SOLAR ENERGY
·
2019
·
IF 4.674
Jiang He,Tianhui Li,Xueping Liu,Hang Su,Zhiliang Ku,Jie Zhong,Fuzhi Huang,Yong Peng,Yi-Bing Cheng
In this research, we investigated the influence of phase transition in four standard perovskite materials on the device stability under thermal cycling (TC) condition, which is listed in International Electrotechnical Commission (IEC) stability tests criteria. The evolution of morphology, phase structure and charge carrier dynamics of four type perovskite materials throughout thermal cycling were analyzed. It was found that the cubic to tetragonal phase transition of MAPbI 3 caused the quick degradation of the device, the α to δ phase transition in FAPbI 3 and FA 0.6 MA 0.4 PbI 3 resulted in sustained efficiency loss, while the FA 0.9 Cs 0.1 PbI 3 was more stable compared to above three perovskites under the same test condition. The FA 0.9 Cs 0.1 PbI 3 device retained nearly 88% of its initial efficiency after 200 temperature cycles between −30 °C and 85 °C, which could be ascribed to its successful stabilization of perovskite structure.
研究领域:
材料科学
·
光伏技术
·
物理化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xinlei Gan,Jing Zhang,Yanjun Xing,Xuefeng Peng,Yinxia Han,Qiuxiang Wang,Jiaxing Xiong,Xiaohui Liu,Like Huang,Weiping Li,Qidong Tai,Yuejin Zhu
Air-processed perovskite solar cells (PSCs) with high photoelectric conversion efficiency (PCE) can not only further reduce the production cost but also promote its industrialization. During the preparation of the PSCs in ambient air, the contact of the buried interface not only affects the crystallization of the perovskite film but also affects the interface carrier transport, which is directly related to the performance of the device. Here, we optimize the buried interface by introducing 3-mercaptopropyltrimethoxysilane (MPTMS, (CH3O)3Si(CH2)3SH) on the nickel oxide (NiOx) surface. The crystallization of the perovskite film is improved by enhancing surface hydrophobicity; besides, the SH-based functional group of MPTMS passivates the uncoordinated lead at the interface, which effectively reduces the defects at the bottom interface of perovskite and inhibits the nonradiative recombination at the interface. Moreover, the energy level between the NiOx layer and the perovskite layer is better matched. Based on multiple functions of MPTMS modification, the open circuit voltage of the device is obviously improved, and efficient air-processed methylamine-free (MA-free) PSCs are realized with PCE reaching 21.0%. The device still maintains the initial PCE of 85% after 1000 h aging in the glovebox. This work highlights interface modification in air-processed MA-free PSCs to promote the industrialization of PSCs.
研究领域:
材料科学
·
能源技术
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 16
·9817-9829
·
IF 10.7
Liwei Hou,Xinyue Xu,Xiaoli Wang,Li Wang,Fengchun Tian,Yi Xu
In this paper, we propose a composite nano-microstructure comprising Ti3C2 and nanogold as a surface-enhanced Raman spectroscopy (SERS)-active substrate for the highly sensitive sensing of amine gases. The adsorption performance of Ti3C2 was tested by a quartz crystal microbalance (QCM) sensor. Excellent adsorption ability of Ti3C2 was observed for aniline, phenylenediamine, and diethylamine, with adsorption amounts exceeding 2210, 1740, and 970 ng cm−2, respectively. The synergistic effect of the electromagnetic properties of Ti3C2 and nano-Au in the Ti3C2/nano-Au composite nanostructures was verified by finite-difference time-domain simulation. Partial chemical enhancement between Ti3C2 and aniline was verified by photocurrent tests. To achieve assay specificity, mercaptoacetaldehyde (MA) was adopted as a recognition probe. The Schiff base reaction between aldehyde groups and amino groups produces the –CN– bond, with the Raman characteristic peak at 1635 cm−1, enabling precise amine identification with the SERS chip. To obtain the Ti3C2/nano-Au@MA SERS sensing chip, nano Au was deposited on an indium tin oxide substrate using the chronoamperometric method, followed by nano-Au aldolization modification through Au-SH interactions and the spin-coating of a Ti3C2 film layer. Due to the high affinity of Ti3C2 for amine molecules and the low SERS background signal of MA and Ti3C2, the SERS spectra could be used for ultra-sensitive detection of amines. Three amine gases, i.e. aniline, p-phenylenediamine, and diethylamine, were detected quantitatively using the intensity ratiometric method on the functionalized Ti3C2/nano-Au@MA SERS sensor chip. The detection limits were 1, 1, and 20 parts per billion, respectively. By identifying the characteristic fingerprint peaks and comparing the relative intensity of the –CN– characteristic peak, quantitative analysis of the components of aniline and p-phenylenediamine mixed gas was accomplished. These findings demonstrate that the Ti3C2/nano-Au@MA SERS sensor chip offers a promising approach for the detection of amine gas molecules and holds potential for applications in environmental monitoring, disease diagnosis, and chemical analysis.
