International Journal of Applied Ceramic Technology
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2025
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IF 2.3
Yuou Yuan,Hengchang Nie,Zhiyan Guo,Jinghui Peng,Biao He,Genshui Wang,Shiguang Yan,Fanglin Du,Liang Shi,Xiaofei Qu,Shuai Zhang
Ferroelectric thin films have emerged as a research focus in recent years due to their outstanding performance and eco-friendliness. This study reports on the fabrication of high-quality 0.55Bi 0.5 Na 0.5 TiO 3 -0.45SrTiO 3 +0.5 mol% Mn+x mol% Co (BNT-ST-Mn-x%Co) thin films on LaNiO 3 /Si (100) substrates using the sol–gel and spin–coating techniques. Through comprehensive structural analysis using multiple techniques, including X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy, we demonstrate that cobalt incorporation enhances both the breakdown strength and relaxation properties of these films. Notably, the BNT-ST-Mn-1%Co film exhibits exceptional characteristics, achieving a maximum polarization of 73.62 µC/cm 2 under an electric field of 900 kV/cm, coupled with a dielectric constant of 1119 at 1 kHz. The co-doping of cobalt and manganese yields films with high polarization intensity even at lower electric fields, showcasing promising potential for a wide range of applications.
研究领域:
材料科学
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电子工程
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产品关联
DOI
高影响因子
ENVIRONMENTAL POLLUTION
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2025
·
IF 7.3
Minyi Huang,Wentao Huang,Renyan Duan,Yingfeng Huang,Yongqiang Xia
Baicalein has pharmacological functions, such as antioxidant and anti-inflammatory properties, and has been shown to alleviate damage to organs caused by environmental pollutants. However, the mechanism by which baicalein reduces the toxic effects of metals needs further research. This study used Pelophylax nigromaculatus tadpoles as a model to explore the toxicological effects of lead (Pb) on the gut-liver axis, and the mechanism by which baicalein alleviates lead toxicity. Analysis of the gut microbiota showed that baicalein alleviated abnormal changes in the gut microbiota following Pb exposure, mainly by increasing the abundance of beneficial bacterial genera, including Cetobacterium , Clostridioides , and Monoglobus . Liver metabolomics showed that compared to a natural recovery, baicalein treatment significantly increased the content of metabolites such as uridine, 17α-hydroxypregnenolone, niacin, and cucurbitacin E, and significantly reduced the content of metabolites such as linoleic, gluconic acid, and tetrahydrocortisone. These differential metabolites could be enriched in pathways such as pyrimidine metabolism, nicotinic acid and nicotinamide metabolism, and steroid hormone biosynthesis, which were beneficial for the treatment of liver injury. There was a significant correlation between the gut microbiota and the main differential metabolites in the liver with the addition of baicalein. The improvement of these metabolic pathways by baicalein is beneficial for the repair of the liver and intestines. Therefore, baicalein can increase the abundance of beneficial gut microbiota, improve liver metabolism, and thus reduce the damage of Pb exposure to the gut-liver axis.
研究领域:
环境毒理学
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药理学
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Mengke Guo,Yanshu Shi,Xuekun Wang,Yiqian Wang,Jile Wang,Xiaoyun Qin,Tingting Guo
Different structures and morphologies of organic materials exhibited distinct optoelectronic properties, making it crucial to optimize the structure and morphology of these materials for achieving high-performance optoelectronic devices. Here, a simple physical vapor deposition method was successfully employed to fabricate uniformly-sized sheet-like lead phthalocyanine (PbPc) in two different scales (micron and nano). Both types of PbPc underwent changes in crystal structure, containing multiple components that affected optoelectronic performance. Subsequent optoelectronic tests revealed that PbPc nanosheets and microsheets each demonstrated unique advantages. PbPc nanosheets exhibited the highest responsivity, reaching 7.91 × 10 2 times that of the raw materials at a 0.5 V bias. Conversely, the responsivity of PbPc microsheets increased to 20.4 times that of the raw materials, accompanied by a rise time of 153.84 ms and a fall time of 246.75 ms, demonstrating rapid response capabilities. This paper significantly enhances the diverse optoelectronic properties of PbPc through a simple approach, providing a new strategy for developing high-responsivity organic photodetectors and fast-response organic photodetectors.
