RSC Advances
·
2022
·Vol. 12
·期 34
·21851-21858
·
IF 4.036
Nan Zhao,Lu Ren,Guangyi Du,Jing Liu,Xueqiu You
The rGO/CeO2/FTO nanocomposite modified electrode was prepared by an electrochemical method. A simple and highly sensitive electrochemical sensing platform for electrochemical rGO and modified CeO2 nanoribbons directly on FTO electrodes was developed. Simultaneous determination of Pb2+ and Cd2+ used the differential pulse anodic stripping voltammetry (DPASV) method. The method was simple to operate, and CeO2 nanobelts could be obtained simultaneously by electrodeposition and reduction of GO without further processing. This is an environmentally friendly electrochemical method to obtain modified electrodes under mild conditions. The experimental results showed that the linear calibration curves of Pb2+ and Cd2+ are 1–300 and 0.2–500 μg L−1, respectively. At the same time, no interference from other coexisting metal ions was found during the detection process, which proved that the modified electrode had good stability and repeatability.
研究领域:
环境科学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
LABORATORY INVESTIGATION
·
2024
·
IF 5.1
Rui Hou,Yadong Wang,Shiyao Cao,Xinrui Sun,Luo Jiang
High-grade serous ovarian cancer (HGSOC) remains the most lethal female cancer by far. Herein, clinical HGSOC samples had higher N 6 -methyladenosine (m 6 A) modification than normal ovarian tissue, and its dysregulation had been reported to drive aberrant transcription and translation programs. However, Kringle containing transmembrane protein 2 (KREMEN2) and its m 6 A modification have not been fully elucidated in HGSOC. In this study, the data from the high-throughput mRNA sequencing (RNA-seq) of clinical samples were processed using the weighted correlation network analysis (WGCNA) and functional enrichment analysis. Results revealed that KREMEN2 was a driver gene in the tumorigenesis of HGSOC and a potential target of m 6 A demethylase fat-mass and obesity-associated protein (FTO). KREMEN2 and FTO levels were upregulated and downregulated, respectively, and correlation analysis showed a significant negative correlation in HGSOC samples. Importantly, upregulated KREMEN2 was remarkably associated with lymph node (LN) metastasis, distant metastasis, peritoneal metastasis, and high FIGO stage (Ⅲ/Ⅳ), independent of the age of patients. KREMEN2 promoted the growth of HGSOC in vitro and in vivo , which was dependent on FTO. The methylated RNA immunoprecipitation-qPCR and RNA immunoprecipitation assays were performed to verify the m 6 A level and sites of KREMEN2. FTO overexpression significantly decreased m 6 A modification in 3'UTR and 5'UTR regions of KREMEN2 mRNA and downregulated its expression. In addition, we found that FTO-mediated m 6 A modification of KREMEN2 mRNA was recognized and stabilized by the m 6 A reader IGF2BP1 rather than IGF2BP2 or IGF2BP3. This study highlights the m 6 A modification of KREMEN2 and extends the importance of RNA epigenetics in HGSOC.
研究领域:
癌症生物学
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分子生物学
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表观遗传学
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肿瘤学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2020
·
IF 2.726
Dong Fang,Yu Tong,Futing Xu,Baoxiu Mi,Dapeng Cao,Zhiqiang Gao
This paper reports the preparation of CsSnBr 3 perovskite by solid-phase reaction, and studies its properties and perovskite solar cell (PSC). Our CsSnBr 3 film is testified as perovskite with good crystalline quality, uniform morphology and being stable in air for 8 days. The device structure, i.e., FTO/TiO 2 /CsSnBr 3 /MoO 3 /Al, is a never-reported structure for CsSnBr 3 based PSC with planar heterojunction and without both the traditional organic hole transport layer and the expensive gold back-electrode. The device exhibits power conversion efficiency of 1.5% with very small forward and reverse scanning hysteresis, which is usually severe in PSC devices. Besides, in the work-discussion, we provide a couple of scientific equations with references, which are quite informative and instructive for the study of perovskite crystalline and semiconductor thin-film/solar cell.
