ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 39
·2206838
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IF 19.924
Jingwei Zhu,Benlin He,Wenyu Zhang,Rui Tui,Haiyan Chen,Yanyan Duan,Hao Huang,Jialong Duan,Qunwei Tang
One of the key problems to improving the performance of a typical perovskite solar cell (PSC) is to minimize the defect-determined nonradiative recombination. So far, the cutting-edge strategies mainly focus on the film-scale defect manipulation at grain boundaries and surfaces by trial-and-error, but the intrinsic passivation mechanism and fundamental guideline in the perspective of crystal lattices are still unclear. Herein, a much lower defect formation energy of Pb Br antisite defect at (110) plane than that at (h00) planes is demonstrated by theoretically studying the crystal plane-dependent defect density in an inorganic CsPbBr 3 film, and then the authors precisely control the plane growth by selectively anchoring (pseudo-) halide anions from ionic liquids to (110) plane. Because of the different adsorption energies on various planes, the growth of defective (110) plane is suppressed, leading to the formation of (h00) plane-oriented film. Finally, the all-inorganic CsPbBr 3 PSC passivated by ionic liquid EMImCl delivers the best efficiency of 10.71% with an open-circuit voltage up to 1.650 V. This work provides an in-depth insight into defect formation and passivation mechanism to stabilize perovskite photovoltaics.
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高影响因子
Energy Storage Materials
·
2023
·
IF 20.4
Yunjing Cao,Nan Li,Kai Yuan,Na Li,Wujiu Zhang,Shiyu Liang,Zhidong Hou,Da Lei,Ting Jin,Jian-Gan Wang,Keyu Xie,Chao Shen
Ni-rich (Ni≥0.8) LiNi x Co y Mn 1− x −y O 2 (NCM) cathode materials have attracted great interest for high-energy-density lithium ion batteries (LIBs). However, layered oxides of Ni-rich CAMs are suffering from the notorious structural and interfacial degradation in the liquid electrolyte , especially at high state-of-charge (voltage) and temperature, which leads to electrochemical performance deterioration and thermal runaway of the cell. This work systematically and comprehensively reveals the underlying mechanism of the electrolyte additive phenyl trifluoromethyl sulfide (PTS) to enhance the electrochemical property of Ni-rich layered oxides at high voltage (∼4.6 V) and high-temperature (∼50 °C). Specifically, PTS observably encourages the electrode stability via cathode-electrolyte interface strengthening and reactive oxygen species deactivating mechanism, which facilitates the NCM811 cathode to adapt to the deep charging state as well as the highly oxidized environment. The binding energy calculation results reveal that the superoxide radical could steadily adsorb on the S radical or Li + sites by interacting with Li + , thus making the superoxide radical deactivated. With the interface strengthening of PTS, the Ah-level NCM811||Gr pouch cell exhibits excellent cycling stability. This work affords a guide to designing electrolytes for Ni-rich LIBs towards high-voltage and high-temperature.
