SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Qing Nie,Yu Sun,Dongxu Xue,Jianwei Fan,Wei-xian Zhang
The coexistence of oxyanion-type and cationic heavy metals in complex aqueous systems poses a significant challenge for adsorption-based remediation. Herein, mesoporous silica-supported manganese‑lanthanum mixed oxides (Mn x La 1-x @MCM-41) were synthesized via an oxidation-coprecipitation strategy. The mesoporous silica framework effectively confined amorphous Mn/La oxides, suppressing oxide aggregation and manganese leaching. The as-prepared Mn x La 1-x @MCM-41 materials exhibited efficient removal of heavy metals, with maximum adsorption capacities of 57.3 mg g −1 for As(V), 141.6 mg g −1 for Cd(II), and 333.0 mg g −1 for Pb(II). By adjusting the Mn/La molar ratio, the adsorption behavior toward different metal species could be systematically regulated, with La-enriched compositions favoring As(V) uptake and Mn-rich materials exhibiting enhanced affinity toward Cd(II) and Pb(II). High removal efficiencies for all three heavy metals were maintained under multicomponent coexisting conditions. The composition-dependent adsorption behavior reflects a functional differentiation of Mn- and La-associated surface sites, enabling the simultaneous immobilization of oxyanion and cationic contaminants. Overall, this work demonstrates that integrating mesoporous confinement with compositional regulation provides an effective strategy for constructing stable and multifunctional adsorbents for multicomponent heavy-metal remediation.
✓ 已验证
DOI
高影响因子
Toxics
·
2026
·Vol. 14
·期 5
·372
·
IF 4.9
Chao Xu,Yuanzhen Li,Lisha Chen,Lujie He,Ruihan Xu,Tianyang Li,Lili Niu,Weiping Liu,Zili Guo,Chenjian Hu
The toxicity of radioactive metals arises from both chemical toxicity and radiotoxicity.210Pb(II) is a long-lived radionuclide in the decay chain of natural uranium series238U and exhibits extremely high toxicity. Both210Pb(II) and Pb(II) are widely present in natural water bodies. However, their combined toxicity remains unclear. Based on this, this study used zebrafish embryos as model organisms to investigate developmental toxicity, behavioral toxicity, and thyroid disruption effects, through single and combined exposure to Pb(II) (0, 1, 10, 100 μg/L) and210Pb(II) (0, 100, 1000 Bq/L) for 120 h by comparing the radiotoxicity of210Pb(II) with the chemical toxicity of Pb(II) and further exploring their combined effects. The results showed that following exposure to different environmental concentrations of Pb(II) and environmental activity levels of210Pb(II), exposure to Pb(II) alone caused an increase in the malformation rate of zebrafish embryos, a decrease in locomotor activity, and significant upregulation of thyroid-related genes, including thyroid hormone receptor beta (TRβ) and corticotropin-releasing hormone (CRH) in the larvae. Exposure to210Pb(II) alone had no significant effects on zebrafish embryos. Notably, compared with the individual exposure groups, the toxic effects in the combined exposure group of Pb(II) and210Pb(II) were further significantly enhanced. Furthermore, correlation analysis indicated a positive correlation between malformations in zebrafish embryos and the expression of key genes in the hypothalamic–pituitary–thyroid (HPT) axis. These findings suggest that under combined exposure, the chemical toxicity of Pb(II) plays a dominant role, while the radioactive component210Pb(II) exerts a synergistic amplification effect. This study provides important scientific evidence for improving the environmental risk assessment of radioactive metals.
