ChemCatChem
·
2026
·Vol. 18
·期 13
·e70895
·
IF 4.1
Lian Zou,Shanshan Zhang,Xin An,Zhengcheng Wang,Xin Dai,Shu Yang,Meng Gao,Hai Cui,Chengcheng Tian
Coupling oxygen-defect chemistry with charge-transfer dynamics in perovskite catalysts for formaldehyde (HCHO) photocatalytic abatement under mild conditions remains challenging. Herein, a continuous series of LaMn 1-x Co x O 3 perovskites was synthesized via a facile Pechini method to elucidate the role of B-site Co substitution in visible-light-driven HCHO oxidation. The optimal composition, LaMn 0.67 Co 0.33 O 3 (LMCO-2), achieves ∼95% degradation of 100 ppm HCHO within 15 min (0.198 min −1 ). Comprehensive characterizations attribute this superior performance to a Co-induced defect-charge synergy, encompassing the proliferation of vacancy-associated surface oxygen species, enhanced oxygen mobility, improved low-temperature reducibility, a narrowed band gap, and accelerated charge separation. Mechanistic investigations reveal that photogenerated holes (h + ) and singlet oxygen ( 1 O 2 ) act as dominant oxidative species, while superoxide radicals (∙O 2 − ) serve as crucial intermediate precursors. Furthermore, in situ DRIFTS confirms a stepwise oxidation pathway involving dioxymethylene and formate intermediates prior to ultimate mineralization into CO 2 and H 2 O. Graphical Optimized Co substitution endows LaMn 1-x Co x O 3 with enriched oxygen vacancies, a narrowed band gap, and efficient charge separation, enabling h + / 1 O 2 -driven HCHO oxidation with 95% removal within 15 min.
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高影响因子
IONICS
·
2026
·
IF 3.4
M Jayashree,C. V Manjunatha,Venkataramanappa Y.
A novel Co-Ni-ZnO decorated nitrogen-doped graphene oxide (Co-Ni-ZnO/NGO) nanocomposite was synthesized via hydrothermal and co-precipitation methods followed by calcination for sensitive electrochemical nitrite detection. The synthesized nanocomposite was characterized by UV-visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDX). FTIR confirmed the formation of metal-oxygen bonds, while XRD revealed a crystalline structure with an average crystallite size of 25 nm. SEM analysis demonstrated the uniform distribution of Co-Ni-ZnO nanoparticles on NGO sheets with an average particle size of approximately 29 nm, and EDX confirmed the presence of C, O, Co, Ni, and Zn elements. The electrochemical performance of the Co-Ni-ZnO/NGO modified glassy carbon electrode (GCE) was investigated using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and differential pulse voltammetry (DPV). The modified electrode exhibited enhanced electrocatalytic activity toward nitrite oxidation due to the synergistic interaction between the trimetal oxide nanoparticles and the conductive NGO matrix. Under optimized conditions, the sensor displayed a linear response range of 1.5–78 µM, a sensitivity of 1.945 µA µM⁻¹ cm⁻², and a low detection limit of 3.87 nM (R² = 0.9918). In addition, the sensor demonstrated excellent selectivity, reproducibility, and stability. Recovery studies in food and environmental samples confirmed its practical applicability. These results suggest that the Co-Ni-ZnO/NGO nanocomposite is a promising electrocatalytic material for reliable nitrite detection in environmental monitoring and food safety applications. Graphical abstract Scheme 1. Schematic illustration of the synthesis of the Co-Ni-ZnO/Nitrogen-Doped Graphene Oxide (Co-Ni-ZnO/NGO) nanocomposite and its proposed electrocatalytic mechanism for electrochemical nitrite detection
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ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Yuying Wang,Kun Zhao,Xing Zhu,Langlang Qin,Hengyu Wei,Jiayi Wu,Yuxuan Xu,Binhong Zhao,Shuang Wang,Yunfei Gao,Fuchen Wang,Minghui Zhu
Developing earth-abundant catalysts for low-temperature carbon monoxide (CO) oxidation is important for next-generation emission control, particularly in industrial scenarios where precious-metal catalysts face cost and stability constraints. Here, we report an “inverse” catalyst architecture in which LaMn0.6Cu0.4O3 (LMCO) perovskite is integrated with CuOx-derived phases to form 80Cu-LMCO. The catalyst reaches a T90 of 60 °C for CO oxidation, outperforming conventional perovskite and copper oxide catalysts under comparable conditions. Unlike previously reported CuOx or perovskite catalysts, this system uses an inverse CuOx/perovskite architecture to spatially separate O2 activation from CO adsorption while coupling these processes through interfacial active-oxygen transport. In situ spectroscopy, 18O2 isotopic-exchange experiments, and density functional theory (DFT) calculations further support this pathway by showing that LMCO activates oxygen and provides labile oxygen species, whereas reduced Cu-containing phases provide CO adsorption sites and mediate oxygen transfer toward interfacial Cu+ species. This active-oxygen transport pathway provides a mechanistic basis for designing robust, low-cost catalysts for low-temperature oxidation reactions.
