Materials
·
2025
·Vol. 18
·期 3
·512
·
IF 3.2
Zechi Ma,Zixuan Yuan,Zhonghua Yao,Jiangxue Chen,Hua Hao,Minghe Cao,Hanxing Liu
Piezoelectric materials (PZTs) enjoy extensive applications in the field of electromechanical sensors due to their sensitive response to external electric fields. The limited piezoelectric response for single-layer piezoceramic pellets drives the use of multilayered technology to increase the electric displacement of a single piezo device. As is well known, Ag is commonly used as a metal for electrodes in devices based on traditional PZTs, which always densify at a high temperature above 1100 °C, resulting in Ag migration. Here, a high-performance samarium-ion-doped Sm0.01Pb0.99(Zr0.54Ti0.46)O3ceramic was selected as parent materials to develop a new Ag-cofired ceramic matrix with a sintering temperature of 920 °C by glass flux. The ceramic composition with 2.0 wt% glass addition exhibits the excellent performance of piezoelectricd33~492 pC/N, planar electromechanical coupling coefficientkp~50.1%, mechanical quality factorQm~68.71, and Curie temperatureTc~356 °C, respectively. The cyclic stability ofd33was measured below 6.6% at 30 kV/cm, which indicates that the piezoceramic has good temperature stability and fatigue resistance. Therefore, this study provides a novel high-performance piezoelectric system to meet the cofired requirement for multilayered piezoelectric devices.
研究领域:
材料科学
·
电子工程
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PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Xiaoqian Tan,Yiyue Luo,Zehao Yu,Menghan Li,Chao Wang,Tingxin Ma,Wei Liu,Fuyi Jiang,Litao Kang
A K⁺/Zn²⁺ dual-ion electrolyte is proposed to suppress dissolution and stabilize KZnHCF counter electrodes. • The electrolyte ensures high electrochemical activity for both the PB working electrode and the KZnHCF counter electrode. • The optimized PB-KZnHCF device achieves a large optical modulation, fast switching speed, and excellent cycling stability. KZnHCF (K 2 Zn 3 [Fe(CN) 6 ] 2 ), a typical Prussian blue analog (PBAs), exhibits high transparency regardless of the redox states, making it an ideal transparent counter electrode material for electrochromic devices. However, its cycling durability is seriously limited by stability issues deriving from material dissolution. In this work, we propose a K + /Zn 2+ dual-cation electrolyte to enhance the cycling durability of KZnHCF by changing the Zn 2+ dissolution equilibrium between the electrolyte and the electrode. This electrolyte formulation is also compatible with the Prussian Blue (PB) electrochromic electrodes, enabling excellent electrochromic performance. Based on these merits, a high-performance electrochromic device is constructed by pairing the PB working electrode with the KZnHCF counter electrode in the K + /Zn 2+ electrolyte. This device demonstrates a desirable optical modulation of 52.7% at 633 nm with a coloration and bleaching response time of 5 and 14 s, respectively. After 1000 cycles, 77.8% of the initial optical modulation retains, indicating a decent cycling stability. This work underscores the promise of electrolyte engineering in addressing stability challenges of electrodes, offering a viable pathway to improve the performance of Prussian blue (PB)-based electrochromic devices. Download: Download high-res image (107KB) Download: Download full-size image
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Scientific Reports
·
2026
·
IF 4.9
Sikandar Anila,Zhao Jing,Ahmad Shakeel,Chu Gang,Pan Bo,Chang Zhaofeng,Liu Yang,Wu Danping,Rashid Audil
Biochar (BC) has been widely used for the lead (Pb(II)) immobilization in soil remediation. However, the mechanisms of dissolution-driven removal of Pb(II) by BC are still poorly understood. Herein, Pb(II) removal was investigated by differentiating BC- and dissolved organic carbon (DOC)-systems. As per the kinetics and isotherms, Pb(II) removal ranged from 31.11% to 80.92% in BC-system. This removal process was significantly influenced by dissolution-driven precipitation which contributed from 23.42% to 84.03% in DOC-system. During Pb(II) removal, an obvious reduction was observed in the released inorganic anions including carbonate (CO 3 2− ), sulfate (SO 4 2− ), and phosphate (PO 4 3− ). The CO 3 2− was a predominant contributor to facilitate Pb(II) precipitation. X-ray diffraction further confirmed the formation of cerussite (PbCO 3 ) and anglesite (PbSO 4 ) on BC surface after Pb(II) removal. Moreover, the decreased fluorescence responses of humic-like and fulvic-like substances were detected in DOC-system with the addition of Pb(II). At the same anion concentration, the enhanced Pb(II) amount was removed with increasing DOC concentration from 1 mg·L − 1 to 5 mg·L − 1 . These results indicated that released DOC exerted a significant contribution on Pb(II) precipitation due to its coagulation effect. This research provides mechanistic insights into the contributions of adsorption and dissolution-driven precipitation in overall Pb(II) removal through BC application.