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Advanced Healthcare Materials
·
2023
·
IF 10
Bijun Zhu,Jiangjiexing Wu,Tong Li,Songtao Liu,Junheng Guo,Yijun Yu,Xinyi Qiu,Yue Zhao,Haoran Peng,Jinli Zhang,Leiying Miao,Hui Wei
The use of oxidoreductase nanozymes to regulate reactive oxygen species (ROS) has gradually emerged in periodontology treatments. However, current nanozymes for treating periodontitis eliminate ROS extensively and non-specifically, ignoring the physiological functions of ROS under normal conditions, which may result in uncontrolled side effects. Herein, using the MIL-47(V)-F (MVF) nanozyme, which mimics the function of glutathione peroxidase (GPx), we propose that ROS can be properly regulated by specifically eliminating H 2 O 2 , the most prominent ROS. Through H 2 O 2 elimination, MVF contributes to limiting inflammation, regulating immune microenvironment, and promoting periodontal regeneration. Moreover, MVF stimulates osteogenic differentiation of periodontal stem cells directly, further promoting regeneration due to the vanadium in MVF. Mechanistically, MVF regulates ROS by activating the Nrf2/HO-1 pathway and promotes osteogenic differentiation directly through the PI3K/Akt pathway. We present a promising periodontitis therapy strategy using GPx-mimicking nanozymes through their triple effects of antioxidation, immunomodulation, and bone remodeling regulation, making nanozymes an excellent tool for developing precision medicine. This article is protected by copyright. All rights reserved
研究领域:
牙科学
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纳米技术
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再生医学
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免疫学
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生物化学
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PubMed
高影响因子
Journal of Biobased Materials and Bioenergy
·
2017
·Vol. 11
·期 5
·505-509
·
IF 0.975
Pan Shaobing,Qiu Fengxian,Ping Zhang,Geng Rong,Xu Xueqin,Huang Tongxing,Ma Yichen,Yang Jiahui,Li Houzhi
Objectives: This paper focuses on comparing the micronucleus effect and evaluating genotoxicity of nano-zinc oxide and bulk-zinc oxide based on V. faba. root tip cells. Methods: The different concentration of nano-ZnO and bulk-ZnO suspensions are used as mutagens,
meanwhile, the paper calculates the micronucleus permillage of V. faba. root tip cells exposed by different treatment liquid. Results: 1. Both nano-ZnO and bulk-ZnO suspensions can induce higher micronucleus permillage. The micronucleus permillage induced by different concentration
of nano-ZnO and bulk-ZnO are all higher than the negative control group. The significance comparison of micronucleus permillage between bulk-ZnO and negative control group is significant (p < 0.05) and the significance comparison between nano-ZnO and negative control group is extremely
significant (p < 0.01), both of difference comparison have statistical significance. 2. The micronucleus permillage which is induced by nano-ZnO is higher than bulk-ZnO on the equal concentration. The significance comparison of them is extremely significant (p < 0.01),
the comparison has statistical significance. The genotoxicity to V. faba. root tip cells of nano-ZnO is higher than bulk-ZnO. 3. It has stronger operability and scientificalness that we use the optimized micronucleus test technique of V. faba. root tip cells to evaluate genotoxicity
of manufactured nanomaterials.
研究领域:
遗传学
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毒理学
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环境科学
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Journal of Physical Chemistry C
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2012
·
IF 4.805
Bang-Jing Zhu,Xin-Yao Yu,Yong Jia,Fu-Min Peng,Bai Sun,Mei-Yun Zhang,Tao Luo,Jin-Huai Liu,Xing-Jiu Huang
Iron and 1,3,5-benzenetricarboxylic (Fe–BTC) metal–organic coordination polymers are synthesized via a simple solvothermal method. The as-synthesized Fe–BTC polymers exhibit gel behavior, which is stable in common organic solvents or in water. The Fe–BTC polymer as an adsorbent for arsenic removal from water is tested. The kinetics and thermodynamics of arsenic adsorption by the Fe–BTC polymer in aqueous solution are investigated comprehensively. The effect of pH on the adsorption is also investigated. Kinetic studies show that the kinetic data are well described by the pseudo-second-order kinetic model. The thermodynamic analysis indicates that the adsorption is spontaneous. The adsorption isotherms can be well described with the Langmuir equation. The Fe–BTC polymers show relatively high arsenic adsorption capacity, more than 6 times that of iron oxide nanoparticles with a size of 50 nm and 36 times that of commercial iron oxide powders. Hence, the as-synthesized Fe–BTC polymers possess relatively high stability and better adsorption characteristic than nanomaterials simultaneously. It also can be considered as a new method to conquer the dilemma between the excellent properties from nanoscale effect and the aggregation of small size particles in the adsorption application of nanoparticle materials.
