CHINESE JOURNAL OF CATALYSIS
·
2026
·
IF 17.2
Sen Feng,Cunyao Li,Benhan Fan,Guangjun Ji,Hong Wei,Xinyuan Liu,Yang Zhao,Miao Jiang,Li Yan,Qiang Zhou,Yunjie Ding
To replace scarce Rh resources and enhance the recyclability of the metal, we report a novel heterogeneous cobalt mononuclear complex catalyst, which possesses phosphorus-rich polymer backbone and P/S dual-atom coordination sites. This catalyst exhibited a much higher hydroformylation performance of 2,5-DHF compared to the Co-P homogeneous analogue, increasing conversion by 70% and shifting selectivity toward high-value-added 3-Formyl-THF by 15%. Under the optimal reaction conditions, the heterogeneous mononuclear complex Co 1 /POPs-PPh 3 -5P&2S catalyst displayed comparable performance of precious Rh-based catalysts, achieving a 96.8% conversion of 2,5-DHF and an 85.6% selectivity of 3-Formyl-THF for at least 5 runs. Comprehensive characterizations (extended X-ray absorption fine structure, X-ray photoelectron spectroscopy, in-situ Fourier transformed infrared, etc .) demonstrated that P/S dual-site coordination regulated the electronic structure of Co active centers. Notably, the incorporation of sulfur increased the difference in adsorption energy barriers between the substrate and its isomerized substrate, thereby promoting the massive generation of 3-Formyl-THF. Besides, time-of-flight secondary ion mass spectrometry and density functional theory calculations successfully evidenced the complete structure of the active center and established a coherent reaction mechanism. This study successfully developed a heterogeneous catalyst system based on a mononuclear cobalt complex, achieving a new strategy for non-noble metal catalysis and providing new insights into energy conservation and efficient resource utilization.
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高影响因子
Soft Science
·
2026
·Vol. 6
·期 3
·N
·
IF 15.9
Yexi Jin,Ruolin Wang,Jianyu Lin,Yu Lu,Jing Zhang,Xingwen Zhou,Baijie Cheng,Liguo Chen
Gait information is rooted in muscle contraction dynamics and neuromuscular regulation, and represents a reliable biometric. However, mechanical and bioelectrical signals acquired using conventional wearables are prone to replication and forgery during storage and transmission. Moreover, the degradation of recognition performance under standard encryption can occur due to limited feature dimensionality and fidelity. In this study, we present a spatiotemporally synchronous strain-surface electromyography (sEMG) co-sensing system (S-SESS), which co-locates and phase-aligns kinematic and neuromuscular signals from the gastrocnemius to deliver secure gait recognition. The strain sensing unit achieves a low hysteresis (1.6% at 100% strain) and high cyclic fidelity (> 10,000 cycles) using hierarchical supramolecular aggregates with multiple hydrogen bonds and dynamic π-π stacking that ensure precise phase tracking. The adaptive sEMG unit exhibits high interfacial conformity, suppresses motion artifacts, and achieves a signal-to-noise ratio (SNR) greater than 40 dB. The bimodal features are locally encrypted using the Advanced Encryption Standard-128 (AES-128) algorithm and processed directly in the ciphertext domain via a dedicated ByteEmbedded Temporal Convolutional Network (ByteEmbedded-TCN). This directly maps ciphertext streams into byte-embedded sequences and leverages causal and dilated convolutions to construct multi-scale receptive fields for temporal alignment and classification. The end-to-end framework achieves 89.7% ± 1.2% gait identification accuracy under encryption. The findings of this study provide a privacy-preserving wearable paradigm for trustworthy identity authentication.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Liang Zhou,Mingkang Zhang,Jingyi He,Hongbo Wang,Minjia Luo
