APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Tongzhou Li,Xiao Lin,Hongjie Zhang,Feng Xie,Wen-Feng Lin,Zhigang Shao
Direct seawater electrolysis (DSE) is extremely promising for green hydrogen production as it avoids using scarce freshwater resources, but it faces inherent challenges including slow hydrogen evolution reaction (HER) kinetics at the cathode, active-site blockage by insoluble Mg 2 + /Ca 2+ hydroxides precipitation and chloride corrosion. Herein, we report a high performance HER electrode based on Pt@Co(OH) 2 nanoarrays supported on Nickel foam for DSE, where the dual-catalytic sites on Pt and Co adsorbed *H and *OH, respectively, efficiently promoting water dissociation. The electronic interaction between Pt and Co facilitated the desorption of *H and inhibited the adsorption of Cl - on the electrode. Moreover, positively charged Pt@Co(OH) 2 nanoarrays significantly suppressed Mg 2+ /Ca 2+ migration to the electrode surface, and the ordered pore structure enabled efficient bubble-induced removal of possible precipitation. A pH-asymmetric electrolyzer was assembled with the cathode that achieved a benchmark current density of 100 mA cm −2 with a low voltage of 1.675 V at 80 ℃, and it operated continuously for 1000 h at 100, 200, 500, 800 and 1000 mA cm −2 without significant degradation. This work provides a synergistic strategy to simultaneously overcome the persistent challenges of reactivity and stability of the cathode in DSE, enabling sustainable industrial-scale green hydrogen production.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Qing Zhou,Shunshun Jia,Qimeng Wang,Fanxiang Gu,Haifeng Bian,Ge Xue,Haoran Wang,Yujie Ma,Jian Gu,Jun Ma,Xiangkang Meng
The practical application of aqueous Zn-ion batteries (AZIBs) is hindered by Zn dendrites, hydrogen evolution reaction (HER), and corrosion/passivation of Zn anodes. Herein, a Zn-philic Cu layer is first fabricated on Zn anodes, which not only physically covers scratches and fills defects on Zn anodes but also utilizes the high zincophilicity of Cu to guide uniform Zn deposition. A densely packed Zn 5 (OH) 8 Cl 2 ·H 2 O nanosheets (nZCH) layer is formed on Cu layer, which not only selectively adsorbs H 2 O and repels SO 4 2− to inhibit corrosion/passivation but also prevents electron leakage during Zn deposition in inner Cu layer due to the insulating nature to electrons, thereby suppressing HER. As a result, nZCH-Cu@Zn||nZCH-Cu@Zn symmetric batteries achieve ultra-stable cycling for over 4800 h at 1 mA cm −2 and 3600 h at 5 mA cm −2 . It should be emphasized that both Cu layer and nZCH layer constructed in this paper are obtained through a simple and low-cost one-step in-situ configuration strategy. The three-dimensional structure of nZCH facilitates electrolyte diffusion, ensuring uniform distribution of Zn 2+ concentration and electric field. Moreover, nZCH is a genuine passivation layer with a dense structure. Its presence inhibits the formation of loose pseudo-passivation Zn 4 SO 4 (OH) 6 ·xH 2 O layer, solving the long-standing passivation problem on Zn anodes. The top hydrophilic nZCH layer facilitates Zn 2+ de-solvation, repels SO 4 2− , and adsorbs H 2 O to suppress side reactions, while the bottom Zn-philic Cu layer provides abundant nucleation sites for dendrite-free Zn deposition. Download: Download high-res image (192KB) Download: Download full-size image
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CERAMICS INTERNATIONAL
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2026
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IF 6
Jun Yu,Xianwei Zhao,Yongjun Chen,Azhu Wang,Pei Li,Yuzhe Wang,Haining Chen,Huicong Liu,Hui Ye,Weiping Li
Ga-doped zinc oxide (GZO) has attracted considerable interest for applications in electronic transport owing to its superior electrical properties. In this study, we report a low-temperature (<100°C) aqueous open-system route for the in-situ synthesis of GZO powders. The efficient substitutional doping of Ga 3+ into the ZnO lattice is achieved via a formation, in-situ transformation and dissolution–reprecipitation pathway of ε-Zn(OH) 2 or ZnGa-layered double hydroxide (ZnGa-LDH) intermediates, which simultaneously endows the products with unique flower-like or bundle-like morphologies. Chemical equilibrium calculations and time-dependent experiments reveal that the ionic species Zn(NH 3 ) 4 2+ and Ga(OH) 4 - , formed in the aqueous solution under high ammonia concentration, serve as reactive monomers that facilitate the formation and transformation of the intermediate phases. Electrical measurements combined with UV-Vis-NIR, EPR, and PL spectroscopic analyses indicate that Ga doping introduces shallow donor-type defects alongside zinc vacancy-related acceptor defects into the ZnO lattice, narrowing the optical bandgap and enhancing the electrical conductivity of the resulting powders. The GZO powder with a nominal doping ratio of 5% exhibits the lowest resistivity (Surface resistivity measured by the four-probe method is 3.43 × 10 4 Ω/□). This work provides a new pathway for the controllable preparation of functional conductive oxide powders.
