CERAMICS INTERNATIONAL
·
2026
·
IF 6
Xiufen Yang,Runzhi Han,LiWei Shi,YiXin Li,Leiming Chen,Chuanfu Huang
BiFeO 3 (BFO) is an attractive visible-light-active photocatalyst but suffers from a relatively wide band gap, rapid charge-carrier recombination and photocorrosion, which collectively result in poor cycling stability. Herein, we employ a B-site Ti 4+ single-doping strategy to construct a series of BiFe 1-x Ti x O 3 (x = 0, 0.05, 0.10, 0.15, 0.20) photocatalysts with enhanced durability. Ti 4+ incorporation improves the structural stability of the TiO 6 /FeO 6 octahedral framework and mitigates photocorrosion, while simultaneously creating oxygen-vacancy (OV)-related defect states that facilitate charge separation. The optimized composition, BiFe 0.90 Ti 0.10 O 3 (10% BFTO), achieves 99.98% degradation of Congo red (CR) within 120 min under visible-light irradiation in the presence of H 2 O 2 , which is 8.79% higher than that of pristine BFO. Remarkably, 10% BFTO retains 97.97% of its initial activity after 24 consecutive cycles, corresponding to only a 2.01% loss in performance and, to the best of our knowledge, representing one of the highest cycling stabilities reported for BFO-based photocatalysts in dye degradation. Combined microstructural, XPS, photoluminescence and UV–Vis diffuse reflectance analyses indicate that Ti 4+ mono-doping narrows the band gap to 1.86 eV, strengthens visible-light absorption and generates OV-related defect states that promote charge separation and reactive oxygen species (ROS) formation. This work provides a simple single-element doping paradigm for designing high-activity, ultrastable photocatalysts and offers a promising route toward practical photocatalytic applications.
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高影响因子
Journal of Energy Chemistry
·
2026
·
IF 15.6
Yeqing Shen,Guoyao Li,Junduo Chen,Hezhou Liu,Huanan Duan
The advancement of all-solid-state lithium batteries (ASSLBs) is significantly hindered by the trade-off between ionic conductivity and interfacial stability of solid-state electrolytes (SSEs). Chloride SSEs, particularly Li 2 ZrCl 6 , offer high oxidation stability but suffer from moderate ionic conductivity and intrinsic instability against lithium metal. This work, by introducing redox-active aliovalent substituents, attempts to address these interconnected challenges and endow extra electrochemical capacity for chloride electrolytes. Specifically, Li 2+4 x Zr 1−4 x Ti 3 x Al x Cl 6 (4 x = 0.15) exhibits enhanced ionic conductivity (0.87 mS cm −1 ) and low activation energy (0.218 eV). Interestingly, cyclic voltammetry and X-ray photoelectron spectroscopy tests confirm that the incorporated Ti 3+ ions serve as reversible redox centers (Ti 3+ /Ti 4+ ), providing the chloride electrolyte an extra specific capacity of 9.68 mAh g −1 . This transforms the SSE from an ion conductor into a capacity contributor. Furthermore, by designing a Li 5.4 PS 4.4 Cl 1.6 (LPSC)-Li 2+4 x Zr 1−4 x Ti 3 x Al x Cl 6 bilayer electrolyte, the chloride acts as an “anchor” layer to effectively suppress the dendrite propagation, enabling the symmetric lithium cell to cycle stably at 0.6 mA cm −2 . When assembled into ASSLBs with LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NMC811) cathode and Li anode, the battery delivers a high specific capacity of 185.30 mAh g −1 at 0.05 C, demonstrating superior rate capability and cycling stability (84.12% capacity retention after 120 cycles at 0.2 C) compared with the unsubstituted chloride. This work presents a paradigm-shifting approach to designing redox-active, high-performance chloride SSEs, paving a new avenue for developing high-energy-density ASSLBs.
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高影响因子
ACS Applied Electronic Materials
·
2026
·
IF 4.7
Yujie Hu,Yurong Chi,Zhengyan Zhu,Pulin Li,Mingliang Li,Gang Shao,Hongliang Xu,Hailong Wang,Hongxia Lu
To prepare absorbing materials with strong reflection loss under lower-temperature conditions, multiple elements were introduced into SrFeO3–x based on the design of high-entropy components. The results showed that the absorbing material Sr(Cr1/5Mn1/5Fe1/5Co1/5Ti1/5)O3–x with strong reflection loss could be obtained by the solid-phase method at 1000 °C after Ti4+ was introduced into the B site. It is worth noting that at 1100 °C, the minimum reflection loss (RLmin) of the high-entropy ceramic is −43.43 dB, and the effective absorption bandwidth (EAB) is 5.04 GHz. At 1200–1300 °C, the RLmin values of high-entropy ceramics at 4.60 and 5.00 mm are −50.26 and −53.09 dB, respectively. Ti4+ plays a dual role as a “structural stabilizer” and “electromagnetic property regulator” in high-entropy ceramic absorbing materials. Its high diffusion coefficient realizes low-temperature sintering of materials, and its multiscale effect (lattice distortion and heterogeneous interface) leads to “strong wave-absorbing capacity”. The excellent wave-absorbing performance is also attributed to the lattice distortion and large interface structure. Meanwhile, the design of Ti4+ and other B-site high-entropy elements to construct a magnetic–dielectric cooperative mechanism and oxygen vacancy defect engineering are both key to achieving excellent performance. In addition, high-entropy ceramics containing Ti4+ have high stability, which extends the service life of the material and provides a greater space for practical applications of absorbing materials.
