SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Ying Zhang,Ruohan Li,Wenying Sun,Wei Mao,Yibing Li,Lixun Zhang,Yuntao Guan
The pervasive contamination of tetrabromobisphenol A (TBBPA) presents a critical environmental challenge due to its persistence and resistance to conventional degradation. Although sulfidized nanoscale zero-valent iron (S-nZVI) represents a promising remediation avenue, its efficacy is severely constrained by particle agglomeration and insufficient mineralization capabilities. Here, we report a self-dissociation-assembly strategy to engineer a robust S-nZVI composite supported on Mg Al layered double oxides (S-nZVI@LDO) for the substantial removal of TBBPA. By modulating the precursor synthesis pathways, we demonstrate that the hydrothermal-derived LDO support (α-phase) creates a unique nanosheet architecture that facilitates superior dispersion of reactive Fe/S species compared to chemically precipitated counterparts. The optimized S-nZVI@LDO α composite achieves >95% TBBPA removal efficiency, with a debromination efficiency of 71% and a mineralization rate of 51%, significantly outperforming traditional composites. Mechanistic investigations reveal a synergistic pathway involving rapid electrostatic adsorption, reductive debromination driven by surface-bound Fe 0 , and oxidative mineralization via in-situ generated radicals. Furthermore, the catalyst exhibits improved stability and reusability over multiple cycles. This work elucidates the critical role of precursor structural evolution in catalyst design and provides a scalable, high-efficiency solution for the remediation of halogenated organic pollutants.
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ACS Catalysis
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2026
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IF 13.6
Guosong Wang,Dong Zhang,Yihui Song,Haitao Meng,Dan Li,Chong Peng
Abstract Hydrodeoxygenation (HDO) of lignin derivatives is a promising strategy for biomass utilization, but its catalytic performance is often unsatisfactory for non-noble metal catalysts. This hinders the industrialization process of biomass utilization. Herein, we obtained a FeNi-Cop catalyst with a tightly coupled interface between FeNi alloy and NiO by a hydrotalcite-derived strategy. The effect of this interface on the p-cresol HDO was studied by XRD, HRTEM, H2-TPR, NH3-TPD, XPS, in situ FTIR, and DFT calculations. FeNi-Cop catalyst facilitates hydrogen activation and can promote the dehydration reaction of methylcyclohexanol, a key intermediate, through the electronic regulation of the interface and acid sites. High space-time yield (STY) of methylcyclohexane was obtained, and good catalytic performance could be maintained after 10 cycles. This tightly coupled alloy/oxide interface provides a feasible approach for the design of non-noble metal catalysts.
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ACS ES&T Water
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2026
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IF 4.5
Wencong Wang,Mingming Wang,Xianglei He,Yufeng Yang,Hui Yang,Takeshi Yanagihara
Lithium/aluminum layered double hydroxides (Li/Al-LDHs) have been widely studied for lithium extraction due to their favorable adsorption capacity and outstanding ion selectivity; however, practical applications are limited by the difficulty of SO42– intercalation–induced lithium desorption and structural delamination. In this study, siloxane networks after hydrolysis and polymerization of methyltrimethoxysilane (C4H12O3Si) were employed as cladding layers to cover the surfaces of Li/Al-LDHs, aiming to suppress SO42– intercalation and enhance the structural integrity, thereby mitigating delamination. The resistance effect is positively correlated with the thickness of the cladding layer. The adsorption capacity of the optimal sample after 8 cycles was increased by 50% compared to the pristine Li/Al-LDH. Additionally, its separation coefficients for Li/K, Li/Na, and Li/Mg─specifically 50.82, 50.47, and 149.74─significantly outperformed those of pristine Li/Al-LDH.
