APPLIED SURFACE SCIENCE
·
2016
·
IF 3.15
Yizhou Zhu,Xiangmei Liu,Kelvin W.K. Yeung,Paul K. Chu,Shuilin Wu
One-dimensional (1D) nanostructures of ZnO using atomic layer deposition (ALD) on chitosan (CS) modified carbon nanotubes (CNTs) were first introduced onto the surfaces of biomedical implants. When the content of ZnO is not sufficient, CNTs can strengthen the antibacterial activity against E. coli and S. aureus by 8% and 39%, respectively. CS can improve the cytocompatibility of CNTs and ZnO. The amount of Zn content can be controlled by changing the cycling numbers of ALD processes. This hybrid coating can not only endow medical implants with high self-antibacterial efficacy against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) of over 73% and 98%, respectively, but also regulate the proliferation and osteogenic differentiation of osteoblasts by controlling the amount of ZnO.
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高影响因子
APPLIED CATALYSIS A-GENERAL
·
2024
·
IF 4.7
Meidan Que,Yabo Wang,Ruochen Shi,Xun Sun,Jun Xu,Peihong Ma,Yanbo Sun,Jing Guan,Shengxia An
MIL-125(Ti) is well known for having stable structure, tunable electron structure, and multiple active sites, which is commonly studied in the field of photocatalysis . In this work, a series of rare earth (RE) doped MIL-125(Ti) (RE=Ce, Pr, Tm, Dy, Eu, and Sm) are prepared via the one-step hydrothermal method . Notably, Pr-MIL-125 displays a significantly enhanced catalytic performance than other RE-doped MIL-125, resulting in a maximal CO and CH 4 yield of 13.30 and 0.87 µmol·g −1 ·h −1 , respectively, which are 2.53-fold and 4.14-fold of the pristine MIL-125. The layered morphology endows Pr-MIL-125 with more active sites and facilitates the reaction of photoreduction CO 2 . Furthermore, the promoted photoactivities attributed to Pr ion dopant can act as electron transfer bridge and suppress charge recombination. This work would provide insight and guidance for designing RE-MOF based photocatalysts and enhancing the performance of photoreduction CO 2 .
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高影响因子
PLASMA SOURCES SCIENCE & TECHNOLOGY
·
2024
·
IF 3.3
Yang Wang,Qiuyao Cao,Xi-Ming Zhu,Chun-Meng Du,Klaus Bartschat
Abstract. Introduction: We present an extensive theoretical investigation of the electron impact excitation of doubly-ionized titanium (Ti III) to meet the needs of spectral analysis and plasma modeling.
OBJECTIVES: The main objective of this work is to extend the currently scarce database of both structure and collision data for Ti III.
METHODS: The calculation was performed in the close-coupling approximation using the B-spline R-matrix method. The multi-configuration Hartree–Fock method in combination with B-spline configuration interaction expansions and the non-orthogonal orbitals technique is employed for accurate descriptions of the target wave functions and adequate accounts of the various interactions between the target states. Relativistic effects are treated at the semi-relativistic Breit-Pauli approximation level.
RESULTS: The present close-coupling expansion includes 138 fine-structure levels of Ti III belonging to the 3d2, 4s2, 4s4p, 3d4l (l=0-3), 3d5l (l=0-3), 3d6s, and 3d6p configurations. Comprehensive sets of radiative and electron collisional data are reported for all of the possible transitions between the 138 fine-structure levels. Thermally averaged collision strengths are determined using a Maxwellian distribution for a wide range of temperatures from 102 K to 105 K. The accuracy of the calculated radiative parameters is validated by comparing with available values from the NIST database and previous literature.
CONCLUSION: Given the lack of sufficient currently available experimental and theoretical data, the electron impact excitation cross sections of the Ti III fine-structure levels presented here are systematic, extensive, and internally consistent, thus making them suitable for many modeling applications.