研究领域:
材料科学
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太阳能
·
光伏技术
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半导体物理
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Ziqiu Ren,Na Wang,Menghua Zhu,Xin Li,Jingyao Qi
The simple assembling process and lower manufacturing cost are crucial for wide application of perovskite solar cells. In this work, we report an efficient interface passivation strategy for preparing high-performance planar perovskite solar cells, which does not require well-controlled moisture and oxygen atmosphere. A NH 4 F solution-based additive is introduced to passivated TiO 2 electron transfer layer, which offers reduction of oxygen-induced defects and residual surface hydroxyl groups , and lower trap state level. Using a typical planar structure of FTO/NH 4 F-TiO 2 /CH 3 NH 3 PbI 3 /Spiro-OMeTAD/Au, the champion device achieves a power conversion efficiency of 15.61%. After 28-day durability test, the device with NH 4 F-treated TiO 2 storing in air without any encapsulation exhibits a little efficiency loss (<10%). Our work demonstrates a generic approach to develop air-processed efficient planar perovskite solar cells by interface engineering for future commercialization.
研究领域:
材料科学
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太阳能
·
电气工程
·
化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2016
·
IF 2.264
Xiao-Dong Qiao,Yi-Yi Liu,Guo-Lei Huang,Bing-Xin Lei,Wei Sun,Zhen-Fan Sun
We have proposed a novel engineered multifunctional photoanode which consists of one-dimensional (1D) TiO 2 nanotube arrays modified by TiO 2 nanoparticles as a bottom layer and three-dimensional (3D) TiO 2 submicrospheres as a top layer by a simple one-time chemical bath deposition method . This 1D-3D bilayer photoanode simultaneously possesses the incompatible features such as high specific surface area, pronounced light-scattering ability, and fast electron transport . The novel 1D-3D bilayer photoanode demonstrates a power conversion efficiency (PCE) of 6.93%, leading to a 26.5% increment of PCE compared with that of TiO 2 bare nanotube arrays (5.48%).
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Solar RRL
·
2024
·
IF 6
Chenxi Zhao,Bowen Liu,Fuyan Chen,Jiaxin Gao,Xinan Shi,Daocheng Pan
Cu(In, Ga)(S, Se) 2 (CIGSSe) solar cell is one of the most promising thin-film solar cells with a record power conversion efficiency (PCE) of 23.6%. Conventional CIGSSe thin-film solar cells are usually fabricated on Mo-coated soda-lime glass substrate, thereby, the sunlight on the rear side cannot be utilized by the monofacial CIGSSe solar cells owing to the opacity of the Mo electrode. CIGSSe solar cells fabricated on transparent conductive oxide (TCO) electrode enable to fabricate bifacial solar cells, which can generate power on both sides of solar cells, so that bifacial solar cells have a high potential application in building-integrated photovoltaics. However, the PCEs of CIGSSe solar cells fabricated on TCO substrates are significantly lower than those of ones on Mo substrates. In this article, bifacial CIGSSe solar cells on fluorine-doped tin oxide (FTO) substrate are fabricated by using an ionic liquid-assisted solution approach and utilizing a MoO 3 thin film as an interface layer between FTO and CIGSSe absorber layer, yielding a front-side PCE of 9.73% and a back-side PCE of 1.77%.