研究领域:
材料科学
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分析化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shasha Wei,Yayun Zheng,Jianfeng Liu,Jitao Shang,Fei Lv,Tong Yang,Zhaofu Zhang,Yan Xiong,Qiu He,Yan Zhao
To address the severe challenges of sluggish reaction kinetics and shuttle effects in lithium-sulfur (Li–S) batteries, this study ingeniously employed an efficient microwave-assisted (MA) strategy to rapidly synthesize the MXene–NiSe 2 @C (denoted as MA MX–NiSe 2 @C) heterostructure, serving as a sulfur host material. This method offered key benefits such as rapid and uniform heating, along with high energy efficiency. Theoretical simulations validated that the MXene–NiSe 2 heterostructure interface promoted the electron transfer processes, enhanced polysulfides adsorption, catalyzed the multi-step reduction of sulfur, and significantly reduced the energy barrier for Li 2 S decomposition. Electrochemical experiments demonstrated that MA MX–NiSe 2 @C notably improved Li–ion diffusion kinetics, accelerated sulfur redox reactions, and effectively mitigated shuttle effects. As a result, Li–S batteries based on the MA MX–NiSe 2 @C cathode exhibited a high initial capacity of 1222 mA h·g −1 at 0.1C, enhanced rate performance of 619 mA h·g −1 at 2C, and remarkable cycling stability. Even after 1000 cycles at a high 2C rate, the average capacity decay rate per cycle remained at only 0.054 %. This efficient synthesis method for MXene–transition metal selenide electrocatalysts, coupled with a thorough investigation of their adsorption and catalytic mechanisms in the intricate multiphase electrochemical reactions of Li–S batteries, provides strong support for the ongoing advancement of Li–S battery technology.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-10
·
IF 15.7
Liu Hong,Yu Yu,Bai Ye,Yang Yingchen,Wang Yaoxuan,Li Woyuan,Li Longhua,Hao Jinhui,Shi Weidong
The electrocatalytic reduction of carbon dioxide (CO 2 RR) to ethanol (C 2 H 5 OH) represents notable research significance and commercial value in large-scale chemical production. However, the limited selectivity for C 2 H 5 OH and the uncontrollable changes in active sites during reaction process restrict the ability of catalyst to achieve stable and efficient CO 2 RR to C 2 H 5 OH at industrial current density. Here, we report a system that immunizes the reconstruction of catalytic active sites, where the CuAg catalytic centers are protected by nitrilotriacetic acid (NTA). Importantly, the constructed CuAg@NTA catalyst exhibits low barriers for C-C coupling and hydrogenation of *CH 2 CHO to *CH 3 CH 2 O. Consequently, the catalyst achieves a high ethanol faradaic efficiency (FE C2H5OH ) of 87.21% with a partial current density of −218.03 mA cm −2 . Furthermore, the catalyst maintaining over 70% of FE C2H5OH after 300 h at −250 mA cm −2 , which are leading among previously reported catalysts in the selectivity and stability of CO 2 RR to C 2 H 5 OH at industrial current density. This study provides insights into the selectivity and stability enhancement of catalysts for electrocatalytic CO 2 RR to C 2 H 5 OH.