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高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2018
·Vol. 126
·期 1
·353-364
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IF 1.515
Lin Xingqi,Zeng Xingye,Zhou Rujin,Wang Hanlu
Three kinds of Ti-HMS zeolites have been synthesized by using different templates, and their catalytic performance was investigated in deep oxidation-adsorption desulfurization process. Various analysis techniques have been applied to investigate physical and chemical properties of the catalysts. Using cyclohexanone peroxide as an oxidant, the catalytic performance results show that Ti-HMS-12 exhibits highest desulfurization performance (99.9%) without solvents. Dibenzothiophene (DBT) was almost completely oxidized to the more polar DBT sulfone, which could be subsequently adsorbed on the Ti-HMS-12, achieving a unified processes of oxidative-adsorption desulfurization process. Furthermore, the catalyst was recycled for five runs with slight decreases in the catalytic performance and can be easily regenerated by methanol washing.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
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IF 4.175
Qiannan Wu,Qijing Bu,Shuo Li,Yanhong Lin,Xiaoxin Zou,Dejun Wang,Tengfeng Xie
Inevitable drawbacks on α-Fe 2 O 3 photoanodes , such as poor conductivity, short hole diffusion length , high electron-hole recombination rate, limit their photoelectrochemical (PEC) performance for water oxidation . The construction of heterojunction is an effective approach to improve the PEC performance of photoanodes. Herein, we report the design of the WO 3 /Ti–Fe 2 O 3 heterojunction photoanodes, which are synthesized by two simple hydrothermal method . The optimized WO 3 /Ti–Fe 2 O 3 photoanode shows remarkably improved photocurrent of 2.15 mA/cm 2 at 1.23 V versus reversible hydrogen electrode (RHE) without additional cocatalyst , which is higher than that of previous literatures. The improvement benefits from reduced charge transfer resistance in the bulk of Ti–Fe 2 O 3 photoanode and improved charge separation efficiency, which can been further confirmed by electrochemical impedance spectroscopy (EIS), the transient photovoltage (TPV) and the work function (WF) measurement. The present work also provide new opportunities in developing high performance photoanodes for PEC water splitting .
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高影响因子
Journal of Environmental Chemical Engineering
·
2024
·Vol. 12
·期 2
·112109
·
IF 7.4
Nguyen Tien Hoang
In this study, a novel Ti/TiO 2 Blue/SnO 2 -Sb@Ni-La (denoted as SnO 2 -Sb@Ni-La(H)) was successfully prepared by hydrothermal method . The fabricated SnO 2 -Sb@Ni-La(H) electrode exhibited the superior electrocatalytic properties: high oxygen evolution potential (2.34 V vs. SCE), low charge transfer resistance (73.4 Ω cm −2 ), and highest degradation efficiency of benzoic acid (BA) ( k BA = 0.112 min −1 ), compared with other electrodes. The degradation rate of BA on the SnO 2 -Sb@Ni-La(H) was 3.6-fold, 4.7-fold, and 7-fold higher than that of SnO 2 -Sb@Ni-La(T), Ti/TiO 2 Blue, and Ti/SnO 2 -Sb, respectively. The study showed that •OH was the main radical contributing to pollutants degradation and the first-order degradation rate of organic pollutants in electrochemical oxidation (EO) process depends on their reactivity towards •OH ( k •OH,OP ), except for the case of methyl orange (MeO). Among the proposed combination methods, the combination of adsorption and electrochemical oxidation (rGO + EO process) exhibited excellent performance: the first-order degradation rate of P-nitrosodimethylaniline ( k RNO ) in (rGO + EO) process increased by 1.42-fold, compared with the EO process alone. This can be explained by the synergy effect from adsorption of RNO on rGO and the degradation of RNO during the EO process. The hydrothermal deposition combined with thermal decomposition can significantly improve the physical and electrochemical oxidation properties of the Ti/TiO 2 Blue/SnO 2 -Sb@Ni-La electrode: k RNO increased by 3.5-fold, compared with that of 1-time deposition by hydrothermal deposition. In addition, the effect of some operating parameters was investigated, including pH, current density, cathode size and distance of electrodes. This study provided a new method to prepare high-performance Ti/TiO 2 Blue/SnO 2 -Sb@Ni-La electrode and proposed some methods to improve the removal efficiency of the pollutants.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Peng Gu,Yihe Fan,Jin Liu,Zhuang Cai,Jiannan Du,Yidong Song,Ying Dai,Guofeng Wang,Jinlong Zou
Size-controllable Cu 2 O nanocubes grow in-situ on AMXene via Oswald-ripening mechanism. • Cu 2 O induces MXene amorphization, generating edge-ligand unsaturated sites for HER. • The electron-rich Cu + boosts orbital hybridization for selective glycerol oxidation. • The catalyst requires only 1.31 V electrolyzer voltage with stability exceeding 150 h. Glycerol oxidation reaction (GOR) is a mild, sustainable pathway with great potential for producing high-value chemicals such as formic acid (FA). Integrating GOR with hydrogen evolution reaction (HER) circumvents the high energy barrier of anodic oxygen evolution in traditional water splitting. However, achieving selective C C bond cleavage in glycerol-to-FA conversion remains a major technical and scientific challenge. Here, via the Ostwald ripening mechanism, size-tunable cuprous oxide