Analytical Methods
·
2026
·
IF 3
Nan Zhang,Zhi Wang,Wanqi Qin,Yan Zhang,Si-Jia Ge,Zhen Yu,Xuejing Liu,Qin Wei
The early diagnosis and postoperative monitoring of ovarian cancer rely significantly on the sensitive detection of antigen CA12-5. In this work, a photoelectrochemical immunosensor was developed for the detection of CA12-5, utilizing a CdS/SrTiO3 heterojunction as the photoactive matrix and NiCo2O4 as a quencher probe. The Z-type heterojunction promotes the separation of photogenerated electrons and holes, suppresses the recombination of charge carriers, and thereby significantly enhances the initial photocurrent response. Furthermore, the introduced NiCo2O4 quencher generates steric hindrance and competes effectively with the photosensitive material for light absorption, leading to a reduction in the photocurrent signal. This quenching effect greatly enhances the detection sensitivity for CA12-5. The fabricated immunosensor exhibited excellent selectivity and stability under optimal conditions, achieving a wide linear detection range from 5 pg mL−1 to 50 ng mL−1 and a low detection limit of 1.3 pg mL−1.
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高影响因子
MATERIALS RESEARCH BULLETIN
·
2026
·
IF 5.8
Lei Wang,Zhengyu Yang,Yajun Xu,Yilin Wu,Jinsheng Li,Xiaoguo Bi,Xiqiu Wang,Xudong Sun,Weiping Lu
First systematic study of dielectric anisotropy in Nb:SrTiO 3 single crystals across seven orientations. • [311] shows the highest permittivity (2.35 ×10 5 ) but poor stability; [100] shows the lowest loss (<0.056) and excellent stability. • [310] orientation best balance defect concentration, electron binding, and dynamic response for orientation engineering. High-quality Nb-doped SrTiO 3 single crystals were successfully grown via the Verneuil method, and their dielectric properties were systematically investigated with respect to crystallographic orientation. The [311] orientation achieves the highest permittivity of 2.35 × 10 5 , accompanied by high Ti 3 ⁺ and oxygen vacancy concentrations, but exhibits poor frequency and temperature stability. In contrast, the [100] orientation shows the lowest permittivity of 6.0 × 10 4 , the lowest dielectric loss (<0.056), and excellent stability, attributed to its low defect concentrations and strong electron binding capability. Remarkably, the [310] orientation achieves an optimal balance, delivering a permittivity of 1.63 × 10 5 , a capacitance temperature variation of less than 8.5% from room temperature to 300 °C, and a high-frequency loss below 0.085, exhibiting outstanding thermal stability in the tested temperature range for capacitor applications. These findings provide direct guidance for designing textured polycrystalline ceramics and demonstrate that orientation engineering is a viable strategy for developing high-performance colossal dielectric materials. Download: Download high-res image (160KB) Download: Download full-size image
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CERAMICS INTERNATIONAL
·
2026
·
IF 6
Yutong Zhang,Shuangdou Wu,Lingling Song,Junqin Mao
Developing bioactive piezoelectric ceramics that simultaneously provide electromechanical stimulation and osteogenic regulation remains a major challenge in bone repair. Here, Mn-doped bioactive glass/SrTiO 3 (BG-STO) composite ceramics were fabricated via solid-state sintering to establish a defect-engineered piezoelectric platform with enhanced bioactivity. Structural analyses confirmed SrTiO 3 as the primary phase, while BG incorporation induced grain refinement, lattice distortion, and secondary phase formation. XPS results revealed increased oxygen vacancies and Ti 3+ content, indicating defect-dipole-mediated polarization. The piezoelectric coefficient reached a maximum of ∼1.4 pC/N at 20 wt% BG, accompanied by stable electrical output, reflecting a balance between polarization enhancement and conductivity screening. Biological assays demonstrated excellent cytocompatibility, hemocompatibility, and sustained promotion of stem cell proliferation driven by bioactive ion release. These findings highlight BG-STO ceramics as promising candidates for synergistic electromechanical-biochemical modulation in bone regeneration.