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Solar RRL
·
2026
·Vol. 10
·期 11
·e70386
·
IF 4.8
Shiliang Xiao,Chunxu Xiang,Yize Li,Yuanyuan Zheng,Xinyu Li,Na Zhao,Haoyu Guo,Youyou Yuan,Shaoying Wang,Weibo Yan,Hao Xin
Kesterite Cu 2 ZnSn (S,Se) 4 (CZTSSe) solar cells, as an emerging class of inorganic photovoltaics, offer promising application prospects owing to their earth-abundant and environmentally benign constituent elements, as well as a high theoretical power conversion efficiency. However, the relatively low majority carrier concentration, detrimental band tailing induced by bulk Cu–Zn disorder defects, and severe interface recombination limit further improvement in device efficiency. In a dimethyl sulfoxide (DMSO) solution system, extrinsic cation doping with Li + and Cd 2+ was introduced to optimize both bulk and interfacial properties of the CZTSSe absorber. The results show that the co-incorporation of Li and Cd into the absorber significantly improves its crystallinity, reduces defect density, and suppresses band tailing states, while simultaneously enhancing the hole carrier concentration of CZTSSe. Furthermore, Li + Cd co-doping results in more favorable conduction band offset (CBO) at CZTSSe/CdS heterojunction interface compared to the control group, which effectively reduces carrier recombination and enhances carrier collection efficiency, achieving a power conversion efficiency of 14.2% for the champion device.
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2026
·Vol. 37
·期 22
·1786
·
IF 3.2
Li Qing,Guo Kaixin,Liu Bowang,Zhang Xin,Cui Ruirui,Wang Xu,Deng Chaoyong
Lead-free halide double perovskites are attractive luminescent materials owing to their low toxicity and structural stability, but their white-light performance is often limited by weak long-wavelength emission and inefficient energy regulation. Herein, Sb 3+ single-doped and Sb 3+ , Mn 2+ co-doped Cs 2 NaLuCl 6 phosphors were synthesized by a hydrothermal method. Sb 3+ introduces broadband blue emission associated with localized excited states, while Mn 2+ incorporation produces orange-red emission through the 4 T 1 → 6 A 1 transition. The coexistence of these two emission components enables tunable dual-emission and single-host white-light generation. Time-resolved PL analysis confirms the shortening of the Sb 3+ -related lifetime after Mn 2+ incorporation, and the energy-transfer efficiency reaches 31.25% for the optimized Cs 2 NaLuCl 6 : 0.005Sb 3+ , 0.05Mn 2+ sample. Temperature-dependent PL and Arrhenius analysis reveal improved thermal-quenching resistance, with the activation energy increasing from 0.13777 to 0.21293 eV. The optimized phosphor-based WLED exhibits neutral-white emission with CIE coordinates of (0.3287, 0.3565), a CCT of 5688 K, and a CRI of 72.4. These results provide insight into emission regulation and energy-transfer dynamics in Sb 3+ , Mn 2+ co-doped Cs 2 NaLuCl 6 phosphors for proof-of-concept white-light and optical anti-counterfeiting applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Qingping Xin,Yufei Wang,Wei Huang,Shuo Li,Xingwei Wang,Jiaxin Wu,Dengdi Wu,Mengke Wang,Huiguo Wang,Ningning Gao,Xiaoli Ding,Yuzhong Zhang
Two-dimensional (2D) lamellar membranes with sub-nanometer channels hold promise for precise gas separation, but tuning interlayer spacing at the sub-angstrom scale while synergizing solution-diffusion and molecular sieving remains challenging. Here we report the confinement of an ionic liquid (IL), 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF 4 ]), within the galleries of few-layer Al@Ti 3 C 2 T x nanosheets to create ionic liquid-confined lamellar MXene membranes (Al@Ti 3 C 2 T x -ILLMMs). The residual Al 3+ species in the nanosheets stabilize the interlayer architecture through electrostatic interactions, while the abundant surface terminations (-F, -OH) render the nanosheets negatively charged, promoting uniform IL distribution. By precisely controlling the IL loading via an equilibration–spin-coating approach, the interlayer spacing is continuously tunable from 0.309 to 0.375 nm. The optimal channel height of 0.342 nm lies within the gap between the kinetic diameters of CO 2 (0.33 nm) and N 2 (0.36 nm), closer to that of CO 2 . This precision engineering shifts the gas transport mechanism from Knudsen diffusion to a coupled solution-diffusion and size-sieving regime. The resulting membrane achieves a CO 2 permeance of 150 GPU and a CO 2 /N 2 selectivity of 128.5, representing 4.5-fold and 109-fold improvements over the pristine MXene membrane and offering a favorable balance compared to reported IL-supported membranes. The demonstrated quantitative loading-spacing correlation provides a designable platform for sub-angstrom channel engineering in 2D material membranes.
