JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Zi-Ang Lu,Shan Jin,Tingting Qu,Ranran Liang,Yunchen Du,Mengxin Chen,Ping Xu
Conductive oxides with chemically distinct local environments are attractive for bifunctional water splitting because hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) impose different requirements on adsorption and charge transfer. Here, a descriptor-informed Fe/V co-doping strategy is proposed to regulate MoO 2 for photo-assisted electrocatalysis. Density functional theory (DFT) screening based on incorporation thermodynamics, local M–O bond mismatch, and near-Fermi-level electronic states identifies V as the most favorable dopant for lattice incorporation and Fe as the dopant that minimizes local bond-length mismatch while strongly perturbing the electronic structure. Guided by this complementarity, Mo 0.9 Fe 0.05 V 0.05 O 2 was synthesized and compared with pristine MoO 2 and single-doped controls. The co-doped catalyst preserves the MoO 2 framework and delivers the best overall performance, requiring 166 and 243 mV for HER and 253 and 281 mV for OER to reach 10 and 50 mA cm −2 under illumination. Electrochemical measurements reveal improved charge-transfer behavior and enhanced light-induced current response. Optical characterization and Finite-difference time-domain (FDTD) simulations indicate that the hollow architecture promotes optical-field localization, while DFT reaction energetics suggest site-dependent catalytic preferences, with V-associated environments favoring hydrogen adsorption and Fe-associated environments facilitating OER intermediate conversion. This study demonstrates that pairing dopants according to lattice compatibility and electronic perturbation is an effective route to activate MoO 2 for photo-assisted bifunctional water splitting. A descriptor-guided Fe/V co-doping strategy activates hollow MoO 2 for photo-assisted water splitting. Fe/V co-doping enables complementary HER/OER active sites, while the hollow architecture promotes optical-field localization and enhances interfacial charge-transfer kinetics under illumination. Download: Download high-res image (143KB) Download: Download full-size image
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高影响因子
ACS Biomaterials Science & Engineering
·
2026
·
IF 6
Rou Li,Chaochen Wang,Yong Xie,Weitong Gao,Yanning Guo,Yingjie Yu,Sai Luo,Ye Li,Xinyao Chen,Cong Cao,Wei Ji,Chunyu Li,Baohua Xu,Qing Cai,Jing Li
Bone defect repair remains a major clinical challenge, and effective alternatives to autologous bone grafting are urgently needed due to limitations such as donor site scarcity, immune complications, and high long-term resorption rates. In this study, we developed a near-infrared (NIR)-responsive composite scaffold for the controlled and sustained delivery of corynoline (Cor) and extracellular vesicles (EVs) to enhance bone regeneration. The scaffold was constructed from β-tricalcium phosphate (β-TCP) and coated with bioinspired polydopamine (PDA), which enabled efficient immobilization of Cor and EVs via surface adsorption. The PDA layer endowed the scaffold with photothermal properties, allowing NIR irradiation to trigger and accelerate the release of bioactive factors in a sustained manner for at least 14 days. Cor promoted macrophage polarization from the pro-inflammatory M1 phenotype toward the anti-inflammatory M2 phenotype, thereby reducing excessive reactive oxygen species, while EVs derived from osteogenically induced umbilical cord mesenchymal stem cells enhanced angiogenesis and osteogenesis. The photothermal effect of PDA further synergized with these biofactors to modulate the local microenvironment. Under NIR stimulation, the composite scaffold effectively regulated the immune microenvironment and promoted vascularized bone regeneration. In vivo results demonstrated significantly enhanced new bone formation, accompanied by reduced inflammation, increased endogenous cell recruitment, and accelerated vascularization. Overall, this multifunctional, NIR-responsive scaffold provides a promising strategy for efficient and controlled bone defect repair.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Qiaoling Shen,Caiqing Song,Meirou Jing,Linghui Hao,Lijie Sun,Lijun Bian