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ACS Catalysis
·
2025
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IF 13.1
Xuefen Song,Haoren Zheng,Jie Zhang,Xuejiang Zhang,Jian Cui,Muhammad Ayyob,Chuangwei Liu,Panpan Su,Zhongwei Chen
The development of Ru-based electrocatalysts with superior activity and stability for proton exchange membrane water oxidation remains a significant challenge. A key strategy is the precise engineering of the lanthanide–O–Ru structure to tailor surface species and continuously modulate Ru–O covalency, thereby optimizing the adsorption energy of intermediate species for enhanced catalytic performance. In this study, density functional theory (DFT) calculations predict that incorporating the late lanthanides (Tm–O–Ru) into the RuO2 structure significantly enhances the density of states near the Fermi level to a greater extent than the middle lanthanide (Gd–O–Ru). This leads to a lower energy barrier for *OOH as the rate-determining step of the oxygen evolution reaction (OER). Additionally, the strength of *OH adsorption follows the Tm–O–Ru > Gd–O–Ru > RuO2 trend. Experimental results confirm the theoretical predictions: Tm–O–Ru structure enhances the Ru–O covalency, tunes the electronic structure of Ru, and optimizes *OH adsorption. These modifications result in good OER performance with an overpotential of 201 mV and robust stability over 1000 h at 10 mA cm–2. Furthermore, a Tm–RuO2-based PEMWE device stably operates at 100 mA cm–2 for 200 h with a low degradation rate of 0.195 mV h–1, outperforming most Ru-based catalysts reported in the literature.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jiahui Liu,Hongchen Liu,Fan Yang,Junpu An,Siyuan Sun,Yang Sun,Kexin Wei,Xinyang Sun,Junwei Yuan,Meitong Zhao,Haojia Zhong,Kuobo Wang,Jintian Ren,Zhenxing Li,Yongfen Li
The electrochemical oxidation of biomass-derived 5-hydroxymethylfurfural (HMF) represents a promising pathway to synthesize the critical polymer monomer 2,5-furandicarboxylic acid (FDCA). However, the restricted adsorption of both HMF and OH − to the catalyst surface results in low activity and selectivity. To address this issue, this study introduced an electrochemically assisted strategy to synthesize Ni aerogel with Cu heteroatom doping (Ni 0.94 Cu 0.06 /NF), demonstrating excellent performance for HMF to FDCA conversion in alkaline media. The catalyst achieves 10 mA cm −2 at 1.307 V vs. RHE, with outstanding Hydrogen evolution reaction (HER) activity (10 mA cm −2 @11 mV). Notably, the conversion rate of HMF, the selectivity of FDCA and the Faraday efficiency can reach 99.5 %, 99 % and 97 %, respectively. Scanning Electron Microscope (SEM) and transmission electron microscopy (TEM) demonstrated that the aerogel's self-supported 3D framework with interwoven nanowire structure enables efficient exposure of catalytic sites. X-ray photoelectron spectroscopy (XPS) analysis further showed the modification with Cu forms unique Ni O Cu linkage within the catalyst's surface region, which effectively adjusts the electronic configuration of Ni sites and increases lattice oxygen content, thereby enhancing HMF adsorption. Density functional theory (DFT) revealed that the synergistic interplay between Ni and Cu markedly boosts the uptake capacity for both HMF and OH − , improves the rate-determining step (RDS) thermodynamics by reducing its barrier, and consequently accelerates the HMF oxidation reaction (HMFOR). Our findings elucidate fresh perspectives into the structure-performance relationship of nickel-based catalysts and offer a novel approach for designing advanced electrocatalysts for biomass upgrading.