nanocubes are in-situ grown on amorphous MXene (Cu 2 O/AMXene), creating well-defined dual active sites with clear functional division: electron-rich Cu + for GOR and Ti sites for HER. The optimized Cu 2 O-0/AMXene (28 nm Cu 2 O) delivers a HER overpotential of 32 mV at 10 mA cm −2 , a GOR potential of 1.13 V at 10 mA cm −2 , and a full electrolyzer voltage of 1.31 V, while maintaining excellent catalytic efficiency after 150 h of continuous operation. Cu 2 O growth induces MXene amorphization, generating edge ligand-unsaturated Ti sites that enhance water dissociation for proton supply, while Ti 4+ promotes hydrogen spillover to transfer protons to Ti 3+ for efficient HER. Electron-rich Cu + forms asymmetric Ti-O-Cu interactions via electron donation from AMXene, enhancing orbital overlap with p orbitals of glycerol oxygen atoms for GOR. This electron-rich environment inhibits Cu + oxidation to Cu 2+ at high anodic potentials, stabilizing the active s - p hybrid configuration. This work also highlights the critical role of O-functional groups on AMXene and lattice O atoms in Cu 2 O for strengthening metal-support interactions. Download: Download high-res image (225KB) Download: Download full-size image
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PubMed
高影响因子
Advanced Science
·
2026
·
IF 14.1
Yanmin Liang,Hongyue Ma,Feier Bai,Jing Zhang,Yan Qi,Bing Shao
The interference of phospholipids in serum poses a critical bottleneck for nontargeted human biomonitoring of chemical hazards. Here, we report a Ti-doping strategy to activate adjacent Zr sites in a bimetallic Zr/Ti metal-organic framework (B-Zr/Ti MOF) for cooperative and efficient phospholipid removal. By precisely engineering the Ti content, the optimal B-Zr/Ti MOF achieves near-complete removal of major phospholipid subclasses while maintaining high recoveries (>50%) for over 500 diverse chemical hazards, even at trace levels (10 ng mL − 1 ). Combined XPS, FT-IR, and DFT calculations reveal that Ti incorporation modulates the local electronic environment, converting adjacent Zr sites into highly active Lewis acid centers that synergistically anchor phosphate headgroups via inner-sphere coordination. When integrated into a nontargeted LC-HRMS workflow, this material dramatically reduces matrix effects and expands detectable feature coverage. This work establishes bimetallic node engineering as a powerful strategy to overcome matrix interference in exposomics and precision biomonitoring.
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PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Mengyao Ma,Mengmeng Hu,Yifan Zhu,Renjie Wang,Tongliang Wang,Jinnan Gan,Runjing Cai,Nana Dai,Ting Gao,Qiaohuan Cheng,Qianqian Chen,Huijuan Ran,Fei Peng,Qingsong Zhu
In-situ growth of Ti-MOF@rGO improves dispersion, reduces agglomeration, and facilitates electron transport. • 0.3–400 μM linear range, 0.114 μM LOD (S/N=3), selective vs UA/AA, stable/reproducible. • Synergistic Ti-MOF@rGO boosts DA adsorption and electron transfer via 2e - /2H + redox. Electrochemical detection of dopamine (DA) is critically important for the diagnosis and monitoring of neurological disorders. In this study, we present a novel composite material, Ti-MOF@rGO, synthesized in-situ through the integration of titanium-based metal-organic frameworks (Ti-MOFs) with reduced graphene oxide (rGO). This hybrid material effectively combines the abundant redox-active sites of Ti-MOF with the excellent electrical conductivity and large specific surface area of rGO, thereby facilitating efficient charge transfer and enhanced DA adsorption. The Ti-MOF@10%rGO-modified glassy carbon electrode demonstrated outstanding electrocatalytic performance for DA oxidation, exhibiting a wide linear detection range of 0.3–400 μM and a low detection limit of 0.114 μM (S/N = 3). The sensor exhibited high selectivity against common interferents such as uric acid and ascorbic acid, along with excellent repeatability, reproducibility, and cycling stability. This work presents a promising strategy for the rational design of MOF-based composites and offers a robust platform for ultrasensitive and selective electrochemical biosensing applications.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·
IF 6.3
Minghao Zhao,Kun Yang,Wangwei Ru,Hao Ji,Yibo Wang,Wei Chen,Xiaobin Tang
The passivation behavior of polycrystalline structural ceramics under extreme corrosion conditions is critical for future advanced energy applications, including nuclear waste immobilization. The current study investigated the chemical durability of the high-entropy pyrochlore rare earth Ti pyrochlore (HE-RE 2 Ti 2 O 7 ) by focusing on the fundamental understanding of the nexus between chemical composition and the structural evolution of the surface formation of passivation film. Results provide evidence to support that the formation of a multilayer surface passivation film enriched in both A and Ti elements is associated with a dissolution-reprecipitation mechanism, which is strongly associated to the metal-oxygen bonding strength. The formation of passivation film dominated by the synergistic effect of localized bonding environment led to dynamic transition between congruent and incongruent leaching mechanisms, and further affect the chemical durability. These findings establish a framework for designing corrosion-resistant nuclear waste forms by focusing on its surface alteration behavior through tuning the chemical composition.