研究领域:
环境科学
·
材料科学
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Mei Wang,Yingkuan Sun,Wei Shang,Yaqian Liu,Liying Jiang
Herein, a cost-effective and user-friendly electrochemical sensor was fabricated via a straightforward surface functionalization strategy using L-cysteine-functionalized NiFe 2 O 4 @NiCoFe LDH/MLG nanocomposites, specifically designed for on-site screening of Pb 2+ in Class III-V surface waters. The fabrication process involved the in-situ one-step hydrothermal growth of NiFe 2 O 4 @ternary NiCoFe layered double hydroxide (LDH) nanomaterials on a multilayer graphene (MLG) scaffold, followed by functionalization with L-cysteine (L-Cys) to yield the Cys/NiFe 2 O 4 @NiCoFe LDH/MLG/SPE sensor. Benefiting from the excellent electrical conductivity of MLG, the synergistic enhancement effect of the ternary LDH, and the multiple coordination active sites of L-Cys, the as-prepared sensor exhibits reliable sensing performance for Pb 2+ detection. Under optimal conditions, the sensor achieved a linear dynamic range of 0.1–3 mg/L and a limit of detection (LOD) of 30 μg/L, which is sufficient to discriminate Pb 2+ concentrations exceeding the regulatory threshold for Class III surface water (50 μg/L, GB 3838–2002). The sensor also demonstrated excellent selectivity against common coexisting ions (Co 2+ , Fe 3+ , Cu 2+ , and Zn 2+ ) and satisfactory repeatability (RSD = 4.42%). In real water sample analysis, recoveries ranged from 94.1% to 113%, confirming its practical applicability. Overall, the Cys/NiFe 2 O 4 @NiCoFe LDH/MLG/SPE composite electrode offers a cost-effective, robust, and operationally simple analytical platform, showing great promise for rapid on-site risk-level screening of Pb 2+ contamination in heavily impacted surface waters, particularly in resource-limited regions.
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
·
IF 12.2
Huiling Deng,Xishi Chen,Ruijuan Gao,Hao Lin,Yang Zhu,Ren-shan Ge,Jing Cheng
Abstract Dialkyldimethylammonium chemicals (DDAs) are quaternary ammonium disinfectants. However, their effects on progesterone synthesis in placentas remain unclear. This study aims to study structure–activity relationship (SAR) and mechanism of DDAs (C2–C18) as inhibitors of human (3β-HSD1) and rat (3β-HSD4) placental 3β-hydroxysteroid dehydrogenase/Δ5-Δ4 isomerase (3β-HSD), a key enzyme in progesterone synthesis. DDAs exhibited a distinct V-shaped SAR to inhibit 3β-HSD, which was dependent on alkyl chain length. The inhibitory potency peaked with the C12 analogue, demonstrating the highest potency in human (IC50 = 4.78 μM) and rat (IC50 = 2.08 μM) assays. Conversely, a significant reduction in activity was observed with the C18 analogue, as evidenced by the substantially higher IC50 values (human: 19.1 μM; rat: 18.68 μM). Kinetic analyses confirmed mixed/noncompetitive mechanisms via NAD+/steroid interface binding, supported by molecular docking and 3D-QSAR pharmacophores highlighting hydrophobic interactions. Cellular assays in JAr cells demonstrated reduced progesterone secretion. Network toxicology analysis identifies human 3β-HSD1 as a central hub within a pathogenic network for recurrent spontaneous abortion, suggesting its dysregulation to disrupted progesterone metabolism and key signaling pathways. These findings propose DDAs as novel placental 3β-HSD inhibitors, with implications for endocrine-disrupting effects.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·
IF 6.3
Decheng Kong,Zhanhui Peng,Qizhen Chai,Yuanhao Wang,Di Wu,Lingling Wei,Pengfei Liang,Zupei Yang,Xiaolian Chao
In recent years, there have been many significant breakthroughs in the research of potassium sodium niobate (KNN) based piezoelectric ceramics, positioning them as promising candidates for high-temperature piezoelectric device applications. To achieve synergistic optimization of high piezoelectric performance and high Curie temperature, the composition was designed to lie within the orthorhombic-tetragonal (O-T) phase coexistence region at room temperature by regulating the K/Na ratio, while the overall lattice stability was preserved. Our results show that the 0.96(KₓNa 1-x )(Nb 0.98 Sb 0.02 )O 3 -0.04Bi 0.5 Li 0.5 HfO 3 ceramic at x = 0.48 exhibits a high inverse piezoelectric constant of ~1383 pm/V and a strain of 1.32%, which are primarily attributed to the reduced polarization switching barrier enabled by the O-T phase coexistence at room temperature. Meanwhile, the local structural heterogeneity introduced by Sb 5+ and Hf 4+ doping further enhances the electrical strain response. Notably, the ceramic maintains a high Curie temperature of 276 °C, governed by the intrinsic lattice stability without significant compromise, confirming its great potential for high-temperature piezoelectric device applications.