研究领域:
电催化
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能量转换
·
材料科学
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化学工程
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9
Mengjie Qian,Zhiguo Yan,Man Xu,Cunwen Wang,Yanbo Li
Synthesis of nanofiltration membranes with antifouling performance using simple and green methods is crucial for nanofiltration membrane development. This work presents a novel type of poly (methyl vinyl ether- alt -maleic anhydride) (PMVE-MA) based composite nanofiltration membrane with promising anti-fouling performance. The membranes were synthesized by co -depositing mixed solutions of PMVE-MA and amino silane coupling agents on porous polyethersulfone (PES) supports, followed by thermal annealing. The selective layer was formed on the PES support through nucleophilic addition of amines to anhydrides, coupling with silane hydrolysis-condensation under acid catalysis. The performance of the membranes was adjusted by controlling the concentration of PMVE-MA, the concentration of sulfuric acid, and the mass ratio of PMVE-MA to amino silane coupling agents. Under an optimal condition, a tight (PMVE-MA)-APTES/PES membrane with water permeance of 7.9 L m −2 h −1 bar −1 and a MWCO of 330 Da was obtained. The rejection of Na 2 SO 4 of the membrane reached 92 %. The anti-fouling test under filtration of bovine serum protein (BSA) showed the membrane had a high-water flux recovery rate of 99.3 %, indicating an excellent antifouling performance. This work highlights the potential of using PMVE-MA as a material for antifouling nanofiltration membrane design.
✓ 已验证
产品关联
DOI
高影响因子
NEUROCHEMICAL RESEARCH
·
2022
·Vol. 47
·期 12
·3761-3776
·
IF 4.414
He Junhui,Li Dongmei,Wei Jie,Wang Sheng,Chu Shifeng,Zhang Zhao,He Fei,Wei Dongmei,Li Yi,Xie Jiaxiu,Lai Kedao,Chen Naihong,Wei Guining
Depression has become an important disease threatening human health. In recent years, the efficacy of Traditional Chinese Medicine (TCM) in treating the disease has become increasingly prominent, so it is meaningful to find new antidepressant TCM. Mahonia fortune (Lindl.) Fedde is a primary drug in traditional formulas for the treatment of depression, and alkaloids are the main components of it. However, the detailed mechanism of Mahonia alkaloids (MA) on depression remains unclear. This study aimed to investigate the effect of MA on gap junction function in depression via the miR-205/Cx43 axis. The antidepressant effects of MA were observed by a rat model of reserpine-induced depression and a model of corticosterone (CORT)-induced astrocytes. The concentrations of neurotransmitters were measured by ELISA, the expression of Connexin 43 (Cx43) protein was measured by Immunohistochemistry and western-blot, brain derived neurotrophic factor (BDNF), cAMP-response element binding protein (CREB) proteins were measured by western-blot, the pathological changes of prefrontal cortex were observed by hematoxylin–eosin (H&E) staining. Luciferase reporter assay was performed to verify the binding of miR-205 and Cx43. The regulation effect of Cx43 on CREB was verified by interference experiment. Gap junction dysfunction was detected by fluorescent yellow staining. The results confirmed that MA remarkably decreased miR-205 expression and increased Cx43, BDNF, CREB expression in depression rat and CORT-induced astrocytes. In addition, after overexpression of miR-205 in vitro, the decreased expression of Cx43, BDNF and CREB could be reversed by MA. Moreover, after interfering with Cx43, the decreased expression of CREB and BDNF could be reversed by MA. Thus, MA may ameliorate depressive behavior through CREB/BDNF pathway regulated by miR-205/Cx43 axis. Graphical Abstract