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JOURNAL OF MOLECULAR STRUCTURE
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2026
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IF 4.9
Ping Zhang,Qin-Wen Shi,Wen-Yuan Wu,Jun-Feng Bai
An anionic 3D MOF featuring 9-connected Ni 3 ( μ 3 -OH) secondary building units (SBUs), (Me 2 NH 2 ) 2 [Ni 6 (OH) 2 (Bpdc) 3 (4-Ptz) 6 ]·11H 2 O (NJTU-Bai90; NJTU-Bai denotes Nanjing Tech University Bai’s group), was hydrothermally synthesized using the bifunctional ligands bicyclo[1.1.1]pentane-1,3-dicarboxylic acid (H 2 Bpdc) and 4-(2H-tetrazol-5-yl)pyridine (4-HPtz). This MOF crystallizes in I-43 m space group and possesses intersecting 3D channels packed by trigonal-pyramidal and tetrahedral cages. Tailored for reversible C 2 H 6 adsorption and one-step purification of polymer-grade C 2 H 4 , NJTU-Bai90 not only has a high BET surface area of 1465.7 m 2 g −1 but also exhibits excellent stability in aqueous solutions at room temperature for at least one month. NJTU-Bai90 exhibits superior C 2 H 6 uptake (97.6 cm 3 g −1 at 298 K and 82.5 cm 3 g −1 at 308 K, both measured at 1 bar) in comparison with C 2 H 4 (85.5 cm 3 g −1 at 298 K and 68.4 cm 3 g −1 at 308 K, both measured at 1 bar). Remarkable IAST selectivity values (1.51 and 1.56, respectively) are maintained even at elevated temperatures. Furthermore, dynamic breakthrough experiments demonstrate that a C 2 H 6 /C 2 H 4 mixture (1/15, v/v) can be efficiently separated in one step and that polymer-grade C 2 H 4 yielding with a productivity of 19.1 mL g −1 at 298 K and 1 bar. The distinct retention times of C 2 H 6 and C 2 H 4 on NJTU-Bai90-packed separation columns further highlight the material’s great potential for industrial gas separation applications.
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ELECTROCHIMICA ACTA
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2019
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IF 5.383
Xitao Li,Meilin Jia,Yanting Lu,Nan Li,Yan-Zhen Zheng,Xia Tao,Meilan Huang
BiVO 4 as a promising candidate photoanode material for PEC water splitting has been paid much attention due to its low cost, nontoxicity, high stability and narrow band gap energy of 2.4 eV. However, owing to its short carrier diffusion length and poor charge separation consequence, the achieved efficiency of the BiVO 4 photoanode is still limited. Herein, we addressed this issue by loading Co(OH) 2 onto as-prepared BiVO 4 to fabricate Co(OH) 2 /BiVO 4 heterojunction photoanode via a simple solution impregnation method, in which Co(OH) 2 as a modifier can increase interface charge separation efficiency from 44% of BiVO 4 to 92% of Co(OH) 2 /BiVO 4 . As a result, the water-splitting photocurrent density was significantly enhanced from 1.57 mA/cm 2 of BiVO 4 to 4.52 mA/cm 2 of Co(OH) 2 /BiVO 4 at 1.23 V vs. RHE under 1-sun illumination. Further, the Co(OH) 2 /BiVO 4 photoanode was assembled in tandem with a single sealed carbon-based PSC , and the resulting PV-PEC device showed a high STH efficiency of 4.6% and decent stability. The produced H 2 and O 2 gases were determined as ∼68 μmol/cm 2 /h and ∼34 μmol/cm 2 /h, respectively, corresponding to the 2:1 ratio of water splitting reaction with a faradaic efficiency of ∼98%.