• Co/TiO 2 @C composites are derived from bimetallic MOF. • • Minimum reflection loss of −64.5 dB at 1.8 mm thickness is achieved. • • Effective absorption bandwidth of 3.2 GHz in X-band. • • Hierarchical structure boosts interfacial and dipole polarization. In this study, disk-shaped MIL-125(Ti,Co)- x precursors were synthesized via a solvothermal method with varying CoCl 2 ·6H 2 O content, and subsequently Co/TiO 2 @C composites were fabricated through a two-step pyrolysis process. The precursor morphology transforms from intact micron-scale disks into thinner flakes, and ultimately into fragmented structures with increasing the cobalt content. The pyrolysis temperature concurrently governed the composition of TiO 2 phase, the degree of carbon graphitization, and the distribution of nanoparticles. The optimized Co/TiO 2 @C(700)-2 composite achieves a minimum reflection loss of −64.5 dB at a matching thickness of 1.8 mm, and exhibits an effective absorption bandwidth of 3.2 GHz at 2.1 mm. The outstanding electromagnetic wave absorption properties stem from a favorable synergy between adequate attenuation and satisfactory impedance matching, supported by the conductive carbon network, abundant defect sites, multiple TiO 2 /carbon heterointerfaces, and hierarchical porous architecture. These results establish the cooperative regulation of electromagnetic wave absorption properties by cobalt content and pyrolysis temperature, offering a strategy for the design of MOF-derived lightweight absorbers with tunable electromagnetic wave absorption. Download: Download high-res image (139KB) Download: Download full-size image
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Advanced Composites and Hybrid Materials
·
2026
·Vol. 9
·期 4
·340
·
IF 15.5
Wang Yanrong,Chen Qiuling
The strategic integration of metal-organic frameworks (MOFs) with MXenes presents a promising avenue to overcome charge separation bottlenecks in photocatalysis. This study constructs a hierarchical S-scheme heterojunction by in-situ growing ultrafine Zinc–Tetrakis(4-carboxyphenyl) porphyrin (Cobalt-incorporated) Zn-TCPP(Co) MOF nanoparticles (15 nm) on two-dimensional functionalized MXene nanosheets. This unique “particle-on-lamella” architecture is engineered with molecular bridges, establishing a chemically bonded interface via C–Ti–O and N–Ti bonds that facilitate rapid charge transfer. The optimized heterostructure exhibits a narrow bandgap of 1.95 eV, a significantly prolonged charge carrier lifetime of 35.5 ns, and a high photocurrent density of 1.7 µA cm − 2 . By leveraging synergistic S-scheme charge separation, MXene’s metallic conductivity, and molecular single-atom Co sites, the composite achieves an exceptional hydrogen evolution rate of 24.3 mmol g − 1 h − 1 with an apparent quantum efficiency of 10.2% at 420 nm—representing a sixfold enhancement over pristine Zn-TCPP(Co). This performance surpasses many recently reported MOF- and MXene-based photocatalysts. Combined density functional theory calculations and experimental analyses confirm the critical role of the internal electric field in driving the S-scheme mechanism, which effectively preserves strong redox potentials. This work provides a definitive blueprint for high-performance photocatalytic systems through molecular-level interfacial engineering.
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Toxics
·
2026
·Vol. 14
·期 7
·627
·
IF 4.9
Zhitao Tang,Rongkui Su,Chuansheng Chen,Yiting Luo,Mingli Chen,Shunhong Huang,Xiancheng Ma
Antibiotic residues pose a serious threat to environmental safety. In this study, nitrogen/boron co-doped biochar (NBLB) was successfully prepared using lignosulfonate, an industrial byproduct, as the precursor via a one-step impregnation–pyrolysis method. NBLB was applied to activate peroxymonosulfate (PMS) to degrade tetracycline (TC) in water. The results showed that NBLB-activated PMS degraded 93.4% of TC within 60 min, which was 42.6%, 20.4%, and 27.8% higher than those of undoped biochar, nitrogen-doped biochar, and boron-doped biochar, respectively. Additionally, the NBLB/PMS system exhibited high tolerance to common aqueous anions such as Cl − , C O 3 2 − , PO 4 3 − , NO 3 − and S O 4 2 − . BET tests indicated that the specific surface areas of undoped, N-doped, B-doped, and NBLB were 133.98, 280.22, 304.13, and 342.35 m 2 g −1 , respectively, exhibiting a significant enhancement in the specific surface area of NBLB. The co-doping of N and B constructed a hierarchical pore structure, providing an efficient dispersion platform for active sites such as C=O, BC 2 O, and pyridinic-N. Quenching experiments and EPR detection demonstrated that the degradation of tetracycline (TC) in the NBLB/PMS system followed a synergistic oxidation mechanism dominated by 1 O 2 and O 2 • − , supplemented by • OH and S O 4 • − . This study prepared high-performance nonmetallic catalysts through a solid waste resource utilization strategy, providing a green and feasible path for the treatment of antibiotic pollution.