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Exploration
·
2026
·
IF 30.4
Weiwei Wang,Chun Lu,Xiaoxiao Liu,Wenlong Yang,Jie Zhou,Chenyao Hu,Xin Li,Guangze Nie
Sonopiezo-mediated heterogeneous catalysis is a promising technology for efficient removal of organic pollutants from wastewater. Nevertheless, it is challenging in real water matrix with coexisting ions due to the rather-limited selectivity of reactive oxygen species if any. Herein, a sonopiezo-triggered singlet oxygen evolution system for selective removal of tetracycline hydrochloride (TCH) was rationally designed by SrTiO 3 -TiO 2 heterojunction with a TiO 2 -terminated SrTiO 3 S-scheme interfacial structure. SrTiO 3 -TiO 2 heterojunction exhibits a dramatically expanded piezoelectric constant ( d 33 ), which produces a synergistic effect on improving the separation and transfer efficiency of charge carrier for efficient TCH degradation. Moreover, SrTiO 3 -TiO 2 heterojunction presents a high sonopiezo-current, which attractively indicates that SrTiO 3 -TiO 2 heterojunction has a potential capacity of charge separation under sonopiezo initiation. Remarkably, the mechanism was identified as the continuous generating of singlet oxygen ( 1 O 2 ), in which the sonopiezo-generated electrons trigger the formation of superoxide anion radical (•O 2 − ) and its subsequent transformation to generate 1 O 2 by expending more sonopiezo-generated holes. These findings provided new insights towards developing nonradical system for effective and selective oxidation of electron-rich pollutants via sonopiezo-catalytic process.
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Materials Today Communications
·
2025
·
IF 4.5
Wenping Cao,Jiabin Tu,Nuo Xu,Zhuang Wang,Xinyan Xiong,Qianru Lin,Jiazhi Wang,Nan Zhang,Jie Sheng,W.L. Li
Optimizing energy storage performance often involves increasing the discrepancy between maximum polarization and remanent polarization ( P max - P r ) and breakdown strength ( E b ). Here, aging treatment in acceptor doped NBT-based film is taken for increasing both E b and P max - P r by constructing ordered defect dipoles. Enhanced P max - P r value of 80.6 μC/cm 2 and high E b of 2630 kV/cm are obtained in the aged (Na 0.5 Bi 0.5 ) 0.55 Sr 0.45 Ti 0.99 Mn 0.01 O 3 thin film, which can be attributed to the reversible domain switching caused by ordered defect dipoles and low oxygen vacancies concentration. Accordingly, an energy density of 72.4 J/cm 3 with an efficiency of 76.8 % was achieved simultaneously in the aged film, which are approximately raised by 80.6 % and 45.2 %, respectively, compared with the unaged state. The stable energy storage performances are achieved within the scope of operating temperatures (20–200 ◦ C) and frequencies (0.2–10 kHz). These results provide a new route to take usages of aging process for optimizing the energy performance of NBT-based thin films.
研究领域:
材料科学
·
凝聚态物理
·
应用物理
·
纳米技术
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高影响因子
ChemCatChem
·
2026
·Vol. 18
·期 9
·e70761
·
IF 4.1
Mengdie Cai,Yulu Xu,Yao Lu,Qi Jin,Yongshuai Chen,Jia-qi Bai,Fang Chen,Zhimin Song,Song Sun
Developing efficient visible-light-driven photocatalysts for overall water splitting remains a significant challenge. Herein, Sn/Cr co-doped SrTiO 3 (SCSTO) was synthesized via a flux-assisted solid-state reaction, with Sn substituting Sr sites and Cr replacing Ti sites in the perovskite lattice. Sn/Cr synergistic co-doping extends optical absorption into the visible region, narrows the bandgap to 3.04 eV, suppresses Ti3+ defects and oxygen vacancies, and promotes charge separation and migration. Benefiting from the rational band structure and defect engineering, under visible-light irradiation (λ > 380 nm), the optimal SCSTO exhibits a hydrogen evolution rate of 15.4 µmol·h − 1 and oxygen evolution rate of 7.34 µmol·h −1 , with outstanding cycling stability. DFT calculations confirm that Cr 3d mid-gap states below the Ti 3d conduction band enhance visible-light response and charge transfer. This work provides a universal and feasible co-doping strategy for designing high-performance perovskite oxide photocatalysts toward efficient solar fuel production, which is instructive for the development of advanced visible-light-driven photocatalytic systems. Graphical A synergistic Sn/Cr dual-site co-doping strategy was developed for SrTiO 3 to enable efficient visible-light-driven overall water splitting.