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Plants-Basel
·
2026
·Vol. 15
·期 16
·2443
·
IF 4.7
Yuhang Jiang,Zehong Qiu,Biaoshen Lin,Zhongping Yang,Yanping Hong
This study investigated the formation of a co-amorphous complex between ursolic acid and quercetin as a chemically defined model system for improving the formulation performance of a poorly soluble triterpenoid acid. Co-amorphous systems were prepared by solvent evaporation and physical grinding at different mass ratios. The optimal formulations were identified and evaluated by water-solubility measurement, powder X-ray diffraction (PXRD), Fourier-transform infrared spectroscopy (FTIR), and in vivo expectorant–antitussive assays. The solvent-derived system showed higher water solubility than the ground system. PXRD and FTIR results suggested that the solvent method more effectively promoted loss of crystallinity and probable intermolecular interactions, whereas the grinding method largely retained the crystalline features of ursolic acid. Both ursolic acid–quercetin formulations exhibited enhanced expectorant and antitussive activities compared with pure ursolic acid. Although quercetin may contribute intrinsic pharmacological activity, the overall improvements were broadly consistent with the altered physicochemical properties of the co-amorphous systems, which may facilitate ursolic acid delivery. As a secondary exploratory comparison, plant-derived triterpenoid-acid-rich and flavonoid-rich fractions fromEriobotrya japonicaleaves were also co-processed; however, because these fractions were not compositionally characterized, their results were interpreted cautiously and were not used as the primary basis for mechanistic conclusions. Overall, the present study demonstrates that co-amorphous complexation of ursolic acid and quercetin is a promising strategy for improving the solubility-related properties and in vivo activity of a poorly soluble triterpenoid acid.
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ACS Applied Nano Materials
·
2026
·Vol. 9
·期 29
·13869-13878
·
IF 5.8
Zhang Chenyuan,Li Jun,Liang Zhenjie,Wang Yingke,Lin Xuecheng,Jin Hongdu,He Dan,Wang Zhifeng,Chen Minrui,Wen Hui-Min,Hu Jun
The development of lightweight, broadband, and high-efficiency electromagnetic wave
(EMW) absorbing materials requires both strong attenuation and effective
impedance matching. To address this challenge, ZIF-67 was introduced
into a resorcinol-formaldehyde (RF) sol–gel system and carbonized
at 600–800 ° C to construct nanoscale Co/C nanoparticle-embedded
carbon aerogels (Co/C-CA). The resulting Co/C-CA composites contain
ZIF-67-derived nanoscale Co/C nanoparticles anchored within a hierarchical
porous carbon aerogel network, which helps preserve the three-dimensional
skeleton and creates magnetic-dielectric interfaces. The optimized
Co/C-CA-700 composite exhibited a minimum reflection loss (RL min ) of −60.9 dB and a maximum effective absorption
bandwidth (EAB) of 6.34 GHz. The improved absorption is attributed
to balanced impedance matching, interfacial polarization, dipole relaxation,
magnetic resonance, and conductive loss regulated by carbonization
temperature, together with cross-scale coupling between nanoscale
Co/C units and the carbon aerogel framework. This work provides a
structure-oriented strategy for lightweight and broadband EMW absorption.
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CRYOGENICS
·
2026
·
IF 2.5
Changkun Wang,Zuhua Chen,Jun Shen,Yong-Chang Lau,Heng Tu,Changmin Xiong
Single crystals of Ce 2 X 3 (NO 3 ) 12 ·24H 2 O (X=Cu, Co, CXN) were successfully synthesized, all crystallizing in the trigonal space group R ¯ 3 . Under a magnetic field variation of 0-9 T at 2 K, Ce 2 Cu 3 (NO 3 ) 12 ·24H 2 O and Ce 2 Co 3 (NO 3 ) 12 ·24H 2 O exhibit large magnetic entropy changes of 15.18 J·kg -1 ·K -1 and 16.19 J·kg -1 ·K -1 , respectively. Notably, the magnetic entropy changes of these novel crystals significantly exceed that of Ce 2 Mg 3 (NO 3 ) 12 ·24H 2 O (CMN), which is only 6.33 J·kg -1 ·K -1 under identical conditions. Meanwhile, the refrigerant capacity (RC), constrained-range equivalent refrigerant capacity product (RCP) and temperature-averaged entropy change (TEC) of CXN are also comprehensively superior to those of CMN. These performances suggest that CXN are promising candidates for ultra-low temperature magnetic refrigeration applications.