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高影响因子
Water
·
2026
·Vol. 18
·期 16
·1928
·
IF 3.5
Yixin Pan,Yajun Chen,Wenshuo Zhang,Xiaofan Lv
A nitrogen-doped carbon-confined cobalt–iron bimetallic catalyst (CFNC) was fabricated through high-temperature pyrolysis of a ZIF-67-modified CoFe2O4precursor and employed as a heterogeneous activator for peroxymonosulfate (PMS)-mediated Rhodamine B (RhB) degradation. The physicochemical properties of the as-prepared catalyst were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) analysis. These analyses demonstrated that Co–Fe bimetallic species were successfully embedded within the nitrogen-doped carbon framework, forming a confined carbon-supported catalytic structure. Under optimized conditions (CFNC dosage of 20 mg L−1, PMS concentration of 150 mg L−1, and initial pH of 7), the CFNC/PMS system achieved 99.45% RhB removal within 10 min. Moreover, the catalyst retained 78.91% degradation efficiency after five successive cycles, indicating its satisfactory reusability and structural stability. Mechanistic investigations based on radical scavenging experiments and electron paramagnetic resonance (EPR) analysis revealed that PMS activation over CFNC involved the coexistence of radical and non-radical oxidation pathways, in which singlet oxygen (1O2) played a predominant role. The defect-rich nitrogen-doped carbon matrix facilitated PMS adsorption and activation, promoting the selective formation of1O2, while the confined Co–Fe bimetallic sites contributed to efficient electron transfer during the catalytic process. The synergistic coupling between the Co–Fe active centers and conductive carbon framework accounted for the enhanced catalytic performance, suppressed metal leaching, and long-term stability of CFNC. This work presents a promising approach for constructing robust bimetallic carbon-based catalysts and advances the application of PMS-driven advanced oxidation processes for wastewater remediation.
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Fan Chen,Lijuan Chen,Zifu Yan,Yizhe Liu,Li Niu
Antibiotic residues, especially ciprofloxacin (CIP), pose ecological and health risks due to their persistence and poor removal by conventional wastewater treatment. Herein, a magnetically recyclable Ti 3 C 2 –Co nanoreactor was synthesized via a molten-salt in situ etching strategy for efficient peroxymonosulfate (PMS) activation and CIP degradation. The confined Ti 3 C 2 –Co architecture promotes local enrichment of PMS and CIP near Co active sites, thereby enhancing interfacial oxidation and reactive oxygen species (ROS) utilization. Density functional theory (DFT) calculations revealed that Ti 3 C 2 –Co strengthened PMS adsorption with an adsorption energy of −1.17 eV and elongated the O–O bond to 1.633 Å, confirming facilitated PMS activation and charge transfer. The Ti 3 C 2 –Co/PMS system achieved 99% CIP degradation within 30 min, maintained high activity over a broad initial pH range of 3–11, and removed more than 85% of CIP in real water matrices. Radical and non-radical pathways involving SO 4 − ·, ·OH, O 2 – ·, and 1 O 2 jointly contributed to CIP degradation, while Co 2+ /Co 3+ cycling and Ti 3 C 2 –Co interfacial electron transfer synergistically promoted PMS activation. The catalyst retained 90.85% activity after four cycles, demonstrating its potential for practical wastewater treatment.