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高影响因子
INORGANIC CHEMISTRY
·
2018
·
IF 4.7
Shuai Chen,Wei-Hui Fang,Lei Zhang,Jian Zhang
Six crystalline polyoxo-titanium clusters (PTCs) derived from oximes, namely, Ti4(μ4-O)(OMe)6(L1)4 (PTC-125; H2L1 = salicylaldoxime), H[Ti5(μ2-O)(μ3-O)2(OMe)3(L1)6] (PTC-126), Ti6(μ2-O)(μ3-O)2(OiPr)10(OAc)2(L2)2 (PTC-127; H3L2 = salicylhydroxamic acid; HOAc = acetic acid), Ti7(μ3-O)2(OEt)18(L2)2 (PTC-128), Ti12(μ2-O)4(μ3-O)4(OEt)20(L2)4 (PTC-129), and Ti18(μ2-O)10(μ3-O)8(μ4-O)2(OEt)30(L3)2 (PTC-130; HL3 = acetoxime) have been solvothermally synthesized and structurally characterized. Compared with the reported solid-state monomer, dimer, trimer, and tetramer titanium oximes, these compounds possess high nuclearity structures in the range Ti4, Ti5, Ti6, Ti7, Ti12, and Ti18 as a result of the presence of oxo bridges. Even though three examples of tetranuclear and hexanuclear derivatives have been documented, PTC-130 with a centrosymmetric Ti18 cluster core represents the currently highest PTC compound in the oxime system. In addition, Ti/oximate ratio by solvothermal synthesis in this work possessed a broad range from 0.83:1 to 9:1, different from the constant ratio of 1:1 in the reported ones. According to the solid-state UV–vis diffuse reflectance measurement, the existence of oxime ligands largely enhanced their visible light harvest. Furthermore, their photocurrent response properties are also studied.
研究领域:
无机化学
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材料科学
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光化学
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PubMed
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2017
·Vol. 40
·期 7
·1516-1523
·
IF 2.557
Yanting He,Wei Liu,Lei Chen,Guo Lin,Qi Xiao,Chenling Gao,Wu Jianlin,Zian Lin
Currently, great challenges to top-down phosphoproteomics lie in the selective enrichment of intact phosphoproteins from complex biological samples. Herein, we developed a facile approach for synthesis of Ti 4+ -immobilized affinity silica nanoparticles and applied them to the selective separation and enrichment of intact phosphoproteins based upon the principle of metal(IV) phosphate/phosphonate chemistry. The as-prepared affinity materials exhibited high selectivity and adsorption capacities for model phosphoproteins (328.9 mg/g for β-casein, 280.5 mg/g for ovalbumin, and 225.8 mg/g for α-casein), compared with nonphosphoproteins (79.28 mg/g for horseradish peroxidase, 72.70 mg/g for BSA, and 27.28 mg/g for lysozyme). In addition, the resuability of the affinity silica nanoparticles was evaluated, and the results demonstrated a less than 10% loss of adsorption capacity after six adsorption–regeneration cycles. The practicability of the affinity materials was demonstrated by separating phosphoproteins from protein mixtures and drinking milk samples, and the satisfactory results indicated its potential in phosphoproteomics analysis.
研究领域:
分析化学
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蛋白质组学
·
生物化学
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PubMed
高影响因子
Journal of Physical Chemistry C
·
2015
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IF 4.772
Yunfang Ji,Wei Guo,Huihui Chen,Longshuai Zhang,Song Chen,Mutian Hua,Yuhan Long,Zhuo Chen
Constructing unique nanocomposites to facilitate charge transfer and promote catalytic activity provides a promising approach for enhancing solar-to-hydrogen efficiency. However, revealing the catalytic surface state and understanding their roles in the photocatalytic process remain elusive. Here, we develop a facile and mild solution method for ultrathin TiO2 nanosheets with a large specific surface area and enhanced surface Ti3+ accumulation. Moreover, we demonstrate a hybrid nanosystem composed of ultrathin 2D TiO2 nanosheets directly coupled with 0D CdSe QDs for hydrogen generation. The 0D CdSe QDs increase visible light absorption ability after being coupled with the TiO2 nanosheets. Owing to the synergistic effect between the quantum dots and nanosheets, the apparent quantum efficiency increases to 45% at 380 and 450 nm, and the H2 evolution exhibits a 10-fold enhancement. EPR results indicate that the surface Ti3+ greatly promotes H free radical production due to the redox couple Ti3+/Ti4+ providing an efficient route for the photoexcited electron–hole separation. Our findings provide new insights toward understanding and exploiting highly efficient photocatalyst.