✓ 已验证
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2026
·
IF 9.9
Yanyun Ju,Qimeng Zhang,Tingqiang Lin,Rui Feng,Zehong Wang,Bowei Liu,Ling Zhou,Lijie Dong
Poly (amide acid) acts as an interfacial mediator via hydrogen bonding. • PZT content is increased by 2.8 times with an optimized PAA concentration of 8 wt%. • Sintered flexible GFF/PZT composite forms a continuous piezoelectric ceramic network. • The flexible sensor achieves high sensitivity and excellent durability. Flexible piezoelectric composites have attracted increasing interest for sensor applications. However, for flexible fiber-based piezoelectric composites, constructing a continuous ceramic network with high loading and robust interfacial bonding on the fiber fabric remains challenging. In this study, we fabricated flexible glass fiber fabric (GFF)/PZT piezoelectric composites. Poly (amide acid) (PAA) was introduced as a molecular mediator on the GFF, where PAA forms hydrogen bonds with the hydroxyl group and acetate groups of the PZT sol, enabling a 2.8-fold increase in PZT loading at an optimized PAA concentration of 8 wt%. The resulting GFF/PZT composite exhibits a continuous ceramic phase and retains good flexibility with a minimum bending radius of 15 mm. After encapsulation with interdigitated electrodes via epoxy resin (Ep), the GFF/PZT/Ep sensor achieves a minimum bending radius as low as 2.5 mm and exhibits enhanced electrical properties: a dielectric constant of 147, a low dielectric loss of 0.01 at 10 3 Hz, and an inverse piezoelectric coefficient of 119.5 p.m./V. As a bending sensor, it delivers a high sensitivity of 7.52 V per unit flexural strain and excellent durability over 1000 cycles. As a vibration sensor, it attains a sensitivity of 211.16 mV/g at 10 Hz and maintains stable output over 10,000 cycles. This work offers a promising strategy for developing flexible piezoelectric composites for energy conversion applications. Download: Download high-res image (1MB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2026
·
IF 5.4
Somayeh Mirsadeghi,Hamed Zandavar,Alireza Soroush,Seied Mahdi Pourmortazavi
Renewable NC/PbO/Pb 3 O 4 nanofibers engineered for Cr(VI) waste treatment; • Dual-oxide valence synergy enhances interfacial stability and Pb O site density; • Rapid uptake and high time-point adsorption capacity (754 mg g −1 ) in representative realistic concentration; • Thermo-mechanistic modeling links kinetics to matrix-filler energetics; • Pb leaching ≤7.9 μg L −1 ; safe operation verified across regeneration cycles. Electrospun nitrocellulose (NC) nanofibers embedded with dual lead oxides (PbO/Pb 3 O 4 ; 2.5 wt% each oxide) were developed as a reusable adsorbent for hexavalent Chromium [Cr(VI)] capture while enabling a “blueprint-style” thermo-mechanistic performance profiling. SEM confirmed uniform nanofibers with an average diameter of 111.1 nm, and FTIR verified oxide incorporation through characteristic Pb-O/Pb-O-Pb vibrations in the low-wavenumber region. N 2 physisorption indicated a slight but steady rise in accessible porosity after oxide embedding. Surface area (BET) increased from 1.34 to 1.83 m 2 g −1 , and total pore volume from 0.055 to 0.0687 cm 3 g −1 . This change aligns with particle decoration or embedding that enhances interfacial voids without forming microporosity. Under dilute optimization conditions (C 0 = 5–30 mg L −1 ), the composite achieved 98% Cr(VI) removal at pH 3, an adsorbent dosage of 0.03 g, and a contact time of 25 min. To verify performance under representative high-strength industrial loading, kinetics were further evaluated at the controlled Cr(VI) solution prepared at the measured barium chromate production-line concentration (C 0 = 470 mg L −1 ), yielding rapid uptake with q t = 754 mg g −1 at 25 min. Equilibrium modeling followed Langmuir behavior ( q m = 367.5 ± 18.4 mg g −1 , K L = 4.33 ± 0.68 L mg −1 , R 2 = 0.98; R L = 0.044–0.0076), with more favorable apparent Langmuir-derived free-energy descriptors for the composite than for neat NC (ΔG°:-1.57 ± 0.45 to −3.62 ± 0.39 kJ mol −1 ), while kinetics were best described by the pseudo-second-order model (R 2 = 0.99; q e = 441.7 ± 12.6 mg g −1 ). The nanofiber retained 70.1 ± 2.1% of its adsorption capacity after 25 adsorption-desorption cycles, and Pb leaching remained low (2.8–7.9 μg L −1 ; 0.006–0.017% of embedded Pb), well below relevant guideline/action thresholds. A Comparative Performance Index (CPI) integrating capacity, affinity, and energy criteria demonstrated consistent performance under varied operating conditions. This thermo-mechanistic framework links laboratory adsorption descriptors with early process-screening criteria, providing a basis for subsequent continuous-flow validation. Download: Download high-res image (270KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Pan Haibin,Bai Yang,Sun Kexuan,Yang Ming,Tian Ruijia,Meng Yuanyuan,Gao Jiangwei,Wang Yaohua,Wang Jingnan,Zhou Shujing,Song Zhenhua,Xiaoyi Lu,Liu Chang,Ge Ziyi