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高影响因子
Journal of Energy Chemistry
·
2026
·
IF 15.6
Zhiwei Li,Lei Wang,Li Fu
Engineering interatomic orbital hybridization to mediate the dynamic coupling of interfacial charge transfer and surface oxygen evolution remains a challenge in boosting the photoelectrochemical (PEC) water oxidation performance. Herein, a three-dimensional nanoporous network heterostructure of BiVO 4 /LaCoO 3 is fabricated by decorating BiVO 4 with LaCoO 3 perovskite single-crystalline quantum dots (PSC QDs). The enhanced interfacial built-in electric field in band-matched BiVO 4 /LaCoO 3 sharpens band bending, providing the driving force for interfacial charge transfer. Experiments and theoretical calculations reveal that V(3 d )-O(2 p )-Co(3 d ) synergistic orbital hybridization at BiVO 4 /LaCoO 3 interface provides a low-barrier hopping pathway for electron transitions, strengthens Co-O covalency, and optimizes the Co d -band center position. Co–O antibonding/bonding states shifting toward the Fermi level and Co 3+ -O 2− -Co 4+ double exchange facilitate efficient electron-hole separation, which regulate the electronic structure for BiVO 4 /LaCoO 3 . The BiVO 4 /LaCoO 3 photoanode achieves an enhanced photocurrent density of 4.19 mA cm −2 (vs. 2.01 mA cm −2 for BiVO 4 at 1.23 V vs. RHE). Meanwhile, online electrochemical test presents that the LaCoO 3 coupling on BiVO 4 provides rich active sites for the oxygen evolution reaction (OER), promoting the hole relaxation dynamics. Bridge-mediated coupling of charge transfer and photocatalytic oxidation via V(3 d )-O(2 p )-Co(3 d ) synergistic orbital hybridization is kinetically favorable, thus synergistically improving the PEC performance for BiVO 4 /LaCoO 3 . This work offers a valuable insight into the mechanism of interfacial charge transfer and OER during the PEC process. The built-in electric field in band-matched BiVO 4 /LaCoO 3 and V(3 d )-O(2 p )-Co(3 d ) synergistic orbital hybridization at BiVO 4 /LaCoO 3 interface provide a low-barrier hopping pathway for electron transitions, which is favorable for the fast OER. Download: Download high-res image (270KB) Download: Download full-size image
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Qiqiang Zhang,Lei Cao,Bo Peng,Hui Zhang,Xingyuan San,Yanchun Zhou,Man Jiang,Qingguo Feng,Chunfeng Hu
MAX phase ceramics, as a family of ternary layered ceramics, have received a lot of attention in the past decade due to their potential as precursors for two-dimensional transition metal carbides. However, due to complex multi-component metallurgical reactions, multicomponent MAX phase ceramics have always faced difficulties in purification and homogenization. This paper identifies a new strategy for synthesizing multicomponent MAX phase ceramics that can eliminate these synthesis difficulties. This path utilizes low-temperature (below 1000°C) stable Ti 2 AlC and carbide powder as initial materials to simplify complex multi-component reactions into a one-step reaction, successfully achieving high purity and precise doping ratio. As an example, four novel doped MAX phase ceramics, Ti 2 MAlC 2 (M = Nb, Ta, W) and Ti 2 HEAlC 2 (HE = 1/7Ti, 1/7V, 1/7Zr, 1/7Nb, 1/7Hf, 1/7Ta, 1/7 W) were successfully synthesized using this method. This dynamic-based design, on one hand, simplifies the reaction mechanism to make purification easier, and on the other hand, the concentrated release of entropy during the reaction process promotes phase transition and related element homogenization.