研究领域:
药理学
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神经科学
·
分子生物学
·
中药
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2019
·
IF 2.961
Yan Hua,Daocheng Hong,Sushu Wan,Yanyu Lei,Mingcai Xie,Weiqing Yang,Yu Du,Yuxi Tian
2D perovskite materials have attracted increasing attention in the last few years due to their optical tunability. However, how to control the structure of these materials is still one of the key challenges. In this work, by using photoluminescence microscopy and XRD characterization, we found that ethanol treatment can induce the reorganization of the crystal structure of 2D perovskite materials. The ethanol molecules can insert into (OA) 2 (MA)Pb 2 I 7 (OA = CH 3 (CH 2 ) 7 NH 3 ; MA = CH 3 NH 3 ) crystal lattice and preferentially dissolve MA ions reducing the MA/OA ratio. During the recrystallization, new (OA) 2 PbI 4 phase forms due to the low MA/OA ratio. On the other hand, adsorption of ethanol can induce the photoluminescence (PL) enhancement by passivation of the surface defects . Consequently, PL intensity increases and decreases as the activation/deactivation of the quenching defects. These results provide a possible way to optimize the crystal structure of 2D perovskite under mild condition.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
Genes & Genomics
·
2022
·Vol. 44
·期 11
·1375-1384
·
IF 2.164
Wang Yazhuo,Ren Yanan,Li Na,Zhao Jing,Zhao Sufen
Background Rab11a is a novel identified tumorigenic factor involved in different cancers. Objective This study aimed to assess the biological function of Rab11a in ovarian cancer (OC). Methods GEPIA database and real-time PCR were used to determine Rab11a expression in OC tissues and normal ovarian tissues. CCK-8, cell cycle, wound healing, transwell, and enzyme linked immunosorbent assay were used to detect the effects of Rab11a knockdown or overexpression on the proliferation, migration, and invasion of OC cells. Western blot analysis of autophagy-related markers and immunofluorescence staining of LC3 were performed to determine autophagy induction in Rab11a-silenced or overexpressed OC cells. Moreover, autophagy inhibitor 3-MA was employed to clarify the effects of Rab11a-regulated autophagy on the malignant phenotypes of OC cells. Results The mRNA level of Rab11a was increased in tumor tissues from OC patients as compared to the normal ovarian tissues. Knockdown of Rab11a in OVCAR-3 cells inhibited the growth of OC cells and led to cell cycle arrest, accompanied by reduced expression of PCNA and Cyclin D1. Rab11a deficiency suppressed migration and invasion of OC cells, accompanied by decreased secretion of MMP-2 and MMP-9. Silence of Rab11a impeded autophagy induction, as evidenced by decreased LC3 puncta formation, reduced abundance of LC3II and Beclin1, and increased p62 protein expression. In contrast, the ectopic expression of Rab11a in A2780 cells exerted opposite effects. Interestingly, autophagy inhibitor 3-MA abolished the effects of Rab11a overexpression on autophagy, proliferation, migration, and invasion. Conclusions Rab11a promotes the malignant phenotypes of OC cells by inducing autophagy.