研究领域:
材料科学
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光学工程
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DOI
高影响因子
Biosensors-Basel
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2025
·Vol. 15
·期 5
·267
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IF 5.6
Fei Wang,Xiao Peng,Ziqian Xiao,Ying Ge,Bilin Tao,Zhaoyong Shou,Yifei Feng,Jing Yuan,Liang Xiao
A composite (N-rGO@ppy) of N-doped reduced graphene oxide (N-rGO) coated with polypyrrole (ppy) particles was successfully synthesized. The incorporation of N-rGO significantly mitigates the aggregation of ppy synthesized in situ, and the doped N atoms improve the conductivity of graphene oxide (GO), thereby enhancing N-rGO@ppy’s redox properties. Firstly, a glassy carbon electrode (GCE) modified with N-rGO@ppy (N-rGO@ppy/GCE) was used in combination with a bismuth film and square-wave anodic stripping voltammetry (SWASV) for the simultaneous trace analysis of Pb2+and Cd2+. N-rGO@ppy/GCE exhibited distinct stripping peaks for Pb2+and Cd2+, with a linear range of 1 to 500 μg L−1. The limits of detection (LODs) were found to be 0.080 μg L−1for Pb2+and 0.029 μg L−1for Cd2+, both of which are significantly below the standards set by the World Health Organization (WHO). Subsequently, the same electrochemical sensing strategy was adapted to a more portable screen-printed electrode (SPE) to accommodate the demand for in situ detection. The performance of N-rGO@ppy/SPE for analyzing Pb2+and Cd2+in actual samples, such as drinking water, milk, and honey, showed results consistent with those obtained from conventional graphite furnace atomic absorption spectrometry (GFAAS).
研究领域:
分析化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Lu Qian,Zuncai Gu,Mengting Liu,Tao Deng,Chenhao Zhang,Jing Qian,Xingyi Huang,Chengquan Wang
Heavy metals pose a significant threat to ecosystems and human health due to their toxicity and persistence. In this work, we developed a high-performance electrochemical sensor for simultaneous detection of Cd 2+ and Pb 2+ using a cost-effective pencil graphite electrode (PGE) modified with alkalized Ti 3 C 2 MXene (alk-MXene/PGE). Cyclic voltammetry and electrochemical impedance spectroscopy were utilized to examine the electrochemical characteristics of different PGEs. Studies revealed that the optimal PGE for subsequent application was the one with HB hardness and a diameter of 2 mm. Compared with bare PGE and Ti 3 C 2 MXene modified PGE, alk-MXene/PGE exhibited enhanced electrical conductivity and optimized electrochemical performance, enabling sensitive and simultaneous detection of Cd 2+ and Pb 2+ in a single run. Linear relationships were achieved for Cd 2+ in the range of 5.0 × 10 −4 ∼ 7.0 × 10 −2 mg/L and for Pb 2+ in the range of 2.0 × 10 −4 ∼ 8.0 × 10 −2 mg/L, with detection limits of 8.10 × 10 −6 mg/L and 9.12 × 10 −6 mg/L, respectively. The developed electrochemical sensor was successfully applied to scallop samples, demonstrating its good practicability. This study underscores the potential of alkalized Ti 3 C 2 MXene-modified PGEs in electrochemical sensing of Cd 2+ and Pb 2+ simultaneously, paving new avenues for food quality monitoring and environmental analysis.
研究领域:
环境科学
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分析化学
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2019
·Vol. 26
·期 9
·8902-8913
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IF 2.914
Sun Chen,Chen Tong,Huang Qunxing,Wang Jun,Lu Shengyong,Yan Jianhua
Novel KMnO 4 -treated magnetic biochar (FMBC) was successfully synthesized by addition of Fe(NO 3 ) 3 during carbonization and KMnO 4 treatment following for Pb(II) and Cd(II) adsorption. SEM-EDS, XPS, and ICP-AES were used to evaluate the FMBC and magnetic biochar (FBC) on surface morphology, surface chemistry characteristics, surface functional groups, and Pb(II) and Cd(II) adsorption behavior. Results showed that the Langmuir maximum adsorption quantity of FMBC reached 148 mg/g for Pb(II) and 79 mg/g for Cd(II), nearly 7 times of that of FBC. The enhancement of FMBC for heavy metal adsorption was due to the successful load of manganese oxides and the increased oxygen functional groups consistent with XPS and FTIR results. The adsorption capacities of FMBC were maintained over 95% when the pH value was higher than 2.5 and 3.5 for Pb(II) and Cd(II), respectively. The adsorption performances of both heavy metals by FMBC were hardly influenced by ionic strength and humid acid. The adsorption capacities of FMBC could maintain over 50% and 87% after four cycles for Pb(II) and Cd(II), respectively. The saturation magnetization of FMBC was about 11.5 emu/g, which did not change after adsorption. This work proposed a new method to fabricate a magnetic biochar with high adsorption capacities of heavy metals Pb(II) and Cd(II).