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Journal of Energy Storage
·
2025
·
IF 9.8
Yuan Wang,Qinfeng Zheng,Yuepeng Pang,Yixiao Zhang,Tao Yuan,Shiyou Zheng
Prussian blue and its analogues (PBA) are promising cathode materials for economical large-scale sodium-ion batteries (SIBs). Manganese-based PBA, abbreviated as “PW”, offers advantages such as high voltage, high capacity, and good cost-effectiveness but faces challenges with manganese dissolution and structural distortion during cycling. In contrast, iron-based PBA, abbreviated as “PB”, maintains more stable structural integrity but exhibits relatively lower capacity. In this study, we introduce an ion-exchange technique to create core-shell structural cathode materials with PW as the main active ingredient and PB as the protective shell (PW@PB). This approach achieves more than doubled capacity retention after 500 cycles compared to naked PW. Furthermore, PW@PB demonstrates notable rate capability enhancements, retaining 80 % of its capacity at 0.1C when subjected to a high rate of 10C, proving its potential for use in fast-charging SIBs. The improved performance is primarily attributed to the reduced lattice and bound water in the structure of PW@PB. Additionally, the stable outer layer of PB inhibits the leaching of Mn and Fe, minimizing lattice distortion during the charge-discharge process.
研究领域:
材料科学
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电化学
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高影响因子
Journal of Materiomics
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2025
·
IF 9.6
Qing Li,Wei Deng,Tian-Ci Ma,Changhao Zhao,Mupeng Zheng,Lei Zhao,Qiong Wu,Chaofeng Wu,Fang-Zhou Yao,Wen Gong,Dragan Damjanovic,Mao-Hua Zhang
Complex lead-based perovskites with the general formula Pb(B x ’B 1- x ’’)O 3 , represent an important class of antiferroelectrics beyond the prototypical PbZrO 3 and NaNbO 3 . Depending on the combination of B-site species and the degree of cationic ordering, these materials exhibit a wide range of ferroic behaviors, spanning from antiferroelectric to (relaxor) ferroelectric responses. In this study, we investigate (Pb 1- x Ba x )(Yb 1/2 Nb 1/2 )O 3 polycrystals synthesized via a two-step processing route. Despite displaying antiferroelectric, ferroelectric, or nearly linear dielectric behavior at room temperature, all compositions exhibit double polarization hysteresis loops in proximity to a lower-temperature dielectric anomaly. This dielectric anomaly originates from the competition between antipolar and nanoscale polar regions, and shifts towards lower temperature with increasing Ba content, reflecting the suppression of long-range antiferroelectric ordering. Notably, a composition-invariant temperature scale, T *, is identified and associated with the onset of static correlations among nanoscale polar entities, consistent with behavior reported in other complex Pb-based relaxor ferroelectrics. Superlattice reflections arising from antiparallel Pb 2+ displacements persist above T *, suggesting an intricate cation-ordering landscape requiring further investigation. These findings underscore the coexistence and competition of polar and antipolar instabilities in complex lead-based perovskites, and their pronounced sensitivity to chemical substitution, thermal fluctuations, and external electric fields.