研究领域:
材料科学
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光伏技术
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可再生能源
✓ 已验证
产品关联
DOI
高影响因子
Journal of Physical Chemistry C
·
2017
·
IF 4.536
Qingqing Qiu,Shuo Li,Jingjing Jiang,Dejun Wang,Yanhong Lin,Tengfeng Xie
The growth of anatase TiO2 nanowires (NWs) on fluorine doped tin oxide (FTO) substrates through hydrothermal reaction has attracted wide attention and research, especially in the case of the solar cells. Actually, the built-in electric field at the anatase TiO2 NWs/FTO interface leads to the photoexcited holes transfer to FTO conductive substrates because the Fermi energy of anatase TiO2 NWs film is higher than that of FTO substrates. Yet efficient transport of photoexcited electron to the FTO conductive substrates is desirable. Hence, the built-in electric field at the pure TiO2 NWs/FTO interface has prevented anatase TiO2 NWs-based solar cells from achieving a higher photoelectric performance. In this work, we elaborately design and construct the N-doped anatase TiO2 NWs/FTO interface with the desirable orientations from FTO toward N-doped anatase TiO2 NWs, which favors the photoexcited electron transfer to the FTO conductive substrates. The surface photovoltage (SPV) and Kelvin probe measurements demostrate that the N-doped anatase TiO2 NWs/FTO interface favors the photoexcited electron transfer to the FTO conductive substrates due to the fact that the orientation of the built-in electric field at the N-doped TiO2 NWs/FTO interface is from FTO toward TiO2. The photoexcited charge transfer dynamics of CdS QD-sensitized TiO2 NWs and N-doped TiO2 NWs electrodes was investigated using the transient photovoltage (TPV) and transient photocurrent (TPC) technique. Benefiting from the desirable interface electric field, CdS-based quantum dot-sensitized solar cells (QDSCs) with the optimal N doping amount exhibit a remarkable solar energy conversion efficiency of 2.75% under 1 sun illumination, which is 1.46 times enhancement as compared to the undoped reference solar cells. The results reveal that the N-doped anatase TiO2 NWs electrodes have promising applications in solar cells.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Yue Lu,Xingxin Hu,Lin Tang,Bo Peng,Jin Tang,Taotao Zeng,XunkuoZhang,Qian Liu
The development of sustainable, low-cost and responsive technology for heavy metals detection in wastewater is crucial. In this study, by combining CuO/ZnO photocathode with microbial anode, a novel photo-microbial fuel cell (PMFC) sensor was developed. The self-powered PMFC was performed under light and dark condition for heavy metals detection. Compared with MFC sensor, PMFC sensor showed a wider detection range (0.1–4 mg L −1 of Cd 2+ and 10–80 mg L −1 of Cu 2+ ). The improved performance in sensing limit and sensitivity was mainly attributed to the intimate P–N heterojunctions formed in CuO/ZnO, which accelerated the electron transport between the photocathode and the microbial anode. Besides, the toxicity of five heavy metals tested in PMFC was shown as Cd 2+ >Cr 6+ >Zn 2+ >Hg 2+ >Cu 2+ . This study has taken advantage of the characteristics of PMFC and facilitated its application in heavy metals detection, which provides a new approach for the development of biosensors .
研究领域:
环境科学
·
生物技术
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2020
·
IF 7.216
Qingwei Zhou,Jialong Duan,Yudi Wang,Xiya Yang,Qunwei Tang
Tin dioxide (SnO 2 ) is generally regarded as a promising electron-transporting layer (ETL) for state-of-the-art perovskite solar cells (PSCs), however, the ubiquitous oxygen-vacancy-related defects at SnO 2 surface and the large energy difference between conduction band of SnO 2 and perovskite layer undoubtedly cause severe charge carrier recombination, resulting in sluggish charge extraction efficiency and non-negligible open-circuit voltage ( V oc ) loss. Herein, a chlorine-containing TiO x Cl 4-2 x accessory layer is fabricated by immersing SnO 2 layer into the TiCl 4 aqueous solution to passivate the surface oxygen-vacancy-related defects of SnO 2 layer and to set an intermediate energy level at ETL/perovskite interface in all-inorganic cesium lead tri-bromine (CsPbBr 3 ) PSCs. Furthermore, the TiO x Cl 4-2 x layer also improves the infiltration of SnO 2 layer surface toward perovskite precursor for high-quality perovskite film. Finally, the hole-free, all-inorganic CsPbBr 3 PSC with a structure of FTO/SnO 2 /TiO x Cl 4-2 x /Cs 0.91 Rb 0.09 PbBr 3 /carbon achieves a champion efficiency of 10.44% with a V oc as high as 1.629 V in comparison to 8.31% for control device. Moreover, the optimized solar cell presents good stability in 80% humidity in air.