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OPTICAL MATERIALS
·
2026
·
IF 4.3
Qingyuan Niu,Penghui Ma,Feng Luo,Xingyu Liu,Shuxin Yin,Xin Huang,Yumin Song
Red fluorescent powder has important applications in various fields such as display and lighting. In this paper, Eu 3+ /Nb 5+ co-doped SrTiO 3 fluorescent material was synthesized by hydrothermal method, and its phase structure, microstructure, luminescence properties, thermal stability and luminescence dynamic characteristics were systematically characterized. The results showed that under 395 nm near-ultraviolet excitation, the material emitted high-purity Eu 3+ characteristic red light at 612 nm; when the Eu 3+ doping content was 7 mol% and Nb 5+ was 3.5 mol%, the luminescence intensity was increased by 259% compared with single-doped Eu 3+ ,and the absolute quantum efficiency increased. Nb 5+ plays a dual role in this process, namely charge compensation and energy transfer modulation: On one hand, it inhibits the formation of lattice defects through charge balance between sites; on the other hand, it constructs an efficient light absorption center, enabling ultrafast energy transfer from the matrix to Eu 3+ . This material has stable color properties within the temperature range of 303-463 K, with no obvious color shift, and the thermal quenching activation energy is 0.34 eV, showing excellent thermal stability. This efficient and stable red fluorescent powder prepared by the Eu 3+ /Nb 5+ co-doping strategy has broad application prospects in near-ultraviolet excitation high color rendering index white LED and anti-counterfeiting encryption fields.
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CONSTRUCTION AND BUILDING MATERIALS
·
2026
·
IF 8.9
Shibo Zhang,Jun Xie,Shaopeng Wu,Sihui Peng,Derun Zhang,Fusong Wang
The rapid elimination of free calcium oxide (f-CaO) is critical for the large-scale utilization of steel slag (SS). To address this, an acrylic acid-vinyl phosphonic acid copolymer (AA-co-VPA) with high Ca²⁺ chelating capacity was utilized in this study. The chelation mechanism of AA-co-VPA with f-CaO and the modification mechanism regarding the microscopic properties and volume stability of SS were systematically investigated via SEM-EDS, XPS, FTIR, and CT scanning. On this basis, a systematic performance validation was conducted, spanning from aggregates and asphalt mastic to the asphalt mixture. The results indicated that AA-co-VPA exhibited exceptional Ca²⁺ chelation performance attributed to its unique bifunctional molecular structure, achieving a chelation capacity of 375 mg/g. At the optimal modification concentration of 1.0%, the immersion expansion rate of the AA-co-VPA modified steel slag (AAVPA-SS-1.0) significantly decreased from 3.76% for unmodified SS to 0.37%, and its f-CaO content was lowered to 0.44%. Microstructural analysis revealed that the proportion of micropores smaller than 100 μm in AAVPA-SS-1.0 was reduced by approximately 90%, leading to synchronous improvements in water absorption and mechanical properties. Rheological tests demonstrated that substituting mineral fillers with the filler (AAVPA‑SSP) prepared from AAVPA‑SS‑1.0 significantly enhanced the elastic recovery and high-temperature resistance to permanent deformation of the asphalt mastic. Finally, the resulting modified steel slag asphalt mixture (AAVPA-SSAM) exhibited excellent pavement performance, with an immersion expansion ratio of only 0.51%, far lower than the 2.82% of the asphalt mixture with unmodified steel slag (SSAM). While effectively addressing the volume stability issue, its water stability and high-temperature rutting resistance were superior to those of both the basalt asphalt mixture (BAM) and SSAM, and its low-temperature cracking resistance met specification requirements.
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INORGANIC CHEMISTRY
·
2026
·Vol. 65
·期 35
·20464-20471
·
IF 4.6
Sun Ling,Gao Zhanyong,Li Huimin,Xu Xinyi,Zhao Di,Li Huanrong
Silver nanoclusters (AgNCs) with
exceptional luminescence
suffer
from an aggregation-induced loss of their unique quantum confinement
effects. LTA zeolites are ideal hosts for stabilizing AgNCs, yet most
reported water-responsive AgNC@LTA systems only exhibit binary luminescence
switching, restricting high-resolution multilevel environmental monitoring.
