ChemistrySelect
·
2026
·Vol. 11
·期 10
·e07017
·
IF 2.3
Youchen Sun,Meng Gao,Aqing Chen,Jun Zhang
Ti/SnO 2 -Sb electrodes are widely used in electrocatalysis due to their high oxygen evolution potential (OEP) and low cost, but their practical application is limited by the short service life. In this study, Ti/SnO 2 -Sb electrodes were modified by introducing Ta 2 O 5 nanopowder through a thermal decomposition method to form SnO 2 -Ta 2 O 5 heterojunctions. The structural, morphological, and electrochemical properties of the electrodes with varying Ta 2 O 5 concentration were systematically investigated by XRD, XPS, FE-SEM, and electrochemical characterization techniques. Results show that Ta 2 O 5 incorporation induces lattice expansion, increases surface roughness, and improves the electrochemical active surface area by more than fourfold. The modified electrodes exhibit a significantly enhanced OEP of up to 2.20 V (vs. RHE), a threefold increase in double-layer capacitance, and a tenfold improvement (about 18 h) in accelerated service life under acidic conditions (100 mA/cm 2 ), compared to Ti/SnO 2 -Sb electrode. These findings demonstrate that Ta 2 O 5 doping effectively enhances catalytic activity, stability, and durability of Ti/SnO 2 -Sb electrodes, providing a promising strategy for the design of high-performance anodes for electrocatalytic applications.
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高影响因子
JOURNAL OF CATALYSIS
·
2026
·
IF 6
Jian Shi,Xiao Liang,Qian Zhang,Yaowei Xu,Xiyang Yu,Bing Tang,Donghuai Tu,Hui Ma,Wei Mao,Jianming Yang,Chunran Chang,Jian Lu,Yadong Li
The heterogeneous catalysis of HCl oxidation over Ru-based catalysts is a green and low-carbon chemistry route to recover high-purity Cl 2 from HCl byproduct for industrial practice. Herein, we report a facile fluorination strategy to fabricate durable supported Ru/Ti oxide catalysts for efficient HCl oxidation. The space–time yield by Ru/Ti-hf can reach up to 26.9 g Cl2 ·g cat −1 ·h −1 with an ultrahigh HCl TOF of 1.5 × 10 4 h −1 . After 24-h accelerated deactivation, this catalyst exhibits over 60% higher activity compared to the conventional Ru/Ti-r. This method allows for establishing highly dispersed and sintering-resistant RuO x species. The fluorine incorporation on TiO 2 surface generates abundant oxygen vacancies and Ru active sites, enhancing the activation capabilities for oxygen. Mechanistic calculations further suggest that the Cl-atom recombination step demanding the highest activation energy is facilitated with a lower energy barrier, due to the accumulation of electrons at the 4 d orbital of Ru sites and the transfer of electron to the antibonding orbital of Ru-Cl by moderate fluorine incorporation. These findings provide a nimble approach to fabricating efficient and durable catalysts promising for HCl oxidation in industry.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Xiao-jie Jiang,Yu-tong Zhu,Chao Li,Guang-Yu Pan,Mei-Ling Xu,Jian Jia,Xin Cheng,Kui Li
Driven by the global goal of carbon neutrality, solar-driven photocatalytic overall water splitting provides a critical pathway for directly converting light energy into storable green hydrogen. However, solar to hydrogen efficiency is often limited by the slow kinetics of charge carrier separation, migration, and surface reactions. Although MOF/inorganic semiconductor heterojunctions can promote carrier separation by establishing built-in electric fields, dense inorganic phases often block MOF pores and shield active sites, thereby compromising the structural advantages of MOFs. Herein, we propose a dual-ligand engineering strategy to regulate the electronic structure and piezo-photocatalytic behavior of titanium-based MOFs, achieving efficient piezo-photocatalytic overall water splitting. By co-coordinating terephthalic acid and 2-aminoterephthalic acid with titanium precursors, the as-synthesized material preserves the high specific surface area of MOFs while introducing amino-functionalized linkers into the framework. The incorporation of amino ligands breaks the centrosymmetry of the material and endows the dual-ligand MOF with piezoelectricity. Under the synergistic excitation of light and ultrasound, carrier recombination is significantly suppressed and charge transfer within the framework is accelerated, enabling efficient and stable overall water splitting without sacrificial agents. This study provides a feasible dual-ligand modulation strategy for improving MOF-based piezo-photocatalytic overall water splitting and elucidates the synergistic regulation mechanism of charge dynamics and surface reaction kinetics under multi-field coupling.