研究领域:
材料科学
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太阳能
·
纳米技术
·
电化学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Niu Huang,Guowang Li,Zhifen Xia,Fang Zheng,Hua Huang,Wenjing Li,Changhua Xiang,Yihua Sun,Panpan Sun,Xiaohua Sun
A low-cost and efficient MoS 2 /graphite paper (GP) counter electrode for dye-sensitized solar cells (DSSCs) is first fabricated by a simple and effective solution processed route. Photo-electric conversion efficiency of 6.48% is obtained for the DSSC adopting MoS 2 /GP, better than the device (6.22%) employing platinized F-doped tin oxide (Pt/FTO) electrode. Because highly conductive GP is performed as a substrate, and the mechanical adhesion and electrical connection between the MoS 2 film and the GP substrate are strong, the series resistance of MoS 2 /GP is much smaller than that of Pt/FTO. A comparable charge transfer resistance of MoS 2 /GP to Pt/FTO is found to be another factor for the better performance. Due to the MoS 2 prepared here possessing relatively high crystallinity and firmly being anchored on the GP substrate, MoS 2 /GP as well exhibits high stability. Hence, excellent electrochemical activity, high stability, facile preparation and low material cost of the MoS 2 /GP electrode offer it a promising potential for large-scale production.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2017
·Vol. 185
·期 1
·1-6
·
IF 4.58
Liu Xing-Pei,Xie Xing-Li,Wei Yu-Ping,Mao Chang-jie,Chen Jing-Shuai,Niu He-Lin,Song Ji-Ming,Jin Bao-Kang
A film of perovskite-type LaFeO 3 nanoparticles (NPs) was deposited on fluorine-doped tin oxide (FTO) conducting glass via dipping-lifting and calcination. Scanning electron microscopy shows that the NPs are evenly distributed on the surface of the glass. The modified glass was further coated with antibody against human interleukin 6 (IL-6) to result in a photoelectrochemical immunosensor for IL-6. The well-established photoelectrochemical immunoassay has a linear current response in the range of 0.1 pg·mL −1 to 0.1 μg·mL −1 and a detection limit as low as 33 fg·mL −1 . Schematic of a novel photoelectochemical immunoassay for the measurement of IL-6 based on perovskite-type LaFeO3 nanoparticles. The immunoassay had a higher sensitivity and may also be applied to other bioanalysis and environment monitoring.
研究领域:
生物化学
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分析化学
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生物传感器
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免疫分析
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Peiling Yuan,Shengxi Wu,Pengwen Wu,Yu Zeng,Xiaotian Deng,Pengxiang Li,Doudou Xu
Preeclampsia constitutes a critical and severe complication of gestational hypertension in pregnant women. At present, there exists no effective treatment for preeclampsia, although placental growth factor (PlGF) has been identified as the most reliable predictive biomarker. Consequently, the accurate quantification of PlGF levels in the blood of pregnant women affected by preeclampsia is imperative. In this study, a microfluidic photoelectrochemical immunosensor based on ZnIn 2 S 4 /In 2 S 3 heterojunction photosensitive material was developed on fluorine-doped tin oxide (FTO) and integrated with microfluidic channels. This innovative platform enables the detection of PlGF, an eclampsia marker, in pregnant women. Following activation with chitosan (CTS) and glutaraldehyde (GA), the immobilized monoclonal antibody specific to PlGF forms a covalent bond with its corresponding antigen, and the interaction is detected through changes in photocurrent. The experimental results indicate that the proposed sensor exhibits a wide detection range of 0.1 pg mL⁻¹ to 1 µg mL⁻¹ for PlGF, with a limit of detection (LOD) of 0.0879 pg mL⁻¹ (S/N = 3). Additionally, the sensor demonstrates excellent specificity, stability, reproducibility, low sample consumption, and robust detection performance for clinical specimens. Therefore, this sensor holds significant promise as an auxiliary diagnostic tool for early screening of eclampsia-related conditions in pregnant women.
研究领域:
生物医学工程
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分析化学
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生物传感器
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纳米技术
·
妇产科学
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光电化学
·
微流控技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）