研究领域:
凝聚态物理
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材料科学
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铁性材料
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介电与绝缘体
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高影响因子
RARE METALS
·
2025
·Vol. 44
·期 5
·3339-3350
·
IF 11
Wang Wen-Ying,Zhu Jun-Liang,Bo Lin,Zhou Wen-Ying,Liu Xing-Shuo,Li Chang-Cun,Zhang Zheng,Zhao De-Gang
The rock-salt cubic SnSe compound with multiple valleys and inherent low thermal conductivity is considered to be a promising thermoelectric compound. In this study, heterogeneous Pb atoms were strategically introduced into the lattice of cubic SnSe matrix, synergistically adjusting the thermoelectric transport properties of samples by optimizing hole carrier concentration ( n ) and suppressing thermal conductivity ( κ tot ). When the doping content reached 0.08 mol, the peak power factor (PF) at 300 K increased to 20.00 μW·cm –1 ·K –2 . The growing internal microstrain induced by the differences in atomic size strengthened the phonon scattering and effectively reduced the lattice thermal conductivity ( κ L ). With further decoupling of the electrical and thermal transport properties, a peak thermoelectric figure of merit ( ZT ) of 0.82 and an average ZT of 0.42 (300–750 K) were achieved in the samples doped with 0.10 mol Pb. These findings highlight the effectiveness of the selected dopants and demonstrate their synergy in improving the performance of thermoelectric materials. Graphical
研究领域:
材料科学
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凝聚态物理
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能源材料
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热电转换
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半导体物理
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高影响因子
ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Haiyan Wu,Liubing Ling,Ting Wang,Kun Dong,Yufeng Xu,Guo Yu,Yanwu Wang,Dunqiu Wang
Persistent Pb(II) ions in soils and aquatic systems diminish soil fertility, degrade water quality, and destabilise ecosystems. Hydroxyapatite nanowires (HAPNWs) are promising adsorbents owing to their chemical stability, biocompatibility, and strong affinity for heavy metals. This study evaluates HAPNWs hydrothermally synthesised between 0°C and 55°C, correlates temperature-induced structural variations with adsorption performance, and elucidates the stepwise Pb(II) uptake pathway. Nanowires synthesised at 35°C displayed the highest aspect ratio and achieved the greatest equilibrium adsorption capacity. The sorption kinetics followed a pseudo-second-order model, whereas the equilibrium data were best described by the Freundlich isotherm. Multi-technique characterisation revealed a two-stage uptake mechanism. Stage I, outer-sphere complexation, involves rapid binding of Pb 2+ to surface -PO 4 and -OH groups via electrostatic interactions without disturbing the apatite lattice. Stage II, near-surface ion exchange accompanied by incipient dissolution-reprecipitation, occurs under continued loading: surface Ca 2+ is partially replaced by Pb 2+ , and Pb 10 (PO 4 ) 6 (OH) 2 nuclei start to form on the HAP surface, progressively reducing active-site availability. Competitive sorption tests demonstrated a pronounced Pb 2+ preference. In equimolar quinary solutions (Pb, Cu, Cd, Zn, Ni), the selectivity sequence was Pb > Cu > Cd > Zn > Ni. The strongest inhibition appeared in the binary Pb-Cu system, where uptake decreased to approximately 40% of the single-ion value, indicating direct competition for identical surface sites. By elucidating the temperature-dependent relationship between structure, mechanism, and performance, this work provides both theoretical insights and a methodological framework for the rational design of high-performance adsorbents for heavy metal remediation in complex environmental systems.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiaofeng Mo,Mengye Wang,Han Song,Jie Li,Zhen Wu,Zhang Lin
Organic lead halide perovskite is a promising piezocatalyst for piezocatalytic H 2 production, meanwhile, large amount of unutilized lead resources in lead smelting residues have caused ecological security and resource waste problems. Here, we report an efficient Pb upcycling approach to recover lead halides from lead smelting residues to create lead halide perovskites (r-FAPbBr 3-x I x ), distinguished by the remarkable piezoelectric properties, for piezocatalytic H 2 evolution. Zinc impurities, concurrently from these residues, found their utilization in the partial substitution of Pb 2+ within the halide octahedra of r-FAPbBr 3-x I x . The intervention of zinc enhancing desorption of hydrogen from r-FAPbBr 3-x I x and culminating in a pronounced H 2 yield as 157.80 μmol·g −1 ·h −1 . Notably, the used r-FAPbBr 3-x I x that lost its functional prowess could be regenerated and exhibited a piezocatalytic capacity similar to its initial state, perpetuating a sustainable cycle of utility. This pioneering route to Pb upcycling furnishes an alternative avenue for the preparation and utilization of lead-based perovskites.
研究领域:
材料科学
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环境科学
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能源科学
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高影响因子
Energy Technology
·
2022
·Vol. 10
·期 12
·2200983
·
IF 4.149
Hongxi Shi,Lei Zhang,Hao Huang,Yali Ou,Xiaoting Wang,Ziyu Li,Dan Chi,Shihua Huang
Two-dimensional perovskite materials attract great attentions for the application of perovskite solar cells (PSCs) due to the regulable bandgap and high stability. However, the power conversion efficiency (PCE) of 2D PSCs is far behind in that of three-dimensional PSCs. Herein, Dion–Jacobson (DJ) phase Pb–Sn perovskite of (PhDMA)MA 4 (Pb 0.5 Sn 0.5 ) 5 I 16 in 2D PSCs is introduced, which has suitable bandgap of 1.27 eV and offers the candidate for the absorber of bottom device in all perovskite tandem solar cells. The nonlinear bandgap behavior of 2D Pb–Sn perovskite materials is certified by adjusting the recipe of precursors to vary the bandgap of perovskite films. Moreover, MACl is employed to improve the film quality of 2D Pb–Sn perovskite, leading to the suppression of the defect density and nonradiative recombination for 2D PSCs. As a result, a high PCE of 12.2% is achieved for DJ phase 2D Pb–Sn PSCs.