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高影响因子
Coatings
·
2026
·Vol. 16
·期 4
·475
·
IF 3.4
Siqi Zhu,Chao Yao,Xiaopan Li,Yifan Yuan,Mengmeng Chen,Yiyun Kong,Yujie Fan,Jing Xia,Chun Yao
Highlights•A Ti-HA/TiO2photocurable composite resin coating was fabricated on TC4 titanium alloy via a simple coating curing process, with controllable thickness and good interfacial bonding.•The porous coating effectively promotes remineralization capacity and bioactivity by introducing bioactive Ca/P elements.•Benefiting from the synergistic photocatalytic effect of Ti-HA and TiO2, the coating achieves a high antibacterial rate.Titanium alloys are widely used in dental implants due to their excellent mechanical properties. However, their inertness and poor antibacterial activity cause interfacial loosening and failure, shortening service life. This study integrates surface microtexturing with coating technologies, employing modified light-curing composite resins to boost the bioactivity of medical titanium alloys via surface modification. The results reveal that surface microtexturing enlarges the coating-substrate contact area by 42.5% compared with rough surfaces, concurrently diminishing stress per unit area, and the coating on microtextured Ti-6Al-4V (TC4) surfaces achieves adhesion with a damaged area of only 0.5%, thereby notably enhancing adhesion between the coating and TC4 matrix. In comparison, with rough surfaces (surface roughness of 0.658 μm), smooth TC4 planes (surface roughness of 0.014 μm) show a significantly reduced bacterial colony count (from 130 ± 6 to 42 ± 3) with an antibacterial rate of 67.7%, as the water contact angle on TC4 surfaces increases with decreasing roughness (reaching 80.95° on the smoothest surface), making bacterial adhesion more challenging and reducing colonization. The composite resin coating based on a mixture of titanium-doped hydroxyapatite and titanium dioxide (Ti-HA/TiO2) further improves the antibacterial rate to 74.6% through a photocatalytic synergistic effect and endows TC4 with excellent remineralization capacity—mineralization deposits appear on the coated surface after 3 days of immersion in artificial saliva, while no obvious deposits are found on uncoated rough and smooth surfaces even after 7 days—thereby enhancing its bioactivity effectively. This study on the modification of Ti-based implant surfaces will enrich the field by introducing new technologies and methodologies. These advancements provide a theoretical basis for improvement of the remineralization capacity and antibacterial properties of Ti-based dental implants, thereby promoting broader biomedical applications.
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高影响因子
Energy Sources Part A-Recovery Utilization and Environmental Effects
·
2022
·
IF 2.902
Bage Alhamdu Nuhu,Humphrey Adun,Olusola Bamisile,Mustapha Mukhtar
In this study, Ti-Fe-Si composites were prepared by one step ball-milling method as anode materials for Li-ion batteries. The effects of ball-milling speed and time were studied by X-ray diffraction, electron microscopy, and 57Fe Mössbauer spectroscopy. Changes in the composition and microstructure of the composites were observed and related to the electrochemical performance. Increasing ball-milling speed led to the formation of FeSix alloys that reduced the specific capacity while increasing the ball-milling time improved the particle size morphology and homogeneity. Discharge/charge profiles for the first two cycles were carried out at 0.05C current rate (1C = 1260 mAh.g−1for Li3.75Si). The first discharge for Ti-Fe-Si showed a LixSi reaction plateau of 1100 mAh.g−1, which were reversible and yielded columbic efficiency (CE) 77% and 90% in the first and second cycles, respectively. This capacity plateau indicated the insertion of about 3.25 Li into silicon. For the composite containing an additional 10% carbon SP, the theoretical capacity was about 1130 mAh.g−1, the discharge curve showed that the first discharge plateau reaches 1030 mAh.g−1 corresponding to 3.5 Li with the first CE was about 85%, and 98% for the second cycle. The addition of carbon to Ti-Fe-Si-C played a key role in capacity retention. The best results were obtained for the composite Fe/Ti/Si (1:1:2) with 10 wt% of carbon, ball-milled at 500 rpm for 48 hours. The specific capacities were about 900 mAh.g−1 at C/5 and 700 mAh.g−1 at 1C (C = 1200 mAg−1) with a capacity retention of about 90% for 100 cycles.