To address the low conductivity and poor cycling stability of V 6 O 13 for supercapacitors, Ni 2+ , Co 2+ , and Mn 2+ -doped V 6 O 13 (denoted as XVO, where X = Ni, Co, and Mn) nanomaterials were synthesized using a one-step solvothermal method. A systematic comparative investigation revealed a counterintuitive yet insightful finding: Mn doping induces the largest lattice expansion; however, MnVO delivers the poorest electrochemical performance, whereas CoVO with only moderate lattice expansion achieves the best performance. Through comprehensive characterization, we demonstrated that Co 2+ uniquely balances three critical functions: optimizing lattice expansion, maximizing V 4+ /oxygen vacancy concentration, and directing the formation of highly dispersed nanobelts, creating a triple synergy that neither Ni 2+ nor Mn 2+ can replicate. Consequently, the CoVO electrode exhibited exceptional cycling stability with 93.1% capacity retention after 10000 cycles at 100 A∙g −1 , along with a high specific capacitance (753.7 F∙g −1 at 1 A∙g −1 ). Furthermore, an assembled CoVO//CoVO symmetric supercapacitor operated stably at 0–1.6 V, achieving a maximum energy density of 91.1 Wh∙kg −1 at 400 W∙kg −1 and retaining 42.2 Wh∙kg −1 at 8000 W∙kg −1 . This study identifies Co 2+ as the optimal dopant for V 6 O 13 -based electrodes and establishes that optimal performance requires a multi-scale synergistic optimization of the structure, electronics, and morphology, rather than the sole pursuit of maximum interlayer spacing.
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International Journal of Analytical Chemistry
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2026
·Vol. 2026
·期 1
·6094234
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IF 2.8
Amna Naz,Muhammad Farooq,Muhammad Sarfraz,Ahsanullah Unar,Rouheena Shakir,Hafiz Arfat Idrees,Nadia Anwar
Oleanolic acid (OL) and genistein (GN) are bioactive compounds known for their anti-inflammatory, antioxidant, antiviral, cardioprotective, and anticancer properties. Their synergistic therapeutic potential motivated the development of a hybrid nanoformulation, comprising GN nanoparticles incorporated into an OL-loaded liposomal system named GOL. The formulation was extensively characterized for particle size, polydispersity index, zeta potential, entrapment efficiency, and pharmacokinetic behavior, demonstrating its suitability for co-delivery of both drugs. To accurately quantify OL and GN in the GOL system, a robust HPLC-UV method was developed and validated. Simultaneous determination was challenging due to distinct chemical and spectral properties; OL showed λmax at 210–215 nm, while GN had λmax at 215, 270, and 336 nm. Optimization using a Box–Behnken design yielded a method using a C18 column with a methanol–acetonitrile–water–tetrahydrofuran (60:20:8:12, v/v) mobile phase and detection at 230 nm. Retention times were 4.8 and 9.9 min for OL and GN. Plasma samples were processed via simple protein precipitation. The method met ICH validation criteria for sensitivity, selectivity, accuracy, precision, robustness, and stability. Finally, the developed method was successfully applied to analyze both drugs from the GOL nanoformulation in both biological fluids and polymeric matrices, enabling a reliable assessment of drug content and stability.
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JOURNAL OF POLYMER RESEARCH
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2026
·Vol. 33
·期 4
·163
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IF 3.5
Wang Jing,Bai Wei,Wang Gongying,Li Chen,Wang Qingyin
Bisphenol-fluorene-type polycarbonate as a transparent thermoplastic resin, exhibits low birefringence due to the rigid fluorene. In this paper, a series of random co-polycarbonates (BPEF/BPA-PC) were prepared from bisphenol A(BPA), 9,9-bis[4-(2-hydroxyethoxy) phenyl] fluorene (BPEF) and diphenyl carbonate (DPC) using melt transesterification method by adjusting molar ratios of raw materials. The effects of catalyst dosage, polycondensation temperature and polycondensation time on the molecular weight of the products were systematically investigated, and the copolymer structures were characterized by FT-IR, 1 H NMR and 13 C NMR spectra tests; the thermal performance were determined by Differential Scanning Calorimeter (DSC) and thermogravimetric analysis. The molecular weights and their distributions( Đ ) were determined by Gel Permeation Chromatography. The results of GPC showed that the max M w of copolymers reached to 6.8*10 4 g/mol and Đ was 1.81. The maximal thermal decomposition temperature ( T d,5% ) of the co-polycarbonate reached to 359.3 °C. The refractive index of the materials was characterized using an Abbe refractometer and it showed refractive index (n d ) up to 1.640 under visible light. Mechanical property tests showed that the tensile strength of co-polycarbonate were significantly increased when the contents of BPEF was higher, reflecting the enhancement effect of fluorene unit on the rigidity of molecular chain.