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RSC Advances
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2016
·Vol. 6
·期 110
·108791-108800
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IF 3.289
Wei Zhou,Haiqian Zhao,Jihui Gao,Xiaoxiao Meng,Shaohua Wu,Yukun Qin
The Fenton system (Fe2+/H2O2) generates ·OH with a high oxidation potential. However, as reactants themselves, H2O2 and Fe2+ can act as ·OH initiators as well as ·OH scavengers, leading to the need for a high dosage of reactants and increased costs. As a mixing-sensitive reaction, the ·OH-related reaction kinetics (·OH with Fe2+, H2O2, and RhB) was determined from the reaction rates (which were a constant in this work) and stoichiometry, in which the latter could be regulated by an addition strategy of Fenton reagents. This suggests that ·OH competitive reactions could be controlled by applying a macrolevel addition strategy. Herein, the effects of different addition approaches of Fe2+ and H2O2 on ·OH competitive reactions were quantitatively and systematically studied by analyzing the removal of the model pollutant RhB. We found that without stirring, and compared with a one-time addition, once H2O2 or Fe2+ was added in a step-wise pattern (e.g., one drop by one drop, 2 times, or 4 times), a high concentration of H2O2 or Fe2+ existed in a localized place for a longer period, resulting in a lower proportion of ·OH reacting with RhB, which we ascribed to an enhanced reaction between Fe2+, H2O2, and ·OH. However, when H2O2 and Fe2+ were added from two close points without stirring, a larger proportion of ·OH was scavenged by H2O2 and Fe2+; while under stirring, even a one-time addition of H2O2 or Fe2+ could cause severe scavenging of ·OH. The results also revealed a linear relationship between the RhB removal percentage and wavelength blue-shifts. This study showed that microlevel ·OH competitive reactions could be controlled by applying a macrolevel addition strategy of Fenton reagents without the addition of external chemicals. The results suggest this methodology can also offer an approach to lower ·OH invalid consumption by regulating the addition strategy in bigger reactors.
研究领域:
环境化学
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水处理技术
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高级氧化过程
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反应动力学
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污染控制化学
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Chenxiang Feng,Wei Jian,Agula Bao,Yang Dong
The massive accumulation of fly ash poses serious threats to the environment and land resources, making its effective utilization urgently needed. Although fly ash can be used to prepare silicon-carbon composites, the formation pathways of Si-OH/Si-O-C groups, the construction of Si-C bonds, and the regulation of microstructure remain unclear. In this study, a series of novel silicon-carbon composites (FAKXNY-Z) with unique microstructures were synthesized via high-temperature activation combined with hydrothermal crystallization, using fly ash and chitosan as raw materials. Among them, FAK2N2–150 exhibits a high specific surface area (1511.7 m 2 /g) and abundant active functional groups (Si-OH). This material achieves an adsorption capacity of 550.55 mg g −1 for tetracycline at room temperature. Density functional theory (DFT) calculations based on the experimental structure confirm its distinctive amorphous silica layer derived from sodalite collapse and reveal the adsorption mechanism toward tetracycline (TC), clarifying the strong affinity between Si-OH groups and TC molecules. This work not only provides a feasible strategy for the resource utilization of fly ash, but also offers theoretical support for the design of solid-waste-based functional adsorbents.
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ACS Applied Materials & Interfaces
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2026
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IF 7.8
Mengjiao Zhu,Jing Kong,Qing Li,Xinxin Liu,Jing Zhang,Tao Liu,Liqun Ren,Jing Zheng,Zhenyu Chu,Wanqin Jin
Aspiration pneumonia (AP), caused by the microinhalation of gastric contents, is easy to miss because of its nonspecific symptoms and is associated with a high mortality rate (46.1%) over a short disease course. Current diagnostic methods for aspiration pneumonia, including medical imaging and bronchoscopy, are difficult to use for onsite and rapid diagnosis because they require bulky and time-consuming equipment. In this work, we propose an ultrasensitive electrochemical immunosensor to achieve fast determination of the AP biomarker (pepsin) in the bronchoalveolar lavage fluid (BALF) of AP patients. This immunosensor works through the construction of heterogeneous Ag@Co(OH)2 NWs to simultaneously provide both high electrocatalysis and high conductivity. In terms of architecture, Ag NWs can contribute abundant active sites for antibody immobilization to achieve target capture ability while accelerating electron transfer. In addition, the uniformly distributed Co(OH)2 nanoparticles intensify the response signal because of their high redox capacity. Through the above synergetic effects, our immunosensor enables the recognition and reporting of trace amounts of pepsin in patients’ BALF within only 20 min, which is at least two times faster than that of clinical techniques. Moreover, the high diagnostic accuracy of the immunosensor is comparable to that of CT images from clinical AP patients. This facile immunosensor is promising for providing new insights into the early diagnosis of AP to guide clinical treatment onsite.