研究领域:
材料科学
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能源化学
·
光催化
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高影响因子
MICROCHIMICA ACTA
·
2022
·Vol. 189
·期 11
·1-11
·
IF 6.408
Wang Hongwei,Tang Ruizhi,Jia Shicong,Ma Shujuan,Gong Bolin,Ou Junjie
Enrichment of phosphopeptides before mass spectrometry (MS) analysis is essential due to the limitations of low abundance and poor ionization efficiency in complex biological samples. Immobilized metal affinity chromatography (IMAC), especially titanium ion (Ti 4+ )-IMAC, has become a popular strategy for enrichment of phosphopeptides due to high selectivity and sensitivity. Conventional Ti 4+ -immobilized macroporous adsorption resin (MAR) fabricated by monolayer modification can preferentially capture mono-phosphopeptide over multi-phosphopeptides, which takes on more functions in the regulation of cell behaviors of organism. In this paper, a kind of monodisperse MAR microsphere with functional polymer brush (Ti 4+ -Brush@MAR) was prepared and modified via surface-initiated atom transfer radical polymerization (SI-ATRP). Compared with common Ti 4+ -MAR without polymer brush, Ti 4+ -Brush@MAR exhibited high enrichment specificity not only for mono-phosphopeptides but also for multi-phosphopeptides in β -casein or milk digest samples. As a result, a total of 93 unique phosphopeptides mapped to 18 phosphoproteins were identified from 5 μL milk, and the limit of detection is 10 fmol. It is expected that Ti 4+ -Brush@MAR would be utilized to enrich both multi-phosphopeptides and mono-phosphopeptides in additional biological or food samples. Graphical abstract
研究领域:
生物化学
·
分析化学
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PubMed
高影响因子
OPTICAL MATERIALS
·
2023
·
IF 3.9
Jiao Qu,Binquan Zhao,Qi Zhu
In the field of information encryption, multi-mode luminescent materials that can emit light in response to different forms of excitation are very important. Here, ZnAl 2 O 4 : x Ti 4+ ( x = 0, 0.25%, 0.5%, 0.75%, 1%, 1.25%) and ZnAl 2 O 4 :1%Ti 4+ , y Cr 3+ ( y = 0.1%, 0.2%, 0.3%) optical materials were synthesized by solid-state reaction method. The crystal structure does not significantly change after doping Ti 4+ and Cr 3+ . The single-doped Ti 4+ samples output blue light at 440 nm. Further doping Cr 3+ with y = 0.1%, 0.2% and 0.3%, the emission color shifts from blue to red under 254 nm excitation. There is energy transfer of Ti 4+ →Cr 3+ , and the largest efficiency is 54.0% at y = 0.3%. Because the thermal stabilities of emissions for Ti 4+ and Cr 3+ are quite different, the emissions at 440 nm (Ti 4+ ) and 700 nm (Cr 3+ ) exhibit significantly different responses to temperature. Furthermore, varying the excitation lights from 254 nm to 365 nm also yields different light outputs. Finally, three typical samples were designed for letters “CHN”. The “CHN” logo outputted lights of different colors at different temperatures, and the optical signals varied under different excitations. The colorful emission with different modes can be coded to achieve the application of multi-mode anti-counterfeiting, indicating that they have broad application prospects in this area.
研究领域:
材料科学
·
光学
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高影响因子
APPLIED RADIATION AND ISOTOPES
·
2025
·
IF 1.8
Tao Gao,Xiang Gong,Jiali Liu,Sheng Hu,Wei Yu,Yuhong Liu,Jiwei Liang
A method for regulating the rutile and anatase ratio of TiO 2 products by adding tartaric acid is reported. By this method, TiO 2 with a specific anatase/rutile ratio exhibited excellent selective adsorption performance of 68 Ge and 68 Ga. Experiment shows that Tartaric acid assist synthesized TiO 2 enabled strong 68 Ge adsorption but negligible adsorption of 68 Ga. Meanwhile, the TiO 2 adsorption exhibited significant acid resistance, with minimal Ti 4+ leaching. In addition, the 68 Ga elution efficiency and 68 Ge breakthrough of radioactivity experiments demonstrated that synthesized TiO 2 achieved an initial 68 Ga elution efficiency of 75%, which remained about 65% after 200 elution cycles. Furthermore, over the four-month observation period, the 68 Ge breakthrough of the TiO 2 adsorbent did not exhibit a significant increase, remaining below 1×10 -5 . Generally, the synthesized TiO 2 adsorbent exhibits potential as a 68 Ge/ 68 Ga generator column adsorbent with outstanding acid-resistant, radiation-resistant, efficient 68 Ga elution and low 68 Ge breakthrough for long-term.