研究领域:
材料科学
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光伏技术
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纳米材料
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能源化学
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半导体器件
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高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Xiangrong Cao,Lei Kang,Shaoxing Guo,Minggang Zhang,Zheshuai Lin,Jianhua Gao
Developing environmentally friendly, stable, and narrow and direct band gap halide perovskite materials has attracted substantial interest because of their wide range of potential applications. Here, an all-inorganic Pb-free halide double perovskite, Cs2NaVCl6, was prepared by the solid-state reaction method and hydrothermal method. Cs2NaVCl6 crystallizes in the cubic Fm3̅m space group with the unit parameter a = 10.3497(14) Å. The combined density functional theory and experimental study demonstrates that the compound is a direct band gap semiconductor with a band gap of ∼2.64 eV. More importantly, it exhibits strong visible and near-infrared light absorptions and markedly ambient and thermal stability.
研究领域:
材料科学
·
光伏技术
·
无机化学
·
半导体材料
·
光电子学
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DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 115
·113940-113950
·
IF 3.289
Xi Wen,Chun-Tao Shao,Wei Chen,Yong Lei,Qin-Fei Ke,Ya-Ping Guo
Pb(II) ions are highly harmful to the environment and human health because of their bioaccumulation, non-degradability and toxicity. Herein, we fabricated mesoporous carbonated hydroxyapatite (HAP)/chitosan (CS) porous materials (MHCMs) by using calcium carbonate/CS porous materials (CCPMs) as precursors. After soaking in phosphate buffer solution (PBS), the CaCO3 particles in the CCPMs were converted to carbonated HAP plates with a preferred c-plane orientation via a dissolution–precipitation reaction. The MHCMs possessed interconnected macropores with pore sizes of 50–150 μm and mesopores with pore sizes of 3.97 nm, which caused them to have a great BET surface area of 111.3 m2 g−1 and a pore volume of 0.199 cm3 g−1. The sorption performance of the MHCMs for Pb(II) ions was evaluated by the flow of 400 mg L−1 lead solutions through the adsorbents, and HAP/CS porous materials (HCPMs) served as control samples. After adsorbing Pb(II) ions, the HAP particles in both the MHCMs and HCPMs were transferred into lead hydroxyapatite (PbHAP) rods. At the adsorption equilibrium, the adsorption amounts of the MHCMs and HCPMs arrived at 559.6 and 264.4 mg g−1, respectively. The MHCMs had better adsorption properties than the HCPMs because of their large surface area, hierarchically porous structures, low Ca/P ratio, good degradability and plate-like carbonated HAP with a preferred c-plane orientation. The adsorption of Pb(II) ions on MHCMs exhibited higher compliance with the pseudo-second-order kinetic model than the pseudo-first-order kinetic model, suggesting that the adsorption process was mainly controlled by chemical adsorption for Pb(II) ions. Therefore, the MHCMs have great potential for the removal of Pb(II) ions from aqueous solutions even under flow conditions.
研究领域:
环境科学
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材料科学
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水处理
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吸附技术
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无机化学
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高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2019
·Vol. 80
·期 5
·989-997
·
IF 1.624
Zeng Wen-Juan,Wang Cai-Yun,Wang Yu-Hui,Guo Hong-Mei,Huang Yu,Zhang Xiao-Liang
As a kind of earth-abundant and cheap natural clay mineral, palygorskite (Pal) was facilely modified by grafting with graphene oxide (GO) to fabricate GO/Pal composites for rapid removal of Pb(II) from aqueous solutions. The results of characterization confirmed that the GO/Pal composites were successfully grafted between GO sheets and Pal nanorods. The effects of pH, adsorbent dosage, adsorption time, initial Pb(II) concentration and temperature on the adsorption of Pb(II) onto the GO/Pal composites as adsorbents were systematically investigated. The maximum adsorption capacity over 106.6 mg/g was obtained within a short adsorption time of less than 1 h even at 298.15 K. The adsorption of Pb(II) was a fast process that more accurately followed the pseudo-second-order kinetic equation. This process also could be described better with the Langmuir equation model than the Freundlich model. The negative values of Δ G ° and the positive values of Δ H ° and Δ S ° indicated that it was a spontaneous, endothermic and entropy-increasing adsorption process. Compared with pristine Pal and GO powders, such the GO/Pal composites as a cost-efficient and eco-friendly adsorbents could significantly improve the adsorption properties of Pb(II) and would have potential application in the industrial wastewater treatment for rapid removal of Pb(II).
研究领域:
环境科学
·
材料化学
·
水处理技术
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DOI
高影响因子
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