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Journal of Water Process Engineering
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2026
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IF 6.6
Yi Ming Jun
β-CD to Fe-Al oxyhydroxide e − transfer induces positive ESP shift, forming e − -deficient cavity. • Activated β-CD cavity enhances TC affinity, supported by experiments and simplified DFT. • Composite achieves 152 mg/g capacity and good reusability and selectivity. • Cooperative enrichment-stabilization: β-CD recognition & Fe coordination. The development of high-performance adsorbents is often constrained by an inherent trade-off between rapid sequestration kinetics and strong binding capacity. To address this bottleneck, we rationally design a β-cyclodextrin-modified mixed-valent iron (Fe 2+ /Fe 3+ ) ‑aluminum hydroxide hybrid composite (CD-FeAl-HC) for efficient tetracycline (TC) removal. A unique cooperative enrichment-stabilization mechanism is realized in this structured composite: interfacial activated β-CD acts as a molecular recognition unit that rapidly pre-concentrates TC from bulk solution, while the adjacent mixed-valent Fe 2+ /Fe 3+ sites provide strong coordination binding for stable immobilization. DFT calculations further reveal that interfacial electron transfer from β-CD to FeAl-HC induces a distinct positive shift in the electrostatic potential of the β-CD cavity, converting it from an inert pocket into an electron-deficient molecular trap. Benefiting from this synergistic effect, CD-FeAl-HC delivers a competitive maximum adsorption capacity (151.99 mg/g), remarkably fast adsorption kinetics, and excellent anti-interference performance against coexisting ions and natural organic matter. Notably, the composite achieves over 90% removal efficiency for both TC and ofloxacin in mixed solution, while maintaining >90% TC removal in real water matrices (reservoir and landscape water). Furthermore, it retains more than 90% of removal efficiency after 10 consecutive adsorption-desorption cycles, demonstrating outstanding reusability. This work establishes a generalizable design strategy that integrates molecular enrichment and surface stabilization within a single hybrid material, providing a promising framework for the rational construction of high-performance adsorbents toward emerging organic pollutant remediation. Download: Download high-res image (160KB) Download: Download full-size image
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Jian Tang,Shuhui Duan,Jingwen Luo,Yangyang Ding,Geng Gao,Bin Yang,Yaochun Yao
While constructing hierarchical structures is an effective strategy to boost hydrogen evolution reaction (HER) activity, most existing synthesis routes still rely on high-temperature treatments. Herein, a novel 1D/2D/0D hierarchical NiMoO 4 /Ni(OH) 2 @P–Ni electrocatalyst is fabricated on nickel foam via a simple and mild two-step method involving hydrothermal synthesis and subsequent electrodeposition. The catalyst requires an overpotential of 77 mV to achieve a current density of 10 mA cm −2 for the alkaline HER and operates stably for 100 h. The high performance originates from a well-orchestrated synergy: P–Ni nanoparticles serve as highly active sites for hydrogen adsorption, while the Ni(OH) 2 component and the multi-component heterointerfaces collectively facilitate water dissociation and charge transfer. Moreover, the hierarchical structure imparts exceptional interfacial properties, including superhydrophilicity and efficient gas bubble release. This work offers a viable strategy for designing high-performance electrocatalysts by orchestrating multi-component synergy within a rationally engineered hierarchical architecture.
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危险品化学品经营许可证（带存储）