All-perovskite tandem solar cells (PTSCs) demonstrate exceptional potential to surpass the Shockley-Queisser (SQ) theoretical limit. However, practical implementation faces critical challenges due to a self-reinforcing photothermal-mechanical degradation mechanism originating from multiscale physical couplings. In this study, a multifunctional polyamine ligand triphenyltriamine thiophosphate (TPTA) was introduced into the tin-lead (Sn-Pb) perovskite solution system to establish an I-Sn-N coordination-mediated lattice stabilization framework, and the photothermal-mechanical coupling path was cut off from multiple aspects such as suppressing periodic oscillations and regulating stress. Consequently, single-junction Sn-Pb perovskite solar cells (PSCs) achieve a power conversion efficiency (PCE) of 23.4% and retaining 94.9% of initial performance after 950 hours of maximum power point (MPP) tracking. When the device is integrated into the 2-terminal (2 T) tandem architecture, its PCE reaches a significant level of 29.6 % (certified PCE of 28.9%), and 93.4% of the initial efficiency can be maintained after 900 hours continuous operation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
·
2025
·Vol. 47
·期 7
·1-18
·
IF 3.8
Liu Haicheng,Rao Chenxuan,Xu Huixuan
This study investigated the effects of different aging treatments (UV light, potassium permanganate, and sodium hydroxide treatments) on the adsorption of lead (Pb(II)) by PET microplastics, as well as the impact of Microcystis aeruginosa on lead adsorption by PET microplastics. The results indicated that different aging treatments significantly affected the adsorption capacity of microplastics, which could be attributed to the increased functional groups and surface porosity during the aging process. Kinetic analysis revealed that the adsorption of Pb(II) follows a pseudo-second-order model, suggested that the adsorption process is mainly controlled by chemical adsorption. Intraparticle diffusion analysis further elucidated the migration mechanism of Pb(II) within the microplastics. On the other hand, the presence of Microcystis aeruginosa significantly enhanced the adsorption capacity of microplastics. As the concentration of microalgae increases, the promoting effect of microalgae on Pb(II) adsorption by microplastics gradually strengthens, with extracellular polymeric substances (EPS) secreted by microalgae playing a key role in facilitating Pb(II) adsorption. These findings suggested that microalgae could strengthen the role of microplastics as carriers of heavy metal lead and aggravate the risk of lead pollution diffusion in aquatic ecological environment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Qilong Wu,Xin Wang,Zongyi Li,Ruofeng Yang,Yuli Fan,Jiaxuan Lyu,Jie Wang,Shaojie Wang,Yan Wei,Ziwei Liang,Weimo Han,Liqin Zhao,Di Huang
Titanium (Ti) implants face significant clinical challenges due to their biological inertness and susceptibility to peri-implant infections and oxidative stress. In this study, a multifunctional composite coating was engineered by immobilizing Prussian blue@black phosphorus (PB@BP) nanohybrids onto alkali-heat-treated titanium surfaces via a polydopamine (PDA) adhesive layer. The coating exhibited superior structural stability and improved hydrophilicity. Under 808 nm near-infrared (NIR) irradiation, it demonstrated power density-dependent photothermal antibacterial efficacy, reaching temperatures up to 59.6 °C. Specifically, the PDA/PB@BP + NIR group achieved remarkable inhibition rates of 99.76 ± 0.24 % against Escherichia coli and 99.27 ± 0.23 % against Staphylococcus aureus , effectively minimizing the risk of implant-associated infections. Furthermore, the coating promoted HUVECs migration, achieving a scratch healing rate of 70.57 % within 36 h. The PB@BP nanostructures functioned as potent nanozymes, effectively scavenging excessive reactive oxygen species (ROS) to protect cells from oxidative damage. Meanwhile, the sustained degradation of BP nanosheets provided a continuous supply of phosphate ions, which synergistically with the PDA layer, accelerated the differentiation and biomineralization of MC3T3-E1 cells. Collectively, the PDA/PB@BP composite coating orchestrates a bioactive microenvironment that integrates photothermal antibacterial, antioxidant, pro-angiogenic, and pro-osteogenic functionalities. This study provides a versatile strategy and a solid experimental foundation for the design of next-generation titanium-based implants with advanced regenerative and anti-infective capabilities.