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CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Zhenzhong Tao,Huaixiang Li,Dedong He,Zijun Huang,Jun Liang,Jiaming Dong,Xiaohua Cao,Yongming Luo
The reverse water gas shift (RWGS) reaction has garnered significant attention for its ability to selectively convert CO 2 into CO. However, conventional transition metal catalysts often face challenges such as the generation of byproducts at low temperatures and sintering at high temperatures. In this study, a series of Ga/Al 2 O 3 catalysts with varying Ga loadings was prepared using the impregnation method. Notably, these catalysts exhibit nearly 100% CO selectivity across a broad temperature range of 300–700 °C, with stable catalytic activity maintained after 165 h of testing at 600 °C. Characterization reveals Ga species exist as highly dispersed Ga 2 O 3 on the Al 2 O 3 support. The formation of Ga δ+- H species occurs under an H 2 atmosphere, accompanied by the creation of oxygen vacancies. In situ DRIFTS spectroscopy confirms Ga δ+ -H as the key active site for RWGS, and this species undergoes reversible regeneration in a H 2 environment. This work first reveals the pivotal role of Ga δ+ -H in driving the highly selective RWGS reaction. By promoting CO 2 activation and the formation of key formate intermediates, it achieves nearly 100% CO selectivity. This discovery provides novel design insights and theoretical foundations for developing highly efficient CO₂ conversion catalysts.
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CHINESE JOURNAL OF CATALYSIS
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2026
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IF 17.2
Xuanbei Peng,Mengqi An,Ruishao Mao,Yanliang Zhou,Ming Chen,Dongya Huang,Kailin Su,Shiyong Zhang,Jun Ni,Xiuyun Wang,Lilong Jiang
The development of highly efficient and stable non-precious metal catalysts under mild conditions is highly desirable for NH 3 synthesis. However, the competitive adsorption of N 2 and H 2 on the single site and strong NH 3 adsorption greatly hinder the catalytic efficiency of catalysts under mild conditions. Herein, we propose the use of responsive alkali metal perrhenates (AMReO 4 , AM = K, Na, or Cs) supports with scheelite-type structure that contains active Re metal and promoters to disperse cobalt (Co) species, constructing highly efficient catalysts by regulating the competitive reactant adsorption-activation pattern to a non-competitive mechanism. Our studies demonstrate that Co/KReO 4 catalyst shows excellent catalytic performance for NH 3 synthesis. Co and Re sites synergistically to promote the activation of N 2 molecules, while the adsorption and activation of H 2 primarily occur on Re sites of KReO 4 . The presence of Co species facilitates H-spillover that enables the migration of *H species from Re to Co sites, then cascade catalysis of hydrogen and dissociated nitrogen species to form NH 3 . Accordingly, the NH 3 synthesis rate of Co/KReO 4 (11.48 mmol NH3 g cat −1 h −1 ) is 3.2-fold higher than that of KReO 4 (3.58 mmol NH3 g cat −1 h −1 ) at 400 °C and 1 MPa. This work emphasizes the significance of employing reactive supports containing promoters and active metals, in collaboration with non-precious Co sites, to enhance NH 3 synthesis performance under mild conditions.
