Journal of Cleaner Production
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2024
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IF 9.7
Jianyong Che,Wenjuan Zhang,Shuyue Feng,Yian Zuo,Chengyan Wang
Mechanochemistry has rapidly advanced as an effective method for recovering metals from hazardous wastes due to its mild reaction conditions, while understanding the underlying mechanisms remains a significant challenge. This work investigates the mechanochemical reduction of lead compounds using iron powder at room temperature , focusing on physicochemical properties and electrochemical performance. Notable transformations were observed in the crystal structures, morphologies, and thermal stability of PbSO 4 and PbCl 2 . Electrochemical tests indicated enhanced redox reactivity, decreased reduction potential, and reduced charge transfer impedance after mechanochemical treatment . Additionally, the reduction of PbSO 4 proved more challenging than PbCl 2 under the same conditions. Our findings provide valuable insights into the management of toxic lead waste and improve the understanding of the mechanochemical effects on redox reactions , with important implications for environmental applications.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
ORGANIC ELECTRONICS
·
2019
·
IF 3.495
Xin Qi,Ganghong Liu,Duo Wang,Ning Zhu,Yuqing Zhang,Zehao Zhang,Cuncun Wu,Xiangdong Li,Wei Luo,Yingqiang Li,Haozhe Hu,Zhijian Chen,Lixin Xiao,Shufeng Wang,Bo Qu
Interfacial modification as a feasible strategy to improve the properties of perovskite solar cells (PSCs) has been widely studied in recent years. In this work, PbCl 2 modification at the interface of SnO 2 /CH 3 NH 3 PbI 3 was used for CH 3 NH 3 PbI 3 -based planar PSCs. The introduction of PbCl 2 between SnO 2 and CH 3 NH 3 PbI 3 layers boosted the crystallization of perovskite film, which promoted the photovoltaic properties of corresponding PSCs. The open circuit voltage ( V OC ) and fill factor (FF) of the PbCl 2 -modified devices (1 mg/mL) were 1.11 V and 0.79, respectively, which were both higher than those of the reference devices without PbCl 2 (1.04 V and 0.76). Moreover, a steady-state power output efficiency exceeding 19% was obtained for the PbCl 2 -modified devices (1 mg/mL), which implied that PbCl 2 modification was an effective and low cost strategy for efficient PSCs.
研究领域:
材料科学
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光伏技术
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纳米科技
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表面与界面工程
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能源材料
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半导体器件
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功能材料
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DOI
高影响因子
Journal of Physical Chemistry Letters
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2025
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IF 4.6
Ronghuan Liu,Zhaojin Wang,Zi-Wei Zheng,Xiaobing Tang,Renjun Guo,Xuanyu Zhang,Peter Müller-Buschbaum,Hai Zhou,Kai Wang,Xiao Wei Sun
Methylammonium lead chloride perovskite (MAPbCl3), with its wide bandgap of ∼3 eV, exhibits unique advantages for near-UV to UV optoelectronic devices. However, the fast crystallization kinetics and significant solubility differences of MAPbCl3 precursors in solvents cause discontinuous films with high surface defect densities, severely limiting device performance. This study introduces a solution mediated dissolution recrystallization strategy to address the aforementioned issues, namely, employing a CsAc/methanol solution to dynamically reconstruct preformed MAPbCl3 films. During this process, Cs+ doping regulates the crystallization kinetics and suppresses the formation of pinholes caused by nonequilibrium crystallization, and Ac– anions passivate grain boundaries and surface defects through coordination. This synergistic approach yields dense, high-quality Cs0.35MA0.65PbCl3 polycrystalline films. The resulting self-powered photodetector demonstrates exceptional performance under 405 nm laser excitation: an on/off ratio of 1.38 × 106, responsivity of 0.278 A/W, detectivity of 3.49 × 1012 Jones, and a response time of 16 μs. These metrics significantly surpass those of previously reported solution-processed counterparts. This work offers a new pathway for fabricating high-quality chloride-based perovskite films and facilitates their application in optoelectronic devices such as transparent solar cells and radiation detectors.
