,Haopan Hu,Peixiu Yan,Xu Feng,Shujun Qiu,Fen Xu,Weiping Cao,Lixian Sun,Hailiang Chu
The exploration of transition metal-based electrode materials for asymmetric supercapacitors has garnered considerable interest owing to their potential to achieve high-energy storage and demonstrate outstanding electrochemical performance. In this study, we designed and synthesized Zn-doped NiCo layered double hydroxide (LDH), a hollow supercapacitor electrode material, through a facile ion exchange method at room temperature . Doping Zn ions results in an increased interlayer spacing expanding from 0.815 nm (ZIF-67@NiCo-LDH) to 0.874 nm (ZnNiCo-LDH-7), which facilitates sufficient penetration of the electrolyte and accelerates the charge transfer kinetics. Moreover, by employing the metal-organic framework ZIF-67 as a precursor, ZnNiCo-LDH nanosheets assembled in hollow nanocages exhibit remarkable electrochemical performance due to their large contact area with electrolytes and superior electrical conductivity . The synthesized ZnNiCo-LDH electrode material achieves a high specific capacitance of 1908 F g −1 at 1 A g −1 . When integrated into an asymmetric supercapacitor , in combination with activated carbon (AC), the device delivers an outstanding energy density of 41.5 Wh kg −1 at a power density of 825 W kg −1 . Notably, the assembled device shows exceptional cycling stability, retaining 120 % of its initial specific capacitance even after 5000 cycles at a current density of 5 A g −1 . The extraordinary performance and remarkable stability are mainly due to Zn ion doping-induced local lattice expansion and the hierarchical hollow nanocage structure, which underscores its highly promising potential in supercapacitor applications.
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高影响因子
Small
·
2022
·Vol. 18
·期 46
·2204303
·
IF 15.153
Yongxin Qian,Yubo Luo,Abubakar Yakubu Haruna,Bo Xiao,Wang Li,You Li,Tianshun Xiong,Qinghui Jiang,Junyou Yang
The sharp reduction in size and increase in power density of next-generation integrated circuits lead to electromagnetic interference and heat failure being a key roadblock for their widespread applications in polymer-based electronic packaging materials. This work demonstrates a multifunctional epoxy-based composite (MDCF@LDH/EP) with high electromagnetic wave (EMW) absorption, thermal conductivity, and flame retardancy performance. In which, the synergistic effect of porous structure and heterointerface promotes the multiple reflection and absorption, and dielectric loss of EMW. A low reflection loss of −57.77 dB, and an effective absorption bandwidth of 7.20 GHz are achieved under the fillings of only 10 wt%. Meanwhile, a 241.4% enhanced thermal conductivity of EP is due to the high continuous 3D melamine-derived carbon foams (MDCF), which provides a broad path for the transport of phonons. In addition, MDCF@LDH/EP composite exhibits high thermal stability and flame retardancy, thanks to the physical barrier effect of MDCF@LDH combined with the high temperature cooling properties of NiAl-LDH-CO 3 2− . Compared with pure epoxy resin, the peak heat release rate and the total heat release rate are reduced by 19.4% and 30.7%, respectively. Such an excellent comprehensive performance enables MDCF@LDH/EP to a promising electronic packaging material.
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高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Yanxue Guan,Juan Qin,Xinyue Guo,Zongjia Li,Haoran Guo,Miaomiao Zhang,Bailin Zhang,Jilin Tang
Nickel-aluminum layered double hydroxides (Ni-Al LDHs) are widely used in energy storage and conversion devices, and the impact of the Ni/Al molar ratio on the structural evolution and kinetic process is of great significance for improving reaction kinetics and efficiency. In this paper, the morphological evolutions and nanomechanical property changes of Ni-Al-n LDH (n is the Ni/Al molar ratio) nanosheets during potential cycling were explored by in situ electrochemical atomic force microscopy. The conversion of Ni2+ into Ni3+ and the amphoteric properties of Al3+ during potential cycling resulted in the dissolution of Ni-Al-n LDH nanosheets. The dissolution rate of Ni-Al-2 LDH nanosheets was slower than those of Ni-Al-2.5 LDH and Ni-Al-3 LDH nanosheets. Meanwhile, the Young’s modulus value of the dissolved area was much larger than that of the undissolved area, and the dissolved area exhibited a harder property. It was attributed to the different microcrystalline structures of Ni-Al LDH nanosheets affected by the Ni/Al molar ratio and the rearrangement of Ni2+ and Al3+ during the reaction. The slow dissolution of Ni-Al-2 LDH nanosheets was beneficial to improving the electrochemical performance, while the fast dissolution of Ni-Al-2.5 LDH and Ni-Al-3 LDH nanosheets was not conducive to the electrochemical performance. Understanding the effect of the Ni/Al molar ratio on the morphological evolutions and nanomechanical property changes of Ni-Al LDH nanosheets during potential cycling has important guiding significance for the subtle compositional modification and structural design of Ni-Al LDHs as an electrode material.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Tao Li,Weikun Sun,Jian Zhang,Shengqin Liu,Hongbin Chen,Zumin Qiu,Jason Chun-Ho Lam
Herein, an efficient and stable catalyst of Co 3 O 4 @LDH-AC was innovatively prepared through uniform loading of an activated carbon substrate with Mg/Al layered double hydroxide (Mg/Al-LDH) followed by dispersing Co 3 O 4 nanoparticles in the confined space of LDH. This unique flower-like spherical structure significantly improved the adsorption capacity and would increase the concentration of reactants in the confined space. Experimental results showed that levofloxacin (LFX) completely degraded in 4 min with the addition of µM peroxymonosulfate (PMS). The fast conversion of Co 2+ and Co 3+ in catalyst for the generation of highly reactive species is revealed via EPR, in-situ Raman, in-situ FT-IR, and XPS. Further tests of 5Co 3 O 4 @LDH-AC in effluent of hospital wastewater treatment showed that it not only possessed strong anti-interference capabilities, but also maintained stable catalytic activity in fixed-bed reactor for a long operation time. Therefore, the excellent catalytic performance in confined space offers the possibility of application for the degradation of micropollutants in real pharmaceutical wastewater discharged from hospital (800–1200 tons/day, COD > 150 mg/L).
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Fu Xingyu,Chang Shufang,Sun Xiaoqin
Photocatalysis-peroxymonosulfate (PMS) activation system is regarded as a promising strategy for antibiotic degradation. Herein, a type-II SnS 2 /NiFe LDH heterojunction assembled by nanosheets was constructed to realize the dual modulation of photogenerated carrier directional migration and PMS activation sites. The intimate and large coupled interface facilitated the charge separation and transfer. And the optimization of the electronic structure in the heterojunction enabled good visible light absorption capacity. Benefiting from the construction of type-II heterojunction, the Fe 2+ /Fe 3+ and Ni 2+ /Ni 3+ redox cycles in SnS 2 /NiFe LDH had been greatly improved, which further promoted the PMS activation. The constructed heterojunction achieved excellent metronidazole (MNZ) degradation performance (93.9% removal within 30 min) via PMS activation-assisted photocatalysis under visible light irradiation, which was greatly enhanced compared to the control conditions of photocatalysis without PMS (3.5%) or without light irradiation (78.1%). It also demonstrated excellent stability and functioned well across a wide pH range (3–11). The quenching experiments revealed that ·OH and h + were the main reactive species for MNZ oxidation. The mechanism analysis further confirmed that the transfer of photogenerated carriers was consistent with the type-II mode. This study is expected to provide new insights into design and application of type-II heterojunction in PMS activation for efficient wastewater treatment. Graphical abstract
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高影响因子
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