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高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2026
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IF 3.1
Zhang Yili,Deng Jingyu,Yang Zitong,Qi Wenkai,Dai Xinyi,Zhang Yuxia
In the study, we present a molten salt-assisted hard-templating strategy for synthesising cobalt and nitrogen-doped carbon nanoflowers (Co/N-CNFs) as high-performance electrocatalysts for highly sensitive and selective electrochemical dopamine detection. The hierarchical surface roughness and excellent conductivity of Co/N-CNFs, combined with their uniformly dispersed Co sites, facilitate exceptional electrocatalytic performance toward dopamine oxidation. Electrochemical measurements demonstrated that the Co/N-CNFs composite exhibited outstanding performance for dopamine sensing, featuring a broad linear response range from 1 to 1000 µM and an exceptionally low detection limit of 0.13 µM. Moreover, the sensor exhibited remarkable stability, excellent anti-interference capability, and high accuracy in actual sample analysis. The work presents an innovative design strategy for Co/N-doped carbon catalytic systems, enabling the detection of dopamine in spiked human serum samples.
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Journal of Environmental Sciences
·
2026
·
IF 6.5
Wenli Wu,Min Chen,Bolang Li,WenQiang Ye,Fei Wang,Kai Li,Ping Ning,Changbin Zhang
Oxygen-enriched CO oxidation is a pivotal reaction in automotive exhaust and indoor air purification. Fine-tuning the active sites represents a significant challenge in this catalytic field. In this work, we modulated the chemical state of Pt on Pt/CeO 2 catalysts by varying pretreatment atmospheres (direct H 2 reduction and sequential O 2 calcination-H 2 reduction), then applied these catalysts to the CO oxidation reaction. It was found that the Pt/CeO 2 catalyst via direct H 2 reduction showed a much higher activity than the Pt/CeO 2 catalyst via sequential O 2 calcination-H 2 reduction. It was revealed that under O 2 -H 2 conditions, a strong metal-support interaction (MSI) introduced the highly dispersed small Pt clusters. Conversely, under H 2 reduction conditions, a moderate MSI causes the formation of larger Pt nanoparticles, exhibiting a significantly increased proportion of metallic states and promoting the activity of CO oxidation. This study provides an effective strategy for designing highly efficient catalysts.
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高影响因子
ACS Catalysis
·
2026
·Vol. 16
·期 15
·14667-14679
·
IF 13.6
Qi Yuntao,Xue Lei,Zhao Shichao,Deng Tiansheng,Qin Yong,Zhang Bin
The hydrogenation of CO 2 to CO represents a promising synthetic pathway to replace coal gasification and methane reforming. Ru-based catalysts showed high activity in CO 2 hydrogenation but lower CO selectivity due to competing methanation reactions. Here, we reported a surface sulfur (S) decoration strategy to shift the methanation to 99% selectivity for CO on the Ru/TiO 2 catalyst in CO 2 hydrogenation. The optimized 2%Ru/TiO 2 -SO catalyst achieved a CO 2 conversion of 57.9% with 100% CO selectivity at 550 ° C, and it operated stably even in a reaction gas containing an H 2 S impurity. Notably, even after high-temperature oxidation treatment at 800 ° C, the 2%Ru/TiO 2 -SO catalyst still retains high CO selectivity (>98.2%). Structural characterization confirms strong S–Ru interactions between S species and Ru nanoparticles in S-decorated catalysts, with highly dispersed S species bonded to the Ru surface as S 2− , thereby leaving the surface Ru atoms in an electron-deficient state. Mechanistic studies reveal that CO was formed via direct dissociation of CO 2 on this 2%Ru/TiO 2 -SO catalyst. The adsorption strength of CO* species and H 2 activation capacity were significantly suppressed on S-decorated catalysts featuring electron-deficient Ru species, thus inhibiting the deep hydrogenation of CO and enabling exclusive CO generation. The surface S decoration strategy employed here will provide insights and guidance for the design of supported metal catalysts with tunable selectivity in other heterogeneous catalytic hydrogenation reactions, particularly those operating at high temperatures.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Jianan He,Adrian Chun Minh Loy,Jining Guo,Ali Zavabeti,Dingqi Wang,Longbing Qu,Raveen Wijesuriya,Yuezhu Xiao,Jitraporn Vongsvivut,Joshua D. Butson,Qinfen Gu,Gang Kevin Li