研究领域:
材料科学
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核化学
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吸附技术
·
放射性药物
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PubMed
高影响因子
DALTON TRANSACTIONS
·
2017
·Vol. 46
·期 32
·10558-10563
·
IF 4.029
Dejian Yan,Jikai Liu,Zhichao Shang,He'an Luo
Ti-doped α-Fe2O3 nanorods (NRs) with carbon layer coating were fabricated for photoelectrochemical (PEC) water oxidation. The α-Fe2O3 NRs were grown on the surface of a Ti foil substrate by hydrothermal synthesis. Ti4+ was diffused from the Ti substrate and doped into the α-Fe2O3 NRs by sintering at 800 °C. The presence of Fe2+ in the α-Fe2O3 lattice was achieved by annealing the NRs in a lack of oxygen atmosphere, e.g. in argon. The co-existence of Ti4+ and Fe2+ results in significant enhancement of the PEC performance compared with the hematite NRs obtained by annealing in air, showing the absence of Fe2+. The carbon layer coating was conducted by the carbonization of glucose. Impressively, the coated carbon layer can not only facilitate the charge transfer of the photogenerated carriers but also effectively restrain the structural aggregation of the NRs upon high temperature sintering. The carbon layer coated NRs exhibited 1.2 times higher photocurrent density than the uncoated NRs due to the reduced charge recombination and well-distinct NR structures.
研究领域:
材料科学
·
光电化学
·
纳米技术
·
能源材料
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DOI
高影响因子
DALTON TRANSACTIONS
·
2020
·Vol. 49
·期 18
·5957-5964
·
IF 4.174
Weiming Liu,Caiyun Liu,Wenli Wu,Guanyun Zhang,Jian Zhang,Chen-Ho Tung,Yifeng Wang
For the preparation of aqueous Ti-oxo clusters (TOCs) without organic ligands, organic ammonium cations (OACs) are important, but the mechanism is obscure. Here, the Ti4+/SO42− system was chosen as a model to investigate the roles of OACs. Three {Ti4} clusters were isolated from this system with different cationic additives. Structural analysis revealed a structural role of OACs: the hierarchically ordered array of the OACs in the organic layers was responsible for the stability and formation of crystalline precipitates. 17O NMR spectroscopy was used to study the interactions of OACs and SO42− with the Ti-oxo species in water under highly acidic conditions. SO42− enhanced the condensation of Ti4+ by binding to the TOC species. OACs could not enhance the condensation of Ti4+ but could change the solution speciation and especially promote the formation of {Ti18O27} clusters. We speculate that OACs interact with the cationic/neutral TOCs through anionic bridges to change the speciation. Under the synthetic conditions of {Ti4}, {Ti18O27} is the native TOC in solutions but {Ti4} is not.
研究领域:
无机化学
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材料科学
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分析化学
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高影响因子
Magnetochemistry
·
2026
·Vol. 12
·期 4
·46
·
IF 2.8
Zhuoqian Xie,Chenjun Xu,Yunye Shi,Nanxi Lin,Qisheng Tu
Birefringence, arising from the low-symmetry structure in orthorhombic LaFeO3, limits the observation and utilization of magneto-optical effects. In this study, the pure-phase perovskite-typed La1−xCexFe1−xTixO3/SiO2thin films were successfully fabricated via radio-frequency magnetron sputtering, where the co-doping of Ce3+and Ti4+ions effectively induced a structure transition from orthorhombic to a highly symmetric cubic phase, eliminating birefringence effect and thus reducing optical transmission loss. At the same time, the doped Ce3+ions also effectively enhanced the magnetic and magneto-optical effects of the system due to their strong spin coupling effect and superexchange interaction with Fe3+ions. The results show that the cubic-phase La0.5Ce0.5Fe0.5Ti0.5O3/SiO2thin film exhibits excellent magnetic and magneto-optical performance. Their saturation magnetization reaches 180 emu/cm3with an in-plane easy magnetic axis. And their magnetic circular dichroic ellipticity |ψF| reaches 3054 degrees/cm.
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高影响因子
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