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产品关联
DOI
高影响因子
Science China-Materials
·
2025
·
IF 7.4
Zhang Na,Xu Ziwei,Yang Zhou,Zhang Lu,Fan Zihao,Xu Dongfang,Wang Fei,Yuan Ningyi,Ding Jianning,Cui Jian,Liu Zhike
Inorganic perovskite solar cells (IPSCs) have garnered significant research interest in recent years owing to their excellent light and thermal stability, as well as their potential applications in tandem solar cells. However, the power conversion efficiency (PCE) and stability of IPSCs are often compromised by residual lattice stress and numerous defects at interfaces and within the bulk material, which lead to severe nonradiative recombination of photogenerated carriers. To address these challenges, we developed a zero-dimensional supramolecular complex, (ETP) 2 SbCl 5 , serving as both a dual interface and bulk modifier to regulate the growth of inorganic CsPbI 3 perovskite films. The (ETP) 2 SbCl 5 modifier exhibits a unique spatial distribution: the ETP + cations preferentially anchor at the buried interface, passivating defects on both TiO 2 and perovskite surfaces, while Sb 3+ and Cl − ions diffuse into the perovskite bulk during annealing, effectively relieving residual lattice stress. Moreover, Cl − anions accumulate on the top surface of the CsPbI 3 film, passivating cation defects. Consequently, the (ETP) 2 SbCl 5 -modified CsPbI 3 IPSC achieves a high-quality active layer with significantly reduced defects and suppressed energy loss, an impressive PCE of 21.71% and a high open circuit voltage of 1.27 V, remaining 97.4% of their initial efficiency after 500 h of continuous maximum power point (MPP) tracking.
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Wenjie Yuan,Jinlong Liao,Songde Huang,Dakun Song,Qinting Su,Cuihua Li,Jinhua He
Solid lithium metal batteries with solid polymer electrolytes have advantages in terms of high energy density and safety. However, their application is still hindered by unstable solid electrolyte interfaces (SEI and CEI) and uncontrolled dendrite growth. Here, a composite skeleton loaded with dielectric filler yttrium stabilized zirconia nanoparticles (YSZ) on the surface of PVDF-HFP nanofiber filaments is designed, and a novel composite solid electrolyte (CSE) is prepared by in-situ polymerization of DOL (1,3-dioxolane) on this framework to achieve safe and stable high-voltage lithium metal battery (LMB). The dual stable electrode interfaces (CEI and SEI) constructed by in-situ can effectively suppress the generation of lithium dendrites and suppress the degradation of the high-voltage NCM811 positive electrode structure and the generation of cracks in NCM811 particles, endowing the battery with extraordinary performance. The as-obtained CSE exhibits high ionic conductivity of 1.01 × 10 −3 S cm −1 at 30 °C, the enlarged electrochemical window of 6.0 V, and the Li + transference number is 0.72. The assembled Li|NCM811 battery is capable of stable cycling for 400 cycles at a cut-off voltage of 4.5 V and current density of 1C, with a capacity decay of only 0.074 % per cycle. .
研究领域:
材料科学
·
电化学
·
能源存储
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高影响因子
危险品化学品经营许可证（带存储）