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Journal of Environmental Chemical Engineering
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2026
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IF 7.5
Mengzhen Du,Tao Niu,Ximin Wang,Chenxin Xie,Fei Li
Traditional oil-water separation technologies are often ineffective for various types of highly stable oil-water emulsions. In this study, magnesium aluminum layered double hydroxide (MgAl-LDH) and fluorosilane (CF₃-Si-O-) were introduced into carbon fiber cloth (CC) via a combination of the hydrothermal method and the impregnation method. By leveraging the synergistic effect of micro-nano structures and functional groups, superhydrophobic and superoleophilic carbon-based composites (denoted as CMAF) with excellent oil-water separation performance were successfully fabricated. The resulting CMAF exhibits a water contact angle (WCA) of 158°, achieves a separation efficiency of 99% for water-in-oil (W/O) emulsions, and delivers a treatment flux of 386.86 L·m⁻²·h⁻¹. In addition, CMAF demonstrates good cyclic stability and environmental adaptability: it maintains a separation efficiency of over 99% after 10 cycles, and retains stable hydrophobicity across a wide pH range. This material offers a new solution for efficient oil-water separation and holds broad application prospects.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Xiao-qiang Feng,Min Zhou,Rui-xian Li,Yan-chi Wang,Xiao-fang Li
Constructing Z-scheme heterojunctions represents a highly effective strategy for enhancing photocatalytic performance. In this study, a novel P-doped g-C 3 N 4 (PCN) modulated NiFe-LDH Z-scheme heterojunction photocatalyst (NiFe-LDH/PCN) was fabricated by hydrothermal method. The photocatalytic activity of the obtained NiFe-LDH/PCN was assessed by degrading organic dye Congo red under visible light irradiation. The results indicated that the obtained NiFe-LDH/PCN exhibited exceptional photocatalytic performance, with the optimal sample NiFe-LDH/PCN-3 achieving a 95% CR degradation rate within 90 min. The photocatalytic efficiency was 17 times higher than that of pristine PCN and 4.3 times higher than that of NiFe-LDH alone. The significant enhancement in photocatalytic activity can be attributed to the effective separation and transfer of photogenerated charges, facilitated by the formation of the Z-scheme heterojunction between NiFe-LDH and PCN. The involvement of active species, such as superoxide radicals (·O₂⁻), hydroxyl radicals (·OH), and photogenerated holes (h⁺), was confirmed during the degradation process. The present study provides valuable insights into the design of efficient photocatalysts for environmental applications and highlights the potential of Z-scheme heterojunctions to significantly boost photocatalytic performance.
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高影响因子
Materials Today Chemistry
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2026
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IF 7.4
Guorong Liu,Fangyu Zhang,Wendan Yang,Xiaofeng Sun,Yanyan Dai,Jinyuan Ma,Zao Yi
Ni 0.9 Cu 0.1 Co-LDH/15ReS 2 hollow nanocages was constructed. • The introduction of Cu into NiCo-LDH not only enhanced visible light absorption but also effectively suppresses the recombination of photogenerated carriers. • The BEF formed at the interface between Ni 0.9 Cu 0.1 Co-LDH and ReS 2 can facilitate the spatial separation and directional migration of photogenerated carriers. • The mechanism is explained through the complementary combination of experimental analysis and theoretical calculation. • Outstanding operational stability. The pursuit of efficient and stable photocatalysts for solar-driven hydrogen evolution is critical to addressing the global energy crisis. Herein, a novel S-scheme heterojunction is constructed by integrating ReS 2 particles onto Cu-doped NiCo-layered double hydroxide (Ni 1-x Cu x Co-LDH) hollow nanocages, synthesized via an “etch and grow” method using ZIF-67 as a template. The optimized Ni 0.9 Cu 0.1 Co-LDH/15ReS 2 composite achieves a hydrogen precipitation rate of 4.17 mmol g −1 h −1 under the illumination of visible light, which is 5.48-fold and 3.11-fold higher than those of pristine NiCo-LDH and ReS 2 , respectively. This performance improvement is attributed to the synergy of three key factors. (i) Cu doping effectively modulates the electronic structure of the LDH, introduces defect levels to narrow the bandgap (from 2.1 eV to 1.9 eV) for enhanced visible light absorption, and serves as charge balancer to suppress carrier recombination. (ii) The formation of an ordered heterostructure between Ni 0.9 Cu 0.1 Co-LDH and ReS 2 at their interface creates a built-in electric field that promotes the spatial separation and directional migration of photogenerated charge carriers, markedly reduces the likelihood of their recombination. (iii) The heterojunction exhibits a large specific surface area (109.23 m 2 /g), which effectively exposes more catalytic active sites and prolongs the light propagation path, thereby enhancing surface reaction efficiency and light utilization. The composite also exhibits outstanding stability, retaining 96% of its initial activity after four photocatalytic cycles. Combined theoretical calculations and experimental analyses confirm that the well-matched band alignment and robust interfacial interaction enable effective spatial separation of photogenerated carriers while preserving strong redox potentials. The work demonstrates a very promising strategy for designing high performance LDH-based S-scheme heterojunctions toward sustainable solar-to-chemical energy conversion.