研究领域:
环境科学
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材料科学
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DOI
高影响因子
ADVANCED MATERIALS
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2019
·Vol. 31
·期 44
·1904711
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IF 25.809
Bo Yang,Lixiao Yin,Guangda Niu,Jun-Hui Yuan,Kan-Hao Xue,Zhifang Tan,Xiang-Shui Miao,Ming Niu,Xinyuan Du,Haisheng Song,Efrat Lifshitz,Jiang Tang
Scintillators are widely utilized for radiation detections in many fields, such as nondestructive inspection, medical imaging, and space exploration. Lead halide perovskite scintillators have recently received extensive research attention owing to their tunable emission wavelength, low detection limit, and ease of fabrication. However, the low light yields toward X-ray irradiation and the lead toxicity of these perovskites severely restricts their practical application. A novel lead-free halide is presented, namely Rb 2 CuBr 3 , as a scintillator with exceptionally high light yield. Rb 2 CuBr 3 exhibits a 1D crystal structure and enjoys strong carrier confinement and near-unity photoluminescence quantum yield (98.6%) in violet emission. The high photoluminescence quantum yield combined with negligible self-absorption from self-trapped exciton emission and strong X-ray absorption capability enables a record high light yield of ≈91056 photons per MeV among perovskite and relative scintillators. Overall, Rb 2 CuBr 3 provides nontoxicity, high radioluminescence intensity, and good stability, thus laying good foundations for potential application in low-dose radiography.
研究领域:
材料科学
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辐射探测技术
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DOI
高影响因子
CHEMOSPHERE
·
2024
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IF 8.1
Guangwei Wu,Bin Wang,Chang Xiao,Fuyang Huang,Quan Long,Weiguo Tu,Shu Chen
Due to the rapid development of human beings, heavy metals are occurred in the Yunnan-Guizhou Plateau and Panxi Plateau, the special dry and hot climate areas. Pb and Cu can be quickly transferred through water-plant-animal, further harm to human health by food chain. Therefore, the study of heavy metal treatment is imminent. In this study, Biochar-montmorillonite composites were prepared by co-pyrolysis and characterized, and their ability to remove lead and copper from water-soil process were tracked. And their effectiveness in remediating soil contaminated by lead and copper was documented. The composite material has the rich pore structure, large specific surface area (81.5 m 2 /g) and a variety of surface functional groups such as C–C, C O, ester-metal and metal-oxygen bonds. Pb and Cu can be effectively adsorbed and fixed to the level of no harm to human health. The adsorption reaction of lead and copper on the Biochar-montmorillonite composites is more suitable to be described by Langmuir adsorption and pseudo-second-order kinetics models. The saturation adsorption capacity of the composite for Pb was measured as 212.5 mg/g. For Cu, it was 136.5 mg/g. The data were fitted by a two-compartment first-order kinetic model. f fast for Pb and Cu is estimated to be 0.81 and 0.78, respective. Fast adsorption is dominant and belongs to typical chemical adsorption, which is consistent with the second-order kinetic results. With 5 % of the composite, approximately 80 % of exchangeable heavy metals in those soils collected from the Yunnan-Guizhou Plateau and Panxi Plateau were reduced. The biochar-montmorillonite composites made Pb and Cu change to stable residual state, up to 35 %. Besides, it effectively restored the activity of urease and sucrase in soils. Results indicated that biochar-montmorillonite composites can be effectively used as an environment-friendly adsorbent or passivator to purify heavy metals in soils.
研究领域:
环境科学
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土壤修复
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产品关联
DOI
PubMed
高影响因子
ANALYTICAL LETTERS
·
2024
·
IF 1.6
Jing Yang,Zhe Lv,Bo Yang,Xiangdong Guo,Feiyong Qu,Yanping Miao,Dehui Li,Hongmei Gao,Wei Li
Photoluminescence enhancement provides an effective way to improve the performance of quantum dots. In this study, lead(II) determination was demonstrated based on phosphorescence enhancement using 1-thioglycerol-capped Mn-doped ZnS quantum dots. Under the optimized conditions, good linear correlations were obtained for Pb2+ from 10.00 to 5000 nM and 0.05000 to 100.0 mM with correlation coefficients of 0.9997 and 0.9979 and a detection limit of 2.56 nM. The method demonstrates good linearity and selectivity, suitable sensitivity, easy operation, and the determination of Pb2+ in Chinese herbal medicine.