研究领域:
材料科学
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光电子学
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纳米技术
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固体物理学
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化学工程
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Lingyan Gui,Xu Teng,Ye Yang,Tao Liu,Yaru Liang,Jun Zeng,Xianying Zhang,Linhai Li
Dual-emission fluorescence (FL) sensing platform could not only facilitate sensitive visual sensing, but also increase detection accuracy through the change of the FL response and FL color. Herein, a novel ratiometric FL sensing platform was fabricated using the dual-ligand-functionalized dual-emission Eu(III) nanomaterial (i.e., Eu-CDs) based on antenna effect-induced dual signal amplification strategy. In the as-prepared nanomaterial, 2-thenoyltrifluoro-acetone was used as the first ligand to sensitize the FL characteristic emission of Eu(III). Interestingly, the use of carbon dots as the second ligand for Eu(III) could not only further enhance the FL emission of Eu(III), but also serve as a reference signal to achieve the ratiometric FL signals for the detection of hydrogen peroxide. The detection mechanism was that the S elements in the thiophene unit could be turned into sulfone groups by oxidation with hydrogen peroxide, which changed the coordination environment of Eu(III), leading to the decrease in FL intensity at 616 nm. Based on the ratiometric FL signals, we realized the real-time monitoring and multicolor visual analysis of hydrogen peroxide with a detection limit of 1.88 μM. The extraordinary detection capability of hydrogen peroxide achieved the distinction of normal cells from cancer cells and the highly selective determination of serum glucose as the model target in hydrogen peroxide-involved enzymatic reaction. This work not only provided a novel path for the fabrication of high-performance ratiometric FL sensing platform by ligand-functionalized dual-emission Eu(III)-based nanomaterial, but also showed the potential feasibility for rational design of the FL sensing platform.
研究领域:
分析化学
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生物医学工程
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材料科学
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DOI
高影响因子
Colloids and Interfaces
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2025
·Vol. 9
·期 4
·49
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IF 3.2
Qian Lei,Lei Rao,Wencan Deng,Xiuqin Ao,Fan Fang,Wei Chen,Jiaji Cheng,Haodong Tang,Junjie Hao
Lead sulfide colloidal quantum dots (PbS QDs) have demonstrated great potential in short-wave infrared (SWIR) photodetectors due to their tunable bandgap, low cost, and broad spectral response. While significant progress has been made in surface ligand modification and defect state passivation, studies focusing on the interface between QDs and electrodes remain limited, which hinders further improvement in device performance. In this work, we propose an interface engineering strategy based on 3-aminopropyltriethoxysilane (APTES) to enhance the interfacial contact between PbS QD films and ITO interdigitated electrodes, thereby significantly boosting the overall performance of SWIR photodetectors. Experimental results demonstrate that the optimal 0.5 h APTES treatment duration significantly enhances responsivity by achieving balanced interface passivation and charge carrier transport. Moreover, The APTES-modified device exhibits a controllable dark current and faster photo-response under 1310 nm illumination. This interface engineering approach provides an effective pathway for the development of high-performance PbS QD-based SWIR photodetectors, with promising applications in infrared imaging, spectroscopy, and optical communication.
研究领域:
纳米技术
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光电子学
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材料科学
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半导体器件
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2024
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IF 18.5
Shiyuan Liang,Liyuan Chen,Cong Liu,Bowen Guo,Yijie Fan,Zhou Li,Yan Liu,Dan Luo
Antioxidant enzymes are considered to be the most direct and safe candidates to effectively resist oxidative stress and treat senile osteoporosis. However, due to their size, existing enzyme delivery carriers are inevitably endocytosed by cells and subsequently enter endosomes/lysosomes with low pH and rich in acid hydrolase, resulting in the limited therapeutic effects. In this work, an ultrasmall superoxide dismutase (SOD) nanoformulation reinforced with ultrathin ZIF-8 coating (utZIF-SOD) via in situ coordination-mediated self-assembly strategy is constructed. Notably, utZIF-SOD achieves direct, efficient cellular uptake mediated by small size effect, thereby avoiding lysosomal degradation. In particular, ultrathin ZIF-8 coating strengthened the stability of enzyme. Even in aged cells with high oxidative stress levels, utZIF-SOD maintained excellent stability, and its efficiency in scavenging excess intracellular reactive oxygen species (ROS) is ≈1.5 times that of native SOD, better promoting the osteogenic differentiation of aged bone marrow mesenchymal stem cells. In a senile osteoporosis mouse model, the bone mineral density increment after treatment with utZIF-SOD is ≈2 times that of native SOD, achieving the reversal of senile osteoporosis. This work demonstrates the great promise in the synthesis of ultrasmall nanoformulations with ultrathin metal-organic framework coating and opens new avenues for efficient enzyme delivery.