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JOURNAL OF MOLECULAR STRUCTURE
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2026
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IF 4.9
Yanling Hu,Yanshu Chen,Ruitong Li,Ximan Wang,Sigen A,Yunfeng Wu,Dehui Bian,Siqi Bao
Constructed an S-scheme g-C 3 N 4 /Ce-MgAl-LDH heterojunction via hydrothermal method. • Achieved complete TC-HCl degradation in 20 min under visible light with H 2 O 2 synergy. • Identified superoxide radicals as dominant species and proposed three degradation pathways. • Revealed enhanced charge separation via Ce doping and S-scheme interfacial transfer. • Demonstrated 85.3% stability after five cycles with reduced ecotoxicity of intermediates. Antibiotic contamination, especially by tetracycline hydrochloride (TC-HCl), presents significant environmental and health challenges. In this study, a 3D flower-like g-C 3 N 4 /Ce-MgAl-LDH composite was synthesized for effective TC-HCl degradation. In situ XPS and DFT calculations confirmed that the formed S-scheme heterojunction enhances charge separation while maintaining strong redox capabilities. Response surface methodology (RSM) identified pH as the key factor influencing degradation efficiency. Under optimized conditions, the catalyst achieved complete TC-HCl removal within 20 min and a mineralization efficiency of 39.8% based on TOC analysis. Quenching experiments and EPR spectroscopy revealed superoxide radicals (·O 2 - ) as the primary reactive species. The composite also demonstrated excellent environmental adaptability, broad-spectrum activity, and cyclic stability, retaining 85.3% of its activity after five successive cycles. This work combines an advanced S-scheme photocatalyst design with RSM-guided optimization, offering a practical strategy for antibiotic wastewater treatment. Mechanism diagram of TC-HCl degradation in the CN/LDH-15%/H 2 O 2 /Vis system Download: Download high-res image (190KB) Download: Download full-size image
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Science China-Chemistry
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2026
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IF 9.8
Tang Ruixin,Li Xiaolin,Li Ying,Hao Qiuyan,Huang Wenjie,Liang Limin,Deng Yida,Zheng Xuerong,Liu Hui
The sluggish oxygen evolution reaction (OER) hinders efficient water splitting, with conventional adsorbate evolution mechanisms (AEM) facing inherent activity limitations. While the lattice oxygen activation mechanism (LOM) offers a promising pathway for enhanced activity, its practical implementation often grapples with stability issues, especially under industrial-level conditions. Herein, we report a novel ultrathin, bilayer high-entropy MoMnFeCoNiCu LDH nanosheet with a unique graphene-like wrinkled morphology. The strategic introduction of high-valent molybdenum triggers a fundamental shift in the OER mechanism from AEM to LOM, as unequivocally confirmed by in situ Raman spectroscopy and 18 O isotope gas-phase mass spectrometry. This unique Mo-triggered lattice oxygen activity leads to excellent performance: the catalyst achieves a remarkable 235 mV overpotential at 10 mA cm −2 in alkaline media, and maintains 500 h stability at 200 mA cm −2 . Crucially, when integrated into an anion exchange membrane water electrolyzer (AEMWE), our catalyst demonstrates excellent stability by maintaining consistent performance at an unprecedented 1.0 A cm −2 for 200 h, highlighting its immense potential for industrial-scale water electrolysis.
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ELECTROCHIMICA ACTA
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2025
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IF 5.6
Rouyan Guo,Congcong Dang,Yiping Liu,Guangqi Zhang,Lingti Kong,Liancheng Zhao,Liming Gao
Developing an efficient and highly catalytic cathode is crucial to the advancement of rechargeable Li-O 2 batteries for utilizing their high theoretical energy density. However, due to the sluggish kinetics of the oxygen-involved reactions, the problems of short lifespan and large overpotential prevent their widely practical applications. Thus, cathodes are designed to enhance the adsorption capacity for oxygen and modulate the electron mobility for Li-O 2 batteries. Herein, NiAl layered double hydroxide (LDH)@Cu 2 S heterostructure with extremely large specific surface area and numerous exposed active sites is designed, combining snowflake-shaped Cu 2 S and dispersed two-dimensional layered NiAl LDH. Excitingly, NiAl LDH@Cu 2 S cathode exhibited a large specific discharge capacity of 14,519 mAh g -1 at a current density of 100 mA g -1 and prolonged cycle life up to 275 cycles at 300 mA g -1 with a cut-off capacity of 600 mAh g -1 , accompanied by a low discharge overpotential of 0.14 V at the first cycle. Theoretical calculations demonstrated that the excellent electrochemical performance stems from the optimized adsorption energy of the NiAl LDH@Cu 2 S structure for reactants and intermediate products, which reduces the energy barrier of discharge/recharge process. Therefore, benefited from the modulation of electron mobility and the promoted adsorption of oxygen, NiAl LDH@Cu 2 S heterojunction can display remarkable cycle stability and reversibility as the cathode catalyst, suggesting great application prospects for enhanced Li-O 2 batteries.
