JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Qi Peng,Xuehua Weng,Wenqiang Xie,Meihui Ying,Xucong Lin,Yongwei Dai,Qunying Yu,Haibo Pan,Junshao Liu,Min Du
Quick recombination of photogenerated electrons and holes in photocatalytic process remains a huge challenge. And the routine efforts are concentrated on heterojunction , metal decoration and surface defect strategies. PbTiO 3 as a typical perovskite ferroelectrics is with a strong built-in electric field as self-junction caused by internal spontaneous polarization, facilitating the charge separation in the photocatalytic process. Here, under UV irradiation , L-shaped PbTiO 3 with active (1 1 0) facet as a photocatalyst was applied to photo-reduce graphene oxide (GO), where a specific reduced graphene oxide (rGO)/PbTiO 3 composite was synthesized in presence of isopropanol, a hole-trapping agent. According to the linear optical properties , the polarizability of PbTiO 3 is calculated to 1.01 × 10 −23 cm 3 (2.68 times that of P25 (TiO 2 )), inducing the photo-excited charge separation by PbTiO 3 . Based on XPS characterization, a Ti O C chemical bond is identified on the interface between rGO and PbTiO 3 . The response peak current for an electrochemical sensor based on rGO/PbTiO 3 was proportional to the concentration of pyrrole (6.6 × 10 −9 –3.1 × 10 −7 M, R 2 = 0.999), and an extremely low limit reaches to 2.38 × 10 −9 M. In addition, polypyrrole during the pyrrole detection was realized by the multi-cycle oxidation process . And also, the electrochemical detection has been successfully applied for the pyrrole quantification in real samples.
研究领域:
材料科学
·
电化学
·
纳米技术
·
催化
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Catalysis
·
2026
·
IF 13.1
Boyang Zhang,Jiaming Zhang,Kaiwei Liu,Haifeng Wang,Yao Xu,Ke Shi,Zihao Zhang,Jifang Zhang,Guijun Ma
Photoelectrochemical (PEC) water splitting using pair-conjugated dual-electrodes is a promising approach for converting solar energy to hydrogen. However, the development of stable photocathode materials capable of harvesting visible light remains challenging. Herein, rhodium-doped lead titanate (Rh:PbTiO3) was synthesized via a vacuum-condition solid-state reaction. Rh doping converted the n-type PbTiO3 host into a p-type one, accompanied by a transition from an anodic to cathodic PEC response. The switching mechanism was thoroughly investigated using Kelvin probe force microscopy and in situ surface photovoltage spectroscopy. Spontaneously formed Rh on the Rh:PbTiO3 particle was conducive to enhancing surface charge injection efficiency (86% at 0.2 V vs RHE). The onset potential of the optimized 4% Rh:PbTiO3 photocathode reached 1.06 V vs RHE after modification with a layered Pt@Rh cocatalyst. An unbiased parallel cell established by the Rh:PbTiO3 photocathode and Mo:BiVO4 photoanode exhibited stoichiometric and continuous water splitting under simulated sunlight illumination with a Faradaic efficiency of unity. This work not only outlines the dopant-dominated n/p-type transition for semiconducting materials but also shows their priority in achieving stable and visible light-responsive PEC water splitting.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materiomics
·
2026
·
IF 10.6
Weisan Fang,Yanyan Zhang,Yiqing Liu,Hang Ma,Huifen Yu,Chenyu Zhao,Rui Yan,Jie Wu,He Qi,Yu Chen,Jun Chen
Improving the operating characteristics of electronic devices in high temperature environments urgently requires the development of piezoceramics with both high piezoelectric properties and excellent temperature stability. To overcome the intrinsic trade-off between high piezoelectric property and excellent thermal stability in BiScO 3 -PbTiO 3 (BS-PT)-based ceramics, herein, we introduced heterovalent ions (Ca 2+ , Bi 3+ , Nb 5+ ) of different radii into the A/B sites of 0.37BS-0.63PT composition, achieving a significantly enhanced piezoelectric coefficient ( d 33 ∼ 568 pC/N) and good thermal stability (Δ d 33 less than 15% over an ultra-broad temperature range of 20–340 °C). The simultaneously improved piezoelectricity and temperature stability can be attributed to the slight non-ergodic relaxation induced by weak random fields, the coexistence of long-range polarized order and the continuous rotation of local multiphase polarization vectors, as well as the suppression of oxygen vacancy defects. This work, from the perspective of the combination of structure and function, reveals the synergistic effect of complex heterovalent ions on the optimization of electrical properties, providing a new modification approach for regulating the comprehensive performance of high-temperature piezoelectric ceramics in the future.