Herein, we construct a Mg 2+ -regulated AgNC@LTA system via
sequential ion exchange and thermal treatment. The as-prepared Ag-LTA(Na/Mg)
achieves continuous three-state luminescence switching with yellow
emission in dehydration, red in slight hydration, and green in full
hydration. Mechanistic studies reveal that Mg 2+ isolates
AgNCs, blocks framework-to-cluster charge transfer, and stabilizes
the intermediate excited state. The luminescence was confirmed as
phosphorescence. This material realizes a naked-eye-resolvable color
transition over 0%–60% relative humidity with excellent reversibility,
breaking the binary limitation and offering an avenue for high-precision
visual humidity sensors.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124738
·
IF 7.5
Xinyi Tao,Weiwei Chen,Xuehong Fan,Rui Hu,Xuejian Wang,Shiquan Sun,Yu-Hong Cui,Zheng-Qian Liu
Waste-derived biochar catalysts are widely used in catalytic ozonation. However, biochar is often constrained by insufficient surface active sites and low interfacial electron transfer efficiency. In this work, nitrogen (N) and sulfur (S) co-doped sediment-derived biochar (C-N 1 S 2 -600) was prepared by one-step pyrolysis using a mixed compost of black-odorous sediment, reed straw, and food waste as precursors, with melamine and thiourea using as the N and S sources, respectively. The optimized C-N 1 S 2 -600 has a well-developed mesoporous structure, abundant structural defects, and numerous reactive sites originating from N/S–C coordination. Ozonation with C-N 1 S 2 -600 achieved 62.8% Deethylatrazine degradation, which was significantly higher than that of ozonation alone (13.9%) and ozonation with pristine biochar (33.1%). C-N 1 S 2 -600 also exhibited excellent reusability over five consecutive cycles and maintained high performance in secondary effluent. Reactive species identification confirmed that C-N 1 S 2 -600 facilitated the conversion of O 3 into • OH. Theoretical calculations further revealed that N, S co-doping induced a more non-uniform surface charge distribution and narrowed the orbital energy gap, providing electronic-level insights into enhanced O 3 adsorption, interfacial electron transfer, and reactive oxygen species generation. C-N 1 S 2 -600 exhibited good operational stability and tolerance to matrix interference under the tested conditions. This study provides a feasible strategy for converting solid-waste-derived biochar into efficient carbonaceous catalysts for advanced wastewater treatment, and offers a promising strategy for micropollutant abatement and wastewater purification by catalytic ozonation with high-performance biochar catalyst.
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ENVIRONMENTAL RESEARCH
·
2026
·
IF 8.2
Yueru Fang,Zhiqiang Guo,Tanveer Hussain,Xiaoyong Lv,Ronghua Li
Organoarsenical contaminants such as roxarsone (ROX) pose a persistent challenge in water treatment because oxidative degradation of the parent compound inevitably generates inorganic arsenic (iAs), whereas adsorption-based processes immobilize iAs without removing the organoarsenical precursor. As a result, arsenic is redistributed among species rather than eliminated, and its overall fate during transformation and immobilization remains poorly quantified. Here, we develop a Co-doped LaOCl catalyst (Co 0.5 LOC) that enables coupled oxidative transformation and arsenic immobilization under peroxymonosulfate (PMS) activation via spatially integrated Co and La sites. Critically, a complete time-resolved arsenic mass balance is achieved throughout the reaction, with total arsenic recovery maintained at 100 ± 2%, thereby directly linking ROX degradation, iAs formation, and final immobilization. The catalyst exhibits a pseudo-first-order ROX degradation rate of 0.2935 min −1 , 2.2-fold higher than pristine LaOCl, with >96% removal across pH 5–9 and >81% activity retention after five cycles. Mechanistic analysis identifies surface-confined singlet oxygen ( 1 O 2 ) as the dominant reactive species, providing strong resistance to chloride ions and natural organic matter. A synergy index of 6.72 quantifies non-additive oxidation–adsorption coupling. Total organic carbon monitoring reveals that structural transformation substantially exceeds mineralization, with approximately 26% of the initial carbon remaining at 120 min; LC-HRMS tentatively identifies four aromatic intermediates in the residual fraction, consistent with the limited ring-opening capability of surface-confined 1 O 2 . Overall, this work establishes a unified strategy for organoarsenic remediation by integrating oxidative destruction with quantitative arsenic sequestration, enabling comprehensive contaminant fate accountability in advanced water treatment systems.
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危险品化学品经营许可证（带存储）