研究领域:
分析化学
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环境科学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
·
IF 8.3
Qing Xu,Tianwei Zhang,Mengjia Liu,Min Wang,Kun Cao,Rong Chen
Luminescent perovskite nanocrystals (NCs), possessing the advantages of low cost, easy detection, and excellent luminescence, are becoming more and more significant in the fields of information encryption and decryption. Most hydrochromic perovskite NCs for information encryption have moderate reversibility and are easily passively decrypted by water in the moist air, limiting their practical applications. Herein, a lyochromic material is synthesized based on reversible phase transition between luminescent CsPbBr3–HBr (pretreating CsPbBr3 with HBr) and nonluminescent Cs4PbBr6, exhibiting excellent reversibility in 50 cycles triggered by CsBr solution. HBr treatment boosts the ion migration of NCs via diminishing surface ligands and passivating Br vacancy, assisting CsBr concentration acting as a crucial factor in dynamic ion exchange equilibrium between the trigger solution and CsPbBr3–HBr. By utilizing CsPbBr3–HBr as a safety ink, the CsBr-triggered photoluminescence switch has been demonstrated to be reproducible, stable, and reliable for information encryption and decryption.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MINERALS ENGINEERING
·
2024
·
IF 4.9
Guangsheng Zeng,Wei Weng,Shuiping Zhong,Xiaopeng Chi,Jiaozhong Cai,Wen Tan,Junnan Chen
The novel amidoxime-based collectors, 4-pyridylamidoxime (PA), 3-ethyl-4-pyridylamidoxime (EPA), and 3-methyl-5- tert -butyl-4-pyridylamidoxime (MBPA), were introduced in the lead-free flotation separation of wolframite from quartz and calcite. Compared with PA, EPA, and the traditional collector benzohydroxamic acid (BHA), MBPA exhibited a better separation and recovery capacity to wolframite ore. 4.0 × 10 -4 mol/L MBPA recovered more than 80 % wolframite, ∼24 % calcite, and ∼ 26 % quartz at pH 8.0 without Pb 2+ ions. Under the same conditions, BHA only floated out less than 35 % wolframite. The adsorption amount results exhibited a stronger adsorption ability of MBPA than BHA on wolframite surface. Further, the results of zeta-potential, FTIR, XPS and density functional theory (DFT) calculation revealed that MBPA could chemisorb on wolframite surface to form −N-Fe and −O-Fe bonds. MBPA had stronger electron-donating ability and weaker electron-accepting ability than BHA, which exhibited higher reaction activity. It was clear that MBPA was an excellent collector in the lead-free flotation separation of wolframite from calcite and quartz.
研究领域:
矿物加工工程
·
材料化学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Dianji Ding,Jiao Fei,Yong Yao,Yanji Jiang,Huimin Sun,Xianqiang Yin
Quantum dots (QDs), emerging semiconductor nanomaterials, have been detected in various environmental media and can adsorb co-existing contaminants (e.g., Pb 2+ ). Surface modifications aimed at enhancing the performance of QDs can significantly affect their physicochemical properties, but their effects on QDs environmental behavior remain unclear. Herein, we investigated the adsorption and co-transport behaviors of aminated (NQD), hydroxylated (OQD), and carboxylated cadmium sulfide QDs (CQD) with Pb 2+ via batch adsorption and quartz sand column experiments. The influence of ionic strength (IS) and cation valence on the co-transport of QDs and Pb 2+ was examined. Our experimental findings revealed that Pb 2+ inhibited the mobility of OQD and CQD but enhanced the transport of NQD due to the surface complexation and cation bridging effects. This promoting effect was weakened with increasing IS and cation valence, indicating the involvement of non-Derjaguin-Landau-Verwey-Overbeek forces. Furthermore, OQD and CQD with high mobility and strong affinity to Pb 2+ effectively promoted the transport of Pb 2+ , with CQD exhibiting a more pronounced effect than OQD. Conversely, NQD reduced Pb 2+ efflux due to their lower mobility and stronger adsorption to Pb 2+ . These results provide valuable insights into the role of surface modifications on QDs and their interactions with co-existing contaminants in subsurface environments.
研究领域:
环境科学
·
纳米技术
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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）