✓ 已验证
产品关联
DOI
高影响因子
MINERALS ENGINEERING
·
2026
·
IF 5
Yunzhen Hu,Kangjing Wu,Shuai Wang,Zhanfang Cao,Xin Ma,Hong Zhong
The flotation separation of chalcopyrite and galena remains challenging due to their similar surface properties. Here, we demonstrate that H 2 O 2 pretreatment passivates Cu sites (forming Cu–O) while activating Pb sites (forming Pb–O) on mineral surfaces, which transforms sodium 2-(dithiocarboxylato)ethyl acetate (DTCA) from non-selective into a galena-selective depressant. Micro-flotation experiments indicate that with H 2 O 2 oxidation duration of 30 min, pH of 10, and DTCA dosage of 100 mg/g, galena recovery can be reduced to below 5% while maintaining chalcopyrite recovery above 90%. Following oxidation, the adsorption amount of chalcopyrite decreased from 96.54 to 7 mg/g, while that of galena increased from 101.32 to 102.45 mg/g. Multiscale characterizations (FTIR, XPS, ToF-SIMS) indicate that DTCA adsorbs onto the surfaces of chalcopyrite and galena, respectively, via chelation between S–Cu–S and S–Pb–S bonds. Density functional theory (DFT) calculations confirm that oxidation enhanced the adsorption strength of DTCA on the surface of galena, with the adsorption energy shifting from −2.571 to −2.645 eV. Conversely, adsorption strength decreased significantly after oxidation of chalcopyrite, with the adsorption energy shifting from −2.470 to −1.588 eV. Closed-circuit tests on industrial concentrates yielded copper recovery and grade reached 93.13% and 27.43%, respectively, while lead achieved 96.33% recovery and 43.21% grade, with a separation index (SI) of 2.55, surpassing that achieved by the toxic potassium dichromate(K 2 Cr 2 O 7 ) method. This study proposes a Cr (VI)-free flotation strategy for efficient Cu–Pb separation, offering a promising alternative to conventional environmentally hazardous methods.
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
·
2020
·Vol. 2020
·期 42
·4007-4014
·
IF 2.529
Lu Qi,Zhaohui Chen,Lu Li,Qun Jing,Na Li,Zhongqi Jiang,Xiaoyu Dong,Ming-Hsien Lee
Two homologous new mixed-metal phosphates K 2 PbBi 2 (PO 4 ) 2 (P 2 O 7 ) ( I ) and Rb 2 CdBi 2 (PO 4 ) 2 (P 2 O 7 ) ( II ) were successfully synthesized in A 2 BBi 2 (PO 4 ) 2 (P 2 O 7 ) (A = K, Rb, B = Pb, Cd) system through the traditional high-temperature solid-phase method. The single crystal structures of the two compounds are shown to be the unique three-dimensional (3D) framework composed of different types of layers, but not isomorphic. We compared series compounds A 2 PbBi 2 (PO 4 ) 2 (P 2 O 7 ) (A = K, Rb, Cs), which are isomorphic and crystallize in the same space group Pnma . It is noteworthy that they are distinct different in degree of structural disorder, which is tuned by A-site cations. The effect of A-site cations is recognized by analyzing the disorder degree in three related structures and other available 182 mixed-metal phosphates. To the best of our knowledge, such structural analysis is rarely reported in inorganic phosphates and the cation modulation strategy can be used to guide structural disorder according to the difference-value (D-value) of cation radii. Furthermore, the syntheses, thermal analysis, relevant spectroscopic measurements and theoretical calculations for I and II compounds were also discussed. Graphical Two new mixed-metal phosphates K 2 PbBi 2 (PO 4 ) 2 (P 2 O 7 ) and Rb 2 CdBi 2 (PO 4 ) 2 (P 2 O 7 ) were firstly reported and the cation size effect has substantial influence on the crystal structural disorder combining with the title compounds and 182 phosphates.