研究领域:
纳米技术
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生物医学工程
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药学
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老年学
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细胞生物学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Anfei Liu,Yunting Li,Lifan Li,Kaiju Chen,Meitao Tan,Fei Zou,Xingmei Zhang,Xiaojing Meng
Lead is a neurotoxic contaminant that exists widely in the environment. Although lead neurotoxicity has been found to be tightly linked to gut microbiota disturbance, the effect of host metabolic disorders caused by gut microbiota disturbance on lead neurotoxicity has not been investigated. In this work, the results of new object recognition tests and Morris water maze tests showed that chronic low-dose lead exposure caused learning and memory dysfunction in mice. The results of 16 S rRNA sequencing of cecal contents and fecal microbiota transplantation showed that the neurotoxicity of lead could be transmitted through gut microbiota. The results of untargeted metabolomics and bile acid targeted metabolism analysis showed that the serum bile acid metabolism profile of lead-exposed mice was significantly changed. In addition, supplementation with TUDCA or INT-777 significantly alleviated chronic lead exposure-induced learning and memory impairment, primarily through inhibition of the NLRP3 inflammasome in the hippocampus to relieve neuroinflammation. In conclusion, our findings suggested that dysregulation of host bile acid metabolism may be one of the mechanisms of lead-induced neurotoxicity, and supplementation of specific bile acids may be a possible therapeutic strategy for lead-induced neurotoxicity.
研究领域:
神经科学
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毒理学
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微生物学
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代谢组学
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产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
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2024
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IF 4.3
Yongfeng Liu,Yupeng Ying,Qingyu Xie,Zhaoju Gao,Xiuwen Shao,Min Zhou,Wei Pei,Xiaosheng Tang,Yusong Tu
Mixed-halide CsPb(Br/Cl)3 perovskite quantum dots (PeQDs) have attracted extensive attention in light-emitting diodes (LEDs), but their low photoluminescent efficiency and especially poor stability impede their practical applications. Here, we employ bifunctional didodecyldimethylammonium thiocyanide (DDASCN) with a pseudohalogen SCN– and branched DDA+ to obtain blue-emitting CsPbBr2Cl PeQDs. DDASCN significantly boosts the photoluminescence quantum yield to 92% by inhibiting nonradiative recombination. Importantly, DDASCN PeQDs show excellent stabilities against air, UV light, heat, and polar solvents. These improved performances were explained by density functional theory calculation, which shows that SCN– fills the Cl– vacancy by simultaneously binding with undercoordinated Pb2+ and Cs+, while DDA+ connects undercoordinated Br– and lies parallel to the PeQD core, leading to efficient passivation and a strong binding capacity. Finally, we achieved high-performance white LEDs by integrating our PeQDs, resulting in a color-rendering index of 92.9, a color gamut of 119.61%, and chromaticity coordinates of (0.33, 0.33). This provides an effective method to obtain efficient and stable CsPb(Br/Cl)3 PeQDs for practical applications.