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高影响因子
NEW CARBON MATERIALS
·
2026
·Vol. 41
·期 3
·641-651
·
IF 7.2
Zhiqiang Yang,Hao Yang,Rui Wang,Yi Wan,Yan Zhang,Chenhao Liu,Zian Zhang,Yuqi Li,Mingbo Wu,Han Hu,De Chen
Aqueous zinc-ion batteries (AZIBs) have significant promise as large-scale energy storage devices due to their high safety, low cost, and environmental friendliness. However, their application has been constrained by limited operational voltage windows. A high-voltage-resistant Ti-graphene-Ti cathode current collector (TGT) was designed and fabricated by three-dimensional (3D) printing. The surface of the TGT has a Ti x O y protective layer, which effectively suppresses electrolyte decomposition under high voltage conditions so that the voltage window of the battery is extended to 1.0–2.2 V without the obvious formation of by-products. Simultaneously, the graphene layer in the TGT structure significantly improves the adsorption and insertion/extraction kinetics of cations, resulting in a high specific capacity of 307.5 mAh g −1 and a prolonged cycling life of the battery. The resultant AZIBs have a stable charge/discharge performance over 400 cycles at a high voltage. Furthermore, the influence of the geometric arrangements of Ti and graphene in the 3D printing process on the energy storage mechanism was investigated and provided novel insight for the development of high-voltage-resistant composite cathode current collectors for AZIBs.
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高影响因子
JOURNAL OF COORDINATION CHEMISTRY
·
2023
·
IF 1.9
Jinyan Tan,Na Zhang,Ling Wang,Liduo Chen,Cuiqin Li,Jun Wang
Metal-organic framework MIL-125(Ti)-NH2 was prepared and coordinated with salicylaldehyde and NiCl2·6H2O to create a heterogeneous catalyst for ethylene polymerization. The structure of the products was characterized by a variety of physical methods, such as Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), inductively coupled plasma mass spectrometry (ICP-MS), and nitrogen adsorption-desorption. The catalytic performance of MIL-125(Ti)-NH2-Sal-Ni was also investigated. The results showed that the reaction temperature, Al/Ni molar ratio, and ethylene pressure influenced on the catalytic activity and product selectivity. Under optimal reaction conditions, the catalytic activity of MIL-125(Ti)-NH2-Sal-Ni for ethylene oligomerization could reach 5.90 × 104 g·(mol Ni·h)−1 using cyclohexane as the solvent and MAO as the co-catalyst; the main products were C4 and C6. In addition, MIL-125(Ti)-NH2-Sal-Ni had good catalytic stability and recycling, which could be reused at least twice without significant loss of activity. Moreover, based on the evaluation of catalytic performance, the catalytic ethylene oligomerization mechanism of MIL-125(Ti)-NH2-Sal-Ni was also deduced.