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E-POLYMERS
·
2021
·Vol. 21
·期 1
·272-278
·
IF 2.025
Ruolin Han,Yuping Liu,Jinchao Shi,Guang-Xin Chen,Qifang Li
In this work, strontium titanate (STO) was coated on the surface of carbon nanotubes (MWCNTs) through a sol–gel method to form a core–shell structure hybrid powder (STO@MWCNTs). This powder was then added to polydimethylsiloxane to prepare a flexible high-K composite. As coating, STO effectively prevents the overlap and agglomeration of MWCNTs, thereby passivating the percolation threshold of the composite. STO increases the dielectric properties of the composite as a high dielectric ceramic. Under a low filler loading amount of 11 wt%, the dielectric constant and dielectric loss of the composite are 53 and 0.1, respectively. In addition, the composite can still maintain superior breakdown strength and mechanical properties, given the relatively low filler concentration. The enhanced dielectric properties, breakdown strength, and tensile strength make the composite suitable for application as dielectric material in flexible and stretchable energy storage equipment.
研究领域:
材料科学
·
复合材料
·
纳米技术
·
电气工程
·
能量存储
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Journal of Materials Chemistry C
·
2022
·Vol. 11
·期 1
·127-133
·
IF 8.067
Yong Zhang,Hui Liu,Shuai Liu,Qian Gong,Yushen Liu,Dan Tian,Lixing Kang
The p-CuI/n-SrTiO3 heterojunction photodetector (PD) is constructed based on a SrTiO3 wafer, which is covered with a CuI film via the vacuum thermal evaporation method. Compared with the SrTiO3 (STO) device, the CuI/STO PD exhibits significantly enhanced photocurrent. Furthermore, the CuI/STO PD presents excellent self-powered characteristics, including high on/off ratio (7 × 103) and fast response speed (0.6/3.3 ms) under 400 nm light irradiation. In particular, the CuI/STO PD shows a great narrowband photoresponse (FWHM ∼ 27 nm) at zero bias because of the proper and compatible bandgap of CuI and STO. More importantly, the CuI/STO device demonstrates a transparency of 70% over the entire visible light region and blocks 99.9% UV light (200–385 nm). This work provides an effective strategy to realize power-free, filter-free and UV-free PDs for many special applications.
研究领域:
光电子学
·
光电探测器
·
材料科学
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半导体器件
·
薄膜技术
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高影响因子
CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Yang Gao,Hanxing Liu,Zhonghua Yao,Hua Hao,Zhiyong Yu,Minghe Cao
xBa 0.7 Sr 0.3 TiO 3 -SrTiO 3 (BST-ST) multilayer ceramics with different BST layers (x=1, 3, 5) were designed and fabricated by lamination of Ba 0.7 Sr 0.3 TiO 3 (BST) and SrTiO 3 (ST) tapes. Dielectric and energy storage properties of the multilayer ceramics were investigated. BST-ST multilayer ceramics exhibited enhanced temperature- and frequency-stability of dielectric properties , accompanying high permittivity (~2000) and low dielectric loss (<0.005) at room temperature. P-E loops revealed that BST-ST multilayer ceramics displayed low remnant polarization and favorable maximum polarization. The optimal energy storage performance was obtained in the composition of x=5 with dielectric breakdown strength of 220 kV/cm and energy storage density of 2.3 J/cm 3 . These results indicate that BST-ST multilayer ceramics can be a favorable candidate for dielectric capacitor applications.