研究领域:
材料科学
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光电技术
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纳米技术
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光子学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2024
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IF 3.2
Rui Cao,Xinxin Li,Teng Zhang,Hanxiao Tang,Ying Song,Zhijuan Zhang,Weisheng Feng
The development of metal ion detection probes with high sensitivity and selectivity is of utmost importance for the promotion of public health and environmental sustainability. In this work, a series of ratiometric fluorescent probes (RhB@UiO-67-NH 2 ) were successfully prepared using a one-pot method for the detection of metal ions, particularly As 5+ and Fe 3+ . Notably, the ratiometric fluorescent probe RhB@UiO-67-NH 2 (1:4) demonstrates dual functionality as a Fe 3+ turn-off probe and an As 5+ turn-on probe. The limits of detection (LODs) for As 5+ and Fe 3+ using RhB@UiO-67-NH 2 (1:4) were determined to be 0.521 μM (39.03 ppb) and 0.107 μM (5.97 ppb), respectively, which were the lowest records of reported LMOFs so far. The fluorescence quenching of Fe 3+ can be attributed to various mechanisms such as fluorescence resonance energy transfer (FRET), photoinduced electron transfer (PET), and competitive absorption (CA). Additionally, the fluorescence enhancement of As 5+ is primarily due to absorbance-caused enhancement (ACE) and PET. Moreover, the composite material RhB@UiO-67-NH 2 (1:4) exhibited excellent anti-interference capability and reproducibility for detecting Fe 3+ and As 5+ . The removal efficiency of As 5+ by RhB@UiO-67-NH 2 (1:4) exceeded 50.9 % when the initial concentration of As 5+ was below 20 mg/L. This work presents a valuable reference for future investigations and utilization of As 5+ and Fe 3+ sensing.
研究领域:
分析化学
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环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2025
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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
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纳米技术
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产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
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2024
·Vol. 53
·期 24
·10235-10243
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IF 3.5
Yibo Cui,Jindong Cao,Jiawei Lin,Chunxiao Li,Jiyong Yao,Kunjie Liu,An Hou,Zhongnan Guo,Jing Zhao,Quanlin Liu
Organic–inorganic metal halides (OIMHs) have drawn considerable attention due to their remarkable optoelectronic properties and substantial promise for nonlinear optical applications. In this research, phenazine has been selected as the organic cation because of its π-conjugated feature. Three compounds, (C12H9N2)PbCl3, (C12H9N2)SbCl4, and (C12H9N2)2InBr4·Br, were synthesized. Initial space group assignments were centrosymmetric for (C12H9N2)PbCl3 and (C12H9N2)SbCl4. However, under 1550 nm laser excitation, (C12H9N2)PbCl3 and (C12H9N2)SbCl4 exhibited second harmonic generation intensities ∼1.7 times greater than that of the benchmark KH2PO4. Structural reevaluation ultimately confirmed non-centrosymmetric P1 and P21 space groups for (C12H9N2)PbCl3 and (C12H9N2)SbCl4, respectively. Upon excitation at 335 nm and 470 nm, (C12H9N2)PbCl3, (C12H9N2)SbCl4, and (C12H9N2)2InBr4·Br emit fluorescence at room temperature. (C12H9N2)2InBr4·Br exhibits reversible phase transitions, showing potential for phase change energy storage. Our research underscores the critical role of comprehensive experimental validation in determining the precise crystallographic space groups and reveals the extensive potential of OIMHs as versatile candidates for advanced optoelectronic applications.
研究领域:
材料科学
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光电
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晶体学
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2024
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IF 7.4
Meng Zhang,Haohao Hou,Hongfu Zhou,Aimin Xiang,Yafeng Deng
Faced with extensive water pollution caused by dyes and heavy metals, it is imperative to create cost-effective adsorbents that can effectively eliminate residual pollutants in wastewater. The synthesis of polyvinyl alcohol/xanthan gum (PVA/XG) hydrogels involved a combination of freeze-thaw cycling technique and the adsorption characteristics and mechanisms of methylene blue (MB) and heavy metal ions Pb 2+ were investigated. In comparison to pure PVA hydrogels, the swelling behavior of PVA/XG3 hydrogel exhibited a 185 % increase in swelling rate. The adsorption test results suggested that PVA/XG3 hydrogel was effective in absorbing MB (27.39 mg/g) and Pb 2+ (17.07 mg/g) from a 50 mg/L pollutant solution. The adsorption process of MB and Pb 2+ by PVA/XG3 hydrogel followed Langmuir adsorption isotherm and the QFO models, indicating a preference for homogeneous physical adsorption. Specifically, the Langmuir isothermal model predicted that the q max of MB and Pb 2+ by PVA/XG3 hydrogel were 94.47 and 58.50 mg/g, respectively. Therefore, this essay has created a cost-effective and environmentally friendly method for producing versatile PVA/XG hydrogels specifically intended for water treatment purposes.
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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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）