✓ 已验证
DOI
高影响因子
Microstructures
·
2026
·Vol. 6
·期 2
·N
·
IF 8.5
Kai Li\u003Csup\u003E1,\u003C\u002Fsup\u003E,Qian Wang\u003Csup\u003E2,\u003C\u002Fsup\u003E,Yiqiao Zhou\u003Csup\u003E3\u003C\u002Fsup\u003E,Zehui Yang\u003Csup\u003E1\u003C\u002Fsup\u003E,Zuwen Zeng\u003Csup\u003E1\u003C\u002Fsup\u003E,Yihui An\u003Csup\u003E1\u003C\u002Fsup\u003E,Lang Bian\u003Csup\u003E2\u003C\u002Fsup\u003E,Zhenting Zhao\u003Csup\u003E1\u003C\u002Fsup\u003E,Haijuan Mei\u003Csup\u003E1\u003C\u002Fsup\u003E,Duoduo Zhang\u003Csup\u003E1\u003C\u002Fsup\u003E,Weiping Gong\u003Csup\u003E1\u003C\u002Fsup\u003E,Xudong Qi\u003Csup\u003E4\u003C\u002Fsup\u003E,Limei Zheng\u003Csup\u003E5\u003C\u002Fsup\u003E
To meet the escalating demands for high-performance piezoelectric materials in fields such as modern medical diagnostics, precision manufacturing, etc., we developed a ternary 0.555Pb(Ni1/3Nb2/3)O3-0.145PbZrO3-0.30PbTiO3 (PNN-PZ-PT) piezoelectric ceramic located at the tricritical point of rhombohedral, tetragonal and pseudocubic phases. This ceramic, with coexistence of multiple ferroelectric phases, demonstrates an ultrahigh piezoelectric coefficient d33 of 1190 picocoulombs per newton (pC/N) and a large relative dielectric constant εr of 9900. Analysis of the domain structure reveals irregular maze-like nanodomains with strong local disorder. These nanodomain structures exhibit excellent local piezoelectric response and polarization switching characteristics, thereby enhancing the alignment of polarization vectors during poling and ensuring the high stability after being poled. The tricritical point composition with disordered nanodomains can significantly enhance the contribution of polarization to macroscopic piezoelectric properties, offering a promising approach for developing ceramics with superior piezoelectricity.
✓ 已验证
产品关联
DOI
高影响因子
APL Materials
·
2020
·Vol. 8
·期 6
·
IF 3.819
Li Xiu,Chen Chen,Zhang Faqiang,Huang Xintang,Yi Zhiguo
Photostrictive effect that has been discovered for over half a century is getting renewed interest in recent years in view of the great potentials for optomechanical applications. Ferroelectric materials represented by lead lanthanum zirconated titanate have been widely studied in this field because of their relatively large photostriction and fast photoresponse, but their wide bandgaps with limit response to visible light hinder further practical application. Here, visible-light-driven photostrictions of the order of 10 −3 are discovered in Bi(Ni 2/3 Nb 1/3 )O 3 –PbTiO 3 (BNNPT) ferroelectric solid solutions. Three BNNPT compositions with different phase structures, exhibiting notably different piezoelectric and photovoltaic properties, are selected to conduct the photostriction investigation, and their analogous photostrictive behaviors contradict with previous acknowledgment that the photostriction of ferroelectrics originates from the photovoltage-induced inverse piezoresponse. The nonuniform shifts of the XRD diffraction peaks under external laser illumination and the redshifts of the laser power dependent Raman modes disclose that the photostriction is mainly attributed to the light-induced distortion of BO 6 octahedra. This study sheds insight into the mechanism of the photostriction of ferroelectrics.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Querui Hu,Yiping Wang,Kang Yan,Lang Chen,Guoliang Yuan,Jing Chen,Ying Yang
The structure and electric properties of 5 mol. % LiNbO 3 doped x BiScO 3 –(95- x )PbTiO 3 (5LN– x BS–(95- x )PT, 26 ≤ x ≤ 41 mol. %) ceramics have been systematically investigated. The composition-, temperature- and electric-field-dependent phase transitions were established carefully by the temperature-dependent dielectric measurements. The results verified that the 5LN– x BS–(95- x )PT system transformed to nonergodic relaxors (NR) phase gradually from normal ferroelectrics (FE) phase with the addition of BiScO 3 contents. With the increase of temperature, ergodic relaxors (ER) phase was observed before the phase transition from FE and/or NR to paraelectrics (PE) phase. By comparing the dielectric responses of the ceramics before and after polarization, it was confirmed that the electric field could induce a phase transition from NR to FE while the ceramics were polarized, which was attributed to the growth of the dipole clusters and the permutation of the macroscopical ferroelectric order under the external electric field. The phase diagram of 5LN– x BS–(95- x )PT system was then built and the morphotropic phase boundary (MPB) between tetragonal and rhombohedral phase of the system was identified at 34 ≤ x ≤ 36. The optimal properties were found at the composition of 5LN–34BS–61PT ceramic with piezoelectric coefficient d 33 value of 514 pC/N, planar electromechanical coupling factor k p of 0.47, relative dielectric constant ε r of 2511, and remnant polarization P r of 37.4 μC/cm 2 . The displayed piezoelectric properties could provide alternative compositions with less lead contents comparing with the Pb(Zr, Ti)O 3 based piezoceramics.