Fluoride-free one-step molten-salt synthesis of Co-TiS 2 /Ti 3 C 2 T x heterojunction. • In situ growth of Co-TiS 2 on Ti 3 C 2 T x MXene modulates electronic structure. • Co-TiS 2 /Ti 3 C 2 T x catalyst exhibits enhanced HER and OER performance. • In situ synchrotron FTIR and DFT reveal boosted catalytic mechanisms. Two-dimensional MXenes have emerged as versatile platforms for electrocatalysis due to their tunable surface chemistry and layered structures. However, the intrinsic activity of MXenes is limited by their vulnerability in oxidizing and alkaline environments. Herein, we report a one-step molten-salt topochemical transformation that simultaneously tailors MXene surface terminations and constructs an in situ Co-TiS 2 /MXene heterointerface. This method effectively disperses hexagonal Co-TiS 2 nanoparticles, increases the exposure of active sites, and prevents the oxidation and aggregation of Ti 3 C 2 T x , significantly enhancing the overall water splitting performance. The incorporation of S promotes the transformation of the Ti 3 C 2 T x to the Co-TiS 2 derivative, modulates the electronic structure, and is predicted by DFT calculation to provide more favorable adsorption energies of reaction intermediates. Combined experimental characterization, including X-ray absorption spectroscopy, high-resolution transmission electron microscopy, and in situ synchrotron-based Fourier-transform infrared spectroscopy, together with density functional theory calculations, reveals that the MXene-derived Co-TiS 2 stabilizes the Co atoms, facilitating both hydrogen and oxygen evolution reactions. Consequently, the Co-TiS 2 /Ti 3 C 2 T x (T x = S, Cl, O) catalyst exhibits enhanced bifunctional activity in 1 M KOH, with lower overpotentials and excellent stability than pristine Ti 3 C 2 T x MXene. This study highlights the potential of surface-engineered MXenes and their derivatives for the rational design of highly efficient electrocatalysts and provides insight into the role of surface terminations in tuning structure and catalytic performance.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Linkun Liang,Xueping Zheng,Yifang Yao,Shenglin Liu,Jianzhong Wang,Wenshuai Liu,Chunxu Hu,Yuxuan He
In the context of hydrogen energy development, hydrogen production technology based on the hydrolysis of sodium borohydride (NaBH 4 ) has attracted considerable attention owing to its mild reaction conditions and the high-purity hydrogen generation. Nevertheless, the intrinsically sluggish hydrolysis kinetics of NaBH 4 require the development of non-noble metal catalysts that simultaneously achieve high catalytic activity and excellent durability. In this work, a molybdenum-doped cobalt hydroxide (MoO 2 -Co(OH) 2 ) catalyst was fabricated via a homogeneous urea precipitation approach, and its catalytic performance for H 2 generation from NaBH 4 hydrolysis was systematically evaluated. Concurrently, SEM, TEM, and XPS characterizations collectively elucidated the reaction pathway and electronic modulation mechanism involving Mo-doping-induced Co 2+ oxidation and oxygen vacancy generation. Additionally, this study demonstrates that the composite material possesses favorable surface hydrophilicity and exceptional synergistic catalytic activity. Through systematic modulation of the Mo/Co molar ratio, the MoO 2 -Co(OH) 2 catalyst achieved an exceptional hydrogen generation rate (HGR) of 9831.46 mL·min −1 ·g −1 at ambient temperature, concomitant with a markedly reduced activation energy (38.81 kJ·mol −1 ) relative to pristine Co(OH) 2 (68.97 kJ·mol −1 ). Furthermore, the catalytic performance of this system is comparable to, or even superior to, that of state-of-the-art Co-based catalysts. The superior catalytic performance was ascribed to the synergistic contributions of abundant defect sites afforded by the amorphous architecture, the intrinsically enhanced activity stemming from the electronic structure modulation, and the enhanced stability endowed by the compact microstructure.
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