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高影响因子
JOURNAL OF APPLIED ELECTROCHEMISTRY
·
2026
·Vol. 56
·期 5
·82
·
IF 3.7
Liu Yanyue,Guo Teng,Chu Yuanhong,Chen Shiguo,Li Zijiong
Aqueous zinc-ion batteries have emerged as a highly promising energy storage technologies due to their abundant resources, high safety, and environmental friendliness. However, the cycle stability of Aqueous zinc-ion batteries is severely constrained by zinc dendrite growth on the anode and accompanying side reactions in the electrolyte. Mitigating this effect is crucial for the large-scale application of zinc-ion batteries, and separator modification is regarded as an effective strategy to address these challenges. Here, a method of modifying the glass fiber composite separator with amino-functionalized MXene (Ti₃C₂Tₓ) is attempted to alleviate these problems. The modified Ti₃C₂Tₓ was uniformly loaded on the surface of glass fiber separator by vacuum filtration to fabricate the composite separator. Systematic characterization and electrochemical testing revealed that the composite separator with an optimal coating loading of 2 mg cm⁻² significantly enhanced battery performance. The cycle life of Zn//Zn symmetric cells were markedly extended at 5 mA cm⁻², and specifically, reached 250 h at 0.5 mA cm⁻², which is about 8 times longer than that of the unmodified glass fiber separator (~ 30 h). Furthermore, the Zn||MnO₂ all-cell based on this composite separator also exhibited a higher capacity retention rate after 1200 cycles compared to the blank separator group. This provides an effective research direction for the design of high-performance Aqueous zinc-ion batteries separators. Graphical abstract
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Jinting Chen,Lei Wang,Ming Yao,Yue Pan,Zeyu Zhang,Yawei Li,Haixiang Huang,Bogu Liu,Jianguang Yuan,Bao Zhang,Ying Wu
To address the sluggish dehydrogenation kinetics and high operating temperatures of LiBH 4 , Ti 2 VC 2 MXene was incorporated with LiBH 4 to modify its dehydrogenation performance. With 40 wt% Ti 2 VC 2 MXene additive, the onset dehydrogenation temperature of LiBH 4 is reduced to 98.31 °C, while the peak hydrogen release occurs at 332.86 °C. Isothermal dehydrogenation measurements demonstrate that the composite rapidly desorbs 9.50 wt% H 2 within 40 min at 325 °C, 10.67 times faster than that of LiBH 4 . Furthermore, the addition of 40 wt% Ti 2 VC 2 MXene effectively lowers the activation energies for the dehydrogenation to 104.76 and 112.99 kJ mol⁻ 1 , respectively. Mechanism studies reveal that the enhanced dehydrogenation performance originates from the in-situ formation of catalytic active species, including Ti 0 , V 0 and Li 3 BO 3 , promoting the cleavage of ionic and covalent bonds in LiBH 4 . Simultaneously, the multiphase Ti/V/Li 3 BO 3 hetero-ensembles create abundant interfacial boundaries, serving as efficient pathways for hydrogen diffusion and accelerating the dehydrogenation kinetics.
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高影响因子
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