研究领域:
材料科学
·
陶瓷材料
·
电介质物理
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 15
·118583
·
IF 6.3
Qinghu Guo,Ting Wang,Jinglong Fan,Yimang Zhao,Xiangyu Meng,Xiaoyi Gao,Zhonghua Yao,Weiping Gong,Hanxing Liu,Hua Hao,Shujun Zhang
Electrostrictive ceramics are crucial for high-precision actuators due to their low hysteresis, fast response, and low heat dissipation. In this work, Nd 3+ was strategically employed to optimize the electrostrictive properties of x Nd-doped Pb(Ni 1/3 Nb 2/3 )O 3 -PbZrO 3 -PbTiO 3 (PNN-PZ-PT) ceramics. A phase transition from the morphotropic phase boundary to a cubic structure, accompanied by enhanced dielectric relaxor behavior was observed with increasing Nd content, which can be attributed to the disruption of long-range ordered ferroelectric domains caused by aliovalent Nd doping-induced local structural heterogeneities—thereby reducing strain hysteresis and enabling improved electrostrictive response. Notably, outstanding electrostrictive strain of 0.105% and high electrostrictive coefficient M 33 = 10.5 × 10 −16 m 2 /V 2 were obtained under a 10 kV/cm for the 3%Nd-doped PNN-PZ-PT ceramic, superior to other relaxor ferroelectric ceramics. Additionally, this composition exhibits outstanding cycling reliability with only 5% strain degradation over 10 6 electrical cycles, positioning it as a promising candidate for precision micro-actuators applications requiring ultra-stable, high-efficiency electromechanical responses.
✓ 已验证
DOI
高影响因子
Nano-Micro Letters
·
2019
·Vol. 11
·期 1
·1-16
·
IF 9.043
Xu Tingting,Liu Xuan,Wang Shulan,Li Li
PbTiO 3 /TiO 2 @carbon (PTC) composites with trimodal pore distribution were synthesized by a dual-template method. Localized quasi-1D nanoneedle morphology was formed that can promote charge separation.
The as-prepared PTC nanocomposites with optimal mass ratio exhibited excellent photocatalytic and photoelectrochemical performances.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 21
·18036-18044
·
IF 2.324
Hu Querui,Wang Yiping,Wu Lei,Yin Jiang,Chen Lang,Yuan Guoliang,Yang Ying
Piezoelectric ceramics x LiNbO 3 – y BiScO 3 –(1− x − y )PbTiO 3 (LN–BS–PT, 0.00 ≤ x ≤ 0.10, 0.30 ≤ y ≤ 0.36) were synthesized and their phase diagram and morphotropic phase boundary between rhombohedral and tetragonal phases have been confirmed. The optimal properties were found at the composition of 0.03LN–0.36BS–0.61PT with piezoelectric coefficient d 33 * value of 702 pm/V, d 33 of 551 pC/N, planar electromechanical coupling factor k p of 0.51, remnant polarization P r of 46.5 µC/cm 2 , Curie temperature T c of 337 °C, and a large strain of 0.351% at an electric field of 50 kV/cm and frequency of 2 Hz with a low strain hysteresis of 5.9%. The Curie temperature of the ternary system presents a linear relationship with LiNbO 3 and BiScO 3 contents. The optimization of these electric properties was probably ascribed to the enhancement in domain walls and the improving mobility of domain switching due to LiNbO 3 doping.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9
Heyang Dou,Yajun Li,Dayang Wang,Qian Zhu,Dewen Hou,Jian Qi
In the field of photocatalytic conversion, the efficiency of charge separation between photogenerated electrons and holes is a critical determinant of catalytic performance. However, the development of highly efficient photocatalysts and the precise modulation of their electronic orbitals remain significant challenges. In this study, PbTiO 3 powder was first successfully synthesized via the high-temperature solid-state method. Subsequently, surface oxygen vacancies were introduced through a hydrothermal acid-induced treatment. Experimental results demonstrate that the PbTiO 3 sample with the highest concentration of oxygen vacancies exhibits significantly enhanced photocatalytic performance, achieving a 19-fold increase in activity compared to pristine PbTiO 3 . The CO evolution rate reaches 16.26 μmol·g −1 ·h −1 , with a selectivity of 92.71%. A comprehensive investigation into the underlying mechanism reveals three key contributing factors. First, the abundant formation of oxygen vacancies provides a high density of active sites for CO 2 adsorption and activation, thereby promoting the catalytic reaction; Second, the reduced band gap width facilitates the generation of photogenerated electron-hole pairs by lowering the energy threshold for electronic transitions, thereby improving charge carrier generation and electron transport efficiency. Third, in PbTiO 3 , electrons are transferred from titanium to oxygen atoms, accompanied by electron filling from the t 2g to the e g orbitals of oxygen. This results in increased electron density in the e g orbitals, which enhances the capacity of oxygen vacancies to capture electrons. Therefore, the modulation of the electronic state significantly enhances the separation efficiency of photogenerated electron-hole pairs. Based on the aforementioned optimization strategies, this study offers novel insights and methodologies for the design of efficient photocatalytic systems with orbital regulation capabilities, and holds promise for advancing the broader application and development of photocatalytic technologies in areas such as energy conversion and environmental remediation.
✓ 已验证
产品关联
DOI
高影响因子
Crystals
·
2024
·Vol. 14
·期 1
·91
·
IF 2.4
Fan Zhang,Hua Hao,Minghe Cao,Zhonghua Yao,Shuai Fu,Hanxing Liu
Piezoelectric ceramics with excellent piezoelectric properties and a high Curie temperature are important for numerous electromechanical devices in a broad range of temperature environments. In this work, the relaxor ferroelectric Pb(Yb1/2Nb1/2)O3end member was selected to be introduced into a BiScO3-PbTiO3high-temperature piezoelectric ceramic to reduce the dielectric loss and improve the piezoelectric properties while slightly reducing the Curie temperature. The phase structure and dielectric, ferroelectric and piezoelectric properties of 0.025Pb(Yb1/2Nb1/2)O3-(0.975−x)BiScO3-xPbTiO3(0.60 ≤x≤ 0.63) ceramics were systematically analyzed, and the best electrical properties were observed in the morphotropic phase boundary regionx= 0.61 withd33= 370 pC/N,kp= 44%,Pr= 33.9 μC/cm2. Importantly, no significant depolarization was observed in thex= 0.61 ceramic from room temperature to 290 °C, demonstrating its good thermal stability and potential applications in a wide range of temperature environments.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Pengbin Wang,Qinghu Guo,Fei Li,Fangquan Xia,Hua Hao,Huajun Sun,Hanxing Liu,Shujun Zhang
The development of ferroelectric ceramics with both large piezoelectric responses and broad service temperature range is still a key challenge for practical applications due to the so-called d 33 - T C trade-off. Here we report the strategy to utilize the synergistic contribution of morphotropic phase boundary and enhanced local structural heterogeneity, in which an excellent piezoelectric coefficient d 33 of 680 pC/N and a high Curie temperature of 330 ℃ are simultaneously achieved in Sm modified 0.25PIN-0.325PZ-0.425PT ceramics. The underlying mechanism responsible for the high dielectric and piezoelectric properties is studied based on cryogenic dielectric measurement and Rayleigh analysis. Of particular interest is that, a high field-induced strain of 0.19% is achieved in 0.25PIN-0.32PZ-0.43PT at electric field of 20 kV/cm, corresponding to a piezoelectric d 33 * of 945 pm/V, showing an excellent temperature stability with minimal variation of 7% up to 310 °C. This work demonstrates the introduction of high temperature end members and rare earth doping are conducive to ferroelectric solid solutions with desired broad usage temperature range and superior piezoelectric properties , which will greatly benefit high temperature actuator applications.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）