研究领域:
无机化学
·
材料科学
·
晶体学
·
固态化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2026
·
IF 5.1
Jiacheng Cao,Min Zhu,Xuefeng Lu,Xiaonan Chen
Oxide thermoelectric materials demonstrate superior structural stability and environmental compatibility; however, their practical applications are limited by relatively low figure-of-merit (ZT) values. This study overcomes this limitation in strontium barium niobate (SBN) through entropy-mediated Pb doping, achieving a record ZT of 0.42 at 1073 K – the highest reported for SBN-based ceramics. By designing a medium-entropy (ΔS = 1.30R) (Sr0.5Ba0.3La0.2)1−xPbxNb2O6−δ system, electron–phonon transport properties are effectively optimized. Pb doping enhances carrier concentration while maintaining a high Seebeck coefficient, attributed to the contribution of Pb orbitals. Simultaneously, lattice thermal conductivity (κlat) is reduced through dislocation engineering and induced strain fields, as verified by geometric phase analysis. The performance improvement is further supported by local distortions of NbO6 octahedra, as well as the formation of lead and oxygen vacancies. This work not only demonstrates the potential of SBN as a promising oxide thermoelectric material but also presents a broadly applicable doping strategy for developing high-performance oxide energy conversion materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Muhammad Nasir Rafiq,Zhonghua Dai,Yuanyuan Zheng,Xujun Li,Chenxi Liu,Xin Zhao,Yu Cong,Shuitao Gu
Lead-based ceramics with high energy storage and electrical capabilities are developed as high-performance materials for pulsed power systems. The (Pb, Cd, La)(Zr, Sn, Ti)O 3 (PCLZST) anti-ferroelectric ceramics attract significant attention as energy storage materials. In this work, ceramics (Pb 0.97- x Cd x La 0.02 )(Zr 0.93 Sn 0.05 Ti 0.02 )O 3 ( x = 0.01, 0.015, 0.02 and 0.025) have been prepared using a solid-state method, and their dielectric and energy storage characteristics are investigated. The results indicate that Cd 2+ doping at the A-site effectively suppresses grain growth, leading to a minimum average grain size of 1.24 μm in PCLZST ceramics. The PCLZST ceramics exhibit orthorhombic phases and high relaxation factors, confirming their excellent antiferroelectric nature. Notably, the energy storage density of PCLZST ceramics is 10.09 J/cm 3 , the recoverable energy storage density is 7.79 J/cm 3 , and the discharge time is 0.102 μs reflecting optimal comprehensive performance. These findings emphasize the efficacy of Cd-doped PLZST ceramics in advanced energy storage and pulse power systems, underscoring their potential to drive future technological advancements.
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Ruixin Guo,Shu Guo,Mingjun Xia,Lijuan Liu,Minjuan Li,Sangen Zhao,Xiaoyang Wang
Ba1.09Pb0.91Be2(BO3)2F2 (BPBBF), a previously unreported lead-containing beryllium borate fluoride, has been successfully grown through a high-temperature flux method. Its structure is solved by single-crystal X-ray diffraction (SC-XRD), and it is optically characterized via infrared, Raman, UV–vis–IR transmission, and polarizing spectra as well. SC-XRD data suggests that it can be indexed by a trigonal unit cell (space group P3m1) with lattice parameters a = 4.7478(6) Å, c = 8.3856(12) Å, Z = 1, and V = 163.70(5) Å. This material could be considered as a derivative of the Sr2Be2B2O7 (SBBO) structural motif. It consists of 2D [Be3B3O6F3]∞ layers in the crystallographic ab plane, with divalent Ba2+ or Pb2+ cations serving as spacers among the adjacent layers. Ba and Pb were found to adopt a disordered arrangement in the trigonal prismatic coordination within the BPBBF structural lattice, which is evidenced by both structural refinements against SC-XRD data and energy dispersive spectroscopy. The UV absorption edge (279.1 nm) and birefringence (Δn = 0.054@ 546.1 nm) of BPBBF are confirmed by UV–vis–IR transmission and polarizing spectra, respectively. The discovery of this previous unreported SBBO-type material, BPBBF, along with other reported analogues such as BaMBe2(BO3)2F2 (M = Ca, Mg, and Cd), provide a prodigious example for tuning the bandgap, birefringence, and short UV absorption edge via simple chemical substitution.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）