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KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2022
·Vol. 39
·期 1
·96-108
·
IF 3.146
Zeng Xingye,Adesina Adeyemo,Li Ping,Wang Hanlu,Zhou Rujin
Ti-containing Mobil composition of matter-twenty-two (Ti-MWW) zeolite was prepared via a two-step post-synthesis process and then characterized by X-ray fluorescence, nitrogen adsorption-desorption isotherms, Fourier transform infrared absorption spectra, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectra. These results indicate that the textural properties of MWW were well preserved after acid treatment and incorporation of titanium. An adsorptive-oxidative desulfurization (AODS) system was successfully developed on the basis of a model oil containing dibenzothiophene (DBT) with the as-prepared Ti-MWW being the catalyst and adsorbent and cumene hydroperoxide (CHP) being the oxidant. The parameters influencing the desulfurization performance were systematically investigated. These parameters include the Ti-MWW dosage, the reaction temperature, the stirring speed, the molar ratio of CHP to DBT and the additions of olefins and aromatics to the system. The conversion rate of DBT reached 99.6% via the catalytic oxidation process and the turnover frequency was 40.1 h −1 . Meanwhile, the oxidation products of DBT were removed by Ti-MWW adsorption. The recycling and regeneration performance of Ti-MWW were also investigated, and the DBT conversion reached 99.5% using the regenerated Ti-MWW. This work provides useful information for the construction of solvent-free oxidative desulfurization systems using a zeolite.
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高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Menghan Qin,Yumiao Shi,Dingkun Lu,Jingjing Deng,Guoyue Shi,Tianshu Zhou
Due to the excessive use, cephalosporin antibiotics have been detected in various aquatic environments, which may result in environmental and health concern. In this study, bimetallic metal–organic frameworks (MOFs), Hf-UiO-66 and Ti-UiO-66, were successfully designed and obtained via post-synthetic method from UiO-66 for the adsorption of cefoperazone. A serious of adsorption experiments were investigated. The adsorption kinetics and isotherms demonstrated that the adsorption process followed pseudo-second-order kinetic model and Langmuir isotherm model. Hf/Ti-UiO-66 exhibited much better adsorption performance than the undoped UiO-66. Particularly, Hf-UiO-66 had the highest adsorption capacity (346.0 mg g −1 ). With the introduction of Hf or Ti, the chemical coordination environment changed, which resulted in defective structures of MOFs. Such defective structures increased the adsorption active sites, changed the surface charges and enlarged pores. Based on the characterization by FT-IR, XPS, and zeta potential, it was identified that the electrostatic attraction, π-π stacking, hydrogen bonding and metal complexation were the driving force for the high adsorption capacity of the bimetallic MOFs. The as-prepared MOFs displayed good stability and reusability. This work provides a great prospect for the design and application of bimetallic defective MOFs in cephalosporins removal in environmental water.
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Catalysis Science & Technology
·
2022
·Vol. 12
·期 15
·4837-4850
·
IF 6.177
Haoyi Lin,Jiaxing Zhang,Qingxu Duan,Kaixuan Yang,Weiping Liao,Shixue Qi,Hongying Lü,Zhiguo Zhu
Plentiful heteroatom-containing zeolites as versatile redox catalysts have been successfully post-synthesized via the top-down methodology, where the starting aluminosilicate zeolites are normally expected to be highly dealuminated to maximize the amounts of silanol nests and occasionally to evade the detrimental effect of framework Al ions on the catalytic performance. Herein, our proposed dealumination-controlled strategy for the synthesis of hierarchical Ti–Y zeolite breaks through this concept. Framework-substituted Ti and tri-coordinated Al species were afforded from the interaction of Ti ions with dealumination-derived silanol nests and from the process of acid treatment, respectively. Structure–function relationships revealed that Lewis acid sites were the catalytically active centres of Ti–Y zeolite in oxidative desulfurization with hydrogen peroxide as the oxidant, which came from the cooperative