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Yuehan Zhang,Panpan Zhao,Zhixuan Yu,Jianguo Zhao,Junfeng Zhai,Shaojun Dong
The efficient conversion of renewable biomass into value-added products is essential for sustainable development. In this work, we report a two-chamber photocatalytic fuel cell (PFC) consisting of a NiFe-LDH/BiVO4/FTO photoanode and a BOD/TCPP/BP/ITO biocathode, which allows for the simultaneous accomplishment of energy conversion and bias-free production of 2,5-furandicarboxylic acid (FDCA). After optimization, the PFC achieves a maximum power density of 859.0 ± 3.0 μW cm–2 at 0.52 V. TEMPO-mediated 5-hydroxymethylfurfural (HMF) oxidation occurs spontaneously within the PFC upon illumination due to the potential difference between the photoanode and biocathode, effectively and selectively converting HMF to FDCA with a yield (%) and Faradaic efficiency of approximately 100%, and possesses good durability after six cycles (30 h) of FDCA production (retaining 90.8% of its initial value). Therefore, the proposed PFC offers a promising solution to the challenges associated with the conversion of renewable biomass.
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PubMed
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2026
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IF 17.7
Yi Ma,Huan Ge,Yong Zhang,Ning Jian,Jialing Tang,Zongkun Hu,Jing Yu,Jordi Arbiol,Canhuang Li,Luming Li,Andreu Cabot,Junshan Li
Waste plastics present a significant threat to ecosystems and human health, necessitating efficient and cost-effective solutions for their conversion into high-value products. This study introduces a novel electrochemical reforming strategy to upgrade polyethylene terephthalate (PET) into valuable chemicals, primarily formic acid, while simultaneously generating hydrogen. A highly efficient electrocatalyst composed of nano-arrays of silver and NiFe layered double hydroxide (LDH) is synthesized via a hydrothermal and photo-precipitation process on a nickel foam substrate. This advanced catalyst achieves selective electrochemical conversion of ethylene glycol (EG) as PET hydrolysate to formate and glycolate with Faradaic efficiencies of 85% and 13% at 1.5 V vs . the reversible hydrogen electrode, with a stable and high current density. Density functional theory calculations reveal that the synergistic interaction between Ag and NiFe-LDH optimizes the adsorption and desorption of key intermediates on the catalytic sites, resulting in superior activity, selectivity, and stability for the electrochemical EG oxidation reaction. These findings highlight the potential of this catalyst for sustainable plastic waste valorization and renewable hydrogen production.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Feng Li,Dan Zhou,Yaoping Guo,Keng Xuan,Yingqi Wang,Ying Zheng,Xuegang Wang,Zhanxue Sun,Yadan Guo
The contamination of water by soluble hexavalent uranium (U(VI)) requires the development of highly active and stable treatment materials. This study presents a rational design for a heterostructured photocatalyst by coupling phosphorus-modified graphitic carbon nitride (PCN) with NiAl-layered double hydroxide (NiAl-LDH). The structural theory was that P-doping would tailor the optoelectronic properties of g-C₃N₄, while integration with NiAl-LDH would establish a synergistic system for concurrent adsorption and photoreduction. As anticipated, the P modification inhibited crystal growth and improved charge separation in g-C₃N₄, elevating its U(VI) reduction rate by 3.67-fold. The NiAl-LDH component provided a high-specific-surface-area substrate for pollutant enrichment. The resulting optimal NiAl-LDH/PCN composite formed a Type-II heterojunction, which directed efficient charge transfer between the two phases. Under simulated sunlight, the composite achieved high removal efficiencies of 96.0% for U(VI) and 95.2% for Cr(VI). The performance stems from a synergy where NiAl-LDH concentrates target ions at the interface, and PCN furnishes photogenerated electrons via facilitated charge transfer, thereby accelerating the photoreduction kinetics. The material also demonstrated robust reusability and effectiveness in treating actual wastewater, highlighting its strong potential for practical heavy-metal-ion remediation.
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