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Nano Energy
·
2026
·
IF 16.7
Maoxiang Li,Yachao Xu,Shijie Liu,Zihan Ma,Zhaojun Sun,Jianwei Zhang,Ying Wang,Mingyi Zhang
A strained Pd-O-Ti interface with abundant oxygen vacancies forms an electronic potential-well CO-hydrogenation box. • Spatial coupling of CO confinement and hydrogen activation enables exclusive CO 2 -to-CH 4 photoreduction. • This interfacial design provides a general strategy for deep CO 2 hydrogenation products. Solar-driven conversion of CO 2 to methane offers a route to carbon-neutral fuels, but directing the multielectron pathway beyond the CO intermediate remains a central challenge. Here, by growing Pd nanoparticles in situ on oxygen-deficient TiO 2 (Pd/TiO 2-x ), we construct an oxygen-vacancy-rich Pd-O-Ti interface that functions as a CO-hydrogenation box. Interfacial oxygen vacancies enrich and retain CO 2 -derived carbon intermediates, whereas adjacent Pd sites promote H 2 O activation and provide reactive surface hydrogen species in the same nanoscale region. This spatial coupling of CO confinement and hydrogen delivery favors sequential C-H bond formation and suppresses premature CO desorption, thereby redirecting CO 2 photoreduction toward CH 4 . As a result, Pd/TiO 2-x achieves 100% CH 4 selectivity with a CH 4 production rate 40 times higher than that of TiO 2 under AM 1.5 G irradiation. Under natural sunlight, the catalyst delivers a CH 4 production rate of 1.1 mmol h −1 g −1 and sustained activity over repeated daytime cycles. These results identify an interfacial design principle for steering multielectron CO 2 photoreduction toward deeply reduced hydrocarbon products. Download: Download high-res image (199KB) Download: Download full-size image
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DIAMOND AND RELATED MATERIALS
·
2026
·
IF 5.2
Zhen Meng,Huoxing Huang,Shurui Xu,Hang Chen,Xiaobo Fu,Junling Tu,Baizeng Fang,Wenbo Liao,Guoyu Zhong
Precise monitoring is of great significance for diabetes management. In contrast to enzyme-based glucose sensors, nonenzymatic ones offer advantages such as improved stability, higher sensitivity, and reduced manufacturing expenses. In the present research, nitrogen-doped carbon nanotube-encapsulated cobalt particles (Co@NCTs-800) were synthesized via a high-temperature pyrolysis and applied to high-efficiency glucose detection. This material benefits from a large number of Co 4+ active sites formed by electrooxidation, along with the high surface area and conductivity of the N-doped carbon nanotube matrix. As a result, Co@NCTs-800 showed outstanding electrocatalytic properties, achieving remarkable sensitivity reaching up to 141.3 μA mM −1 cm −2 , a rapid response duration of merely 1.9 s, along with a minuscule detection threshold of 2.3 μM. The sensor also demonstrated strong resistance to various interfering substances, good stability and reproducibility (RSD = 3.24%). Furthermore, reliable glucose detection in real beverage samples confirmed the practical applicability of the proposed sensor. The successful fabrication of cobalt particles encapsulated in nitrogen-doped carbon nanotubes offered in-depth understanding regarding the advancement of highly efficient non-enzymatic electrochemical glucose sensing.
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Small
·
2026
·
IF 12.1
Yu Liu,Yi Xin,Teng Zhang,Yunlong Li,Junhong Jian,Shoufu Cao,Jian Luan,Xiaosa Zhang,Wenze Li,Wei Qi
Tailoring bimetallic synergy in azo-functionalized porous organic polymers for enhanced electrocatalytic CO 2 reduction porous organic polymers (POPs) have emerged as promising candidates for electrocatalytic applications due to their structural tunability and high surface areas. In this study, we report a coordination-driven assembly strategy to construct a Cu/Co bimetallic azo-phenolic polymer (denoted as Cu@Azo-CoPG) through chelation of azo-phenolic motifs with Cu 2 + ions. Systematic evaluation reveals that the bimetallic Cu@Azo-CoPG outperforms its monometallic counterparts (Cu-PG and Co-PG) in CO 2 reduction reaction (CO 2 RR), achieving a remarkable CO Faraday efficiency (FE CO ) of 94.3%. First-principles calculations elucidate that the Cu─Co dual sites synergistically modulate reaction energetics: the Co center lowers the energy barrier for * COOH intermediate formation, while adjacent Cu sites facilitate CO desorption. This work establishes a design paradigm where the electronic interplay between heterometallic sites in POPs enhances both CO 2 adsorption/activation and product desorption kinetics, offering new insights into the rational engineering of dual-active-site catalysts for sustainable energy conversion.
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PubMed
高影响因子
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