effect of dual active sites containing framework-substituted Ti and tri-coordinated Al species. The amounts of Lewis acid sites demonstrated a volcanic-type trend as the acid-treatment time increases. The reusability, regeneration ability, deactivation mechanism were also systematically investigated in oxidative desulfurization. Thus the Ti–Y zeolite catalyst was also effective for Baeyer–Villiger oxidation of 2-adamantanone. This work discloses the effectiveness of preparing an efficient Ti–Y zeolite catalyst with cooperative dual active sites via a dealumination-controlled strategy, which bears potential application for constructing other heteroatom-containing FAU-type zeolites with Lewis acid property.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yueyue He,Wei Xiang,Genpin Lv,YanJun Zhong,Yang Song,Kun Zhou,Zhenguo Wu,Jun Zhang,Erqiang Yang,Xiaodong Guo
The recent discovery of fast Li-ion transport networks in Li-rich disordered rock-salt (DRX) cathodes expands vastly composition space of high-energy–density cathode materials. Despite numerous Nb, Mo and W based DRX materials have been reported, high energy density DRX materials with composition of inexpensive, eco-friendly and earth abundant elements still urgently need to be developed. Herein, a promising set of Ti based oxyfluorides Li 2 Ti 1/3 Ni 1/3 M 1/3 O 2 F (M = Mn, Fe), which contain high voltage Ni 2+ /Ni 4+ redox couple and low-cost redox couple with Fe and Mn were successfully synthesized. Benefited from the stable Ni 2+ / 4+ and Mn 3+ / 4+ redox and moderated anion redox, Li 2 Ti 1/3 Ni 1/3 Mn 1/3 O 2 F oxyfluoride exhibits high discharge capacities of 285.3 mAh g −1 and energy content of 909.5 Wh kg −1 as well as relatively stable cyclability. Especially, high discharge capacity of 215 mAh g −1 above 3 V acquired by coordination utilization of cation and anion redox for Li 2 Ti 1/3 Ni 1/3 Mn 1/3 O 2 F endows the oxyfluoride with high energy quality, showing enormous potential for practical utilization in the future. For Li 2 Ti 1/3 Ni 1/3 Fe 1/3 O 2 F, the poor reversibility of Ni 2+ /Ni 4+ redox and much higher oxygen charge redox are the main reasons for the much worse capacity retention, and the activation of Fe 2+ /Fe 3+ redox at low voltage partially contributes to the decreased discharge voltage. Density-functional theory calculation reveals that localized oxygen 2p orbital of Li 2 Ti 1/3 Ni 1/3 Fe 1/3 O 2 F is closer to the Fermi level than that of Li 2 Ti 1/3 Ni 1/3 Mn 1/3 O 2 F, which would ultimately lead to much higher content of oxygen redox and relatively lower capacity retention. The synergistic utilization of multiple cation redox reservoirs which consist of high voltage redox couple and low-cost redox couple, and small quantity of O redox centers to construct high energy quality DRX materials would provide new reference for developing other cathodes.
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ANALYTICA CHIMICA ACTA
·
2020
·
IF 5.977
Zixing Xu,Yonglei Wu,Hao Wu,Nianrong Sun,Chunhui Deng
Salivary phosphoproteome holds great promise in clinic diagnosis. For profiling of salivary phosphoproteome, it is essential to develop efficient enrichment methods prior to mass spectrum (MS). Among developed enrichment strategies, immobilized metal ions affinity chromatography (IMAC) has exhibited outstanding performance. In this work, we report a coherent approach where polydopamine (PDA) is first utilized to form mesoporous structure through soft templating method, then chelated with Ti 4+ to construct hydrophilic polydopamine-derived magnetic mesoporous nanocomposite (denoted Fe 3 O 4 @mPDA@Ti 4+ ). In virtue of the merits including ordered mesoporous channels, appropriate superparamagnetism , and abundant Ti 4+ , the enrichment strategy based on Fe 3 O 4 @mPDA@Ti 4+ combined with MS is employed for accurate identification of phosphopeptides in β-casein digest and human saliva. As expected, Fe 3 O 4 @mPDA@Ti 4+ revealed a great selectivity (1:200) and a low detection limit (0.1 fmol μL −1 ) toward phosphopeptides. More importantly, the further successful capture of phosphopeptides from human saliva indicated the prominent potential of this method for seeking phosphopeptide biomarkers in further analysis.
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PubMed
高影响因子
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