研究领域:
肿瘤学
·
细胞生物学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Healthcare Materials
·
2017
·Vol. 6
·期 9
·1601252
·
IF 5.11
Shasha Zhu,Jiqian Zhang,Li Zhang,Wentao Ma,Na Man,Yiming Liu,Wei Zhou,Jun Lin,Pengfei Wei,Peipei Jin,Yunjiao Zhang,Yi Hu,Erwei Gu,Xianfu Lu,Zhilai Yang,Xuesheng Liu,Li Bai,Longping Wen
The possible adverse effects of engineered nanomaterials on human health raise increasing concern as our research on nanosafety intensifies. Upon entry into a human body, whether intended for a theranostic purpose or through unintended exposure, nanomaterials tend to accumulate in the liver, leading to hepatic damage. A variety of nanoparticles, including rare earth upconversion nanoparticles (UCNs), have been reported to elicit hepatotoxicity, in most cases through inducing immune response or activating reactive oxygen species. Many of these nanoparticles also induce autophagy, and autophagy inhibition has been shown to decrease UCN-induced liver damage. Herein, using UCNs as a model engineered nanomaterial, this study uncovers a critical role for Kupffer cells in nanomaterial-induced liver toxicity, as depletion of Kupffer cells significantly exacerbates UCN-induced liver injury. Furthermore, UCN-induced prodeath autophagy in Kupffer cells, and inhibition of autophagy with 3-MA, a well-established chemical inhibitor of autophagy, enhances Kupffer cell survival and further abrogates UCN-induced liver toxicity. The results reveal the critical importance of Kupffer cell autophagy for nanoparticle-induced liver damage, and inhibition of autophagy may constitute a novel strategy for abrogating nanomaterial-elicited liver toxicity.
研究领域:
纳米技术
·
毒理学
·
肝病学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER
·
2024
·
IF 4.1
Chaoying Wang,Jiawei Wang,Zhong Xin
In this work, poly (acrylonitrile-methyl acrylate) [P(AN-MA)] copolymers with controllable molecular weights and narrow polydispersity were successfully synthesized in continuous flow without pre-deoxygenation. A dual-reactor method was designed to prepared P(AN-MA) with higher molecular weight and achieve a high yield from 62.57 % to 70.16 %. To facilitate industrial production of P(AN-MA), pre-mixing stage was added in continuous flow for replacing the ultrasonic mixing process. The characteristic mixing time is 27.80 min and the length of Polyfluoroalkoxy (PFA) tube exceeds 74.625 m for thoroughly mixing. Higher molecular weight P(AN-MA) copolymers possess poorer preoxidation properties such as higher initiation temperature, more concentrated heat release and larger activation energy of cyclization reaction as well as lower extent of stabilization and poorer thermal stability against high-temperature treatment. Moreover, 192 g P(AN-MA) was continuously prepared by the dual-reactor method for 105 min without suffering from notable pressure increase.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of the American Chemical Society
·
2025
·
IF 15.6
Wenjun He,Yueshuai Wang,Yilong Zhao,Cheng Tang,Linchuan Cong,Changli Wang,Yue Lu,Xin Liu,Juncai Dong,Serhiy Cherevko,Qingsong Hua,Qiang Zhang
Achieving stable and efficient alkaline water electrolysis (AWE) under fluctuating renewable energy inputs is essential for large-scale green hydrogen production. However, frequent shutdown-induced reverse current (RC) effects pose significant challenges to electrode durability. Here, we introduce a gradient interlayer engineering strategy to develop robust AWE electrodes that intrinsically resist both electrochemical reconstruction and mechanical fatigue. By constructing a dense interlayer with Ni(112̅)/Ni3S2(1̅20) heterointerfaces, the electrode demonstrates high catalytic activity (1.79 V @1000 mA cm–2─meeting the U.S. DOE 2026 target), excellent operational stability (>1500 h at 1000 mA cm–2 in 30 wt % KOH at 80 °C), and exceptional RC resistance for 3600 accelerated startup/shutdown cycles. Mechanistic studies through cross-sectional characterizations and theoretical calculations reveal that the seamless interlayer at the catalyst–substrate interface enhances interfacial adhesion, mitigates lattice mismatch, and facilitates charge redistribution, ensuring robust stability and integrity even under operational strains and potential reversals. This work establishes interface crystallography as a design paradigm for durable electrodes, potentially overcoming the stability–activity dilemma toward industrially relevant electrolyzers coupled with fluctuating renewable energy sources.
研究领域:
电化学
·
材料科学
·
氢能
·
可持续能源
·
催化
✓ 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）