研究领域:
材料科学
·
电子工程
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Xiaoyun Ye,Hangyu Zhong,Yumei Zhang,Yuping Wu,Shuguang Cai,Song Chen,Lian Ma,Qianting Wang
In this work, a ternary Ti 3 C 2 /TiO 2 /SrTiO 3 composite with heterogeneous network structure was prepared by two-step in situ hydrothermal synthesis method, which mainly involved the growth of TiO 2 nanosheets and fibrous SrTiO 3 sequentially on the Ti 3 C 2 substrate using the Ti source inherent in Ti 3 C 2 as the reaction site. The Ti 3 C 2 /TiO 2 /SrTiO 3 heterojunction exhibited enhanced photocatalytic hydrogen evolution activity. When the doping amount of SrTiO 3 was 5 wt%, the hydrogen evolution rate of 5MTS under full solar irradiation reached 14322.6 μmol·g −1 ·h −1 , which was 10.6 times the rate of the Ti 3 C 2 /TiO 2 composite without modified SrTiO 3 . Meanwhile, the 5MTS composites showed good stability in the photocatalytic hydrogen evolution cycle test. The enhanced activity and recyclability are mainly attributed to the strong light absorption ability, fast separation of photogenerated electron-hole pairs, and abundant catalytic active sites. In addition, the synthesis method utilizing an intrinsic Ti source also enhances the interfacial contact between Ti 3 C 2 , TiO 2 , and SrTiO 3 . This study provides an effective reference for the construction of perovskite-based or Ti 3 C 2 co-catalyzed heterostructures and their application for the conversion of solar power to hydrogen energy .
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 44
·2306466
·
IF 19
Li Wang,Yukun Li,Yinyin Ai,Erchuang Fan,Fei Zhang,Wentao Zhang,Guosheng Shao,Peng Zhang
Photocatalytic conversion of H 2 O and CO 2 into solar fuels is considered to be a green and renewable technology while photocatalytic performance is hampered by the severe recombination of photogenerated electron–hole pairs. Drawing inspiration from the concepts of the electrons transfer layer (ETL) and the holes transfer layer (HTL) in perovskite solar cells, a multicomponent photocatalyst SrTiO 3 /NiO/NiS that incorporates p–n heterojunction and Schottky junction is constructed for converting solar energy into easily storable solar fuels. The NiS and NiO play the roles analogy to the ETL and the HTL which accomplishes the reverse migration of electrons and holes, accordingly, SrTiO 3 /NiO/NiS exhibits a noticeable enhancement in photocatalytic performance. However, the lack of direct observation of charge transfer pathways in complex multicomponent photocatalysts makes it challenging to thoroughly investigate their catalytic mechanisms. Herein, the in situ irradiation X-ray photoelectron spectroscopy (ISI–XPS) is employed to track photogenerated charges migration pathways between microscopic heterogeneous interfaces, thereby providing a comprehensive elucidation of the catalytic mechanism and heterojunction formation process by integrating the photoelectrochemical tests. This study not only serves as compelling evidence for the capability of ISI–XPS in directly and accurately tracking charge transfer pathways but also as an intriguing highlight within the catalyst design strategy.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jiajun Ruan,Tao Zhong,Yuxi Guo
The key elements that influence the properties and capabilities of particulate photocatalysts are their crystallinity , size, and surface active sites. However, simultaneously controlling these three variables remains a challenge. In this study, we present the first exploration into the use of a simple ethylenediaminetetraacetate (EDTA) etching technique to decrease the particle size and increase the surface active sites of photocatalysts while preserving their high crystallinity. By employing SrTiO 3 as a model photocatalyst, we were able to create an ordered step nanostructure on the surface of sintered SrTiO 3 . As a result of the EDTA treatment, the particle size was reduced while the crystallinity was maintained. The separation of photogenerated electrons and holes is enhanced by the combination of reduced particle size and high crystallinity. To enhance chemical reaction activities, the organized surface nano-step structures serve as high-activity sites. As a result, when subjected to simulated light irradiation , the EDTA-treated SrTiO 3 samples demonstrate improved photocatalytic performance for water splitting into H 2 and O 2 in a stoichiometric amount that is 3.8 times greater than that of untreated SrTiO 3 . Since EDTA interacts with most metals, this simple EDTA etching technique has the potential to be further developed to modify additional photocatalysts with exceptional performance for a variety of applications.
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