SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2021
·
IF 4.098
Lingling Zhang,Mengwen Yi,Shilong Zhong,Jing Liu,Xiangjun Liu,Tao Bing,Nan Zhang,Yongbiao Wei,Dihua Shangguan
Viscosity of cell microenvironment plays a significant role in maintaining the normal life activities of cells. Particularly, the abnormal viscosity in mitochondria is closely associated with lots of diseases and cellular dysfunctions. Herein, we developed a group of p-aminostyryl thiazole orange derivatives with different amino side chains. These probes showed good fluorescence response to viscosity with twisted intramolecular charge transfer mechanism, among them, the probes with diethylamino ( TOB ), dibutylamino ( TOC ) and pyrrolidin ( TOE ) side chains showed better response to the viscosity with 78-fold, 55-fold, and 88-fold fluorescence enhancement in 95% glycerol solution respectively. TOB , TOC , and TOE could enter live cells and mainly located in mitochondria. Treatment HeLa cells with nystatin, lipopolysaccharide or oleic acid caused significant fluorescence enhancement of these probes, suggesting the good potential for monitoring the variation of mitochondrial viscosity, as well as for investigating the related physiological process of inflammation and lipid metabolism.
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DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2019
·Vol. 48
·期 12
·4015-4025
·
IF 4.052
Haiyu Wang,Zhiliang Jin,Xuqiang Hao
The development of a highly active and stable non-noble-metal hydrogen-producing catalyst for renewable energy reserves and conversion remains a serious challenge. In this work, we described a novel binary solution (DETA/H2O) reaction for preparing a composite catalyst composed of CdS nanoparticles grown on CoSe2 nanobelts. The composite catalyst (CoSe2/CdSDETA) exhibits excellent catalytic activity for a hydrogen evolution reaction in an EY sensitized 15% (v/v) TEOA aqueous solution under visible light irradiation (λ ≥ 420 nm). Moreover, the catalytic activity of the P-doped sample (CoSe2/CdSDETA|P) was further improved. The excellent performance is ascribed to the synergy among DETA and atomic-level P-doping. Some essential characterization methods such as XRD, SEM, TEM, UV-vis diffuse spectroscopy, XPS, photoelectrochemistry, PL, etc. were carried out to support the related results and a possible reaction mechanism was put forward.
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DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2019
·Vol. 166
·期 4
·H87
·
IF 3.12
Jinnan Wu,Yuhan Zhu,Kai Yan,Jingdong Zhang
Redox active hexacyanoferrate (HCF) was immobilized on CdS-graphene (CdS-G) electrode to study the photovoltammetric behavior of p-phenylenediamine (PPD). Under visible light illumination, the immobilized HCF could quickly consume photogenerated carriers on CdS-G electrode and mediate the photoelectrocatalytic oxidation of PPD, leading to an enhanced anodic limiting current response. The HCF/CdS-G electrode fabricated with 1% graphene content in CdS-G composites and 0.3 mmol·L−1 K4[Fe(CN)6] was found to show the optimum photovoltammetric response to PPD. The fabricated HCF/CdS-G electrode was explored for photovoltammetric determination of PPD, which showed a current response linearly proportional to PPD concentration from 1.0 × 10−7 to 1.0 × 10−5 mol·L−1. The detection limit (3S/N) was 4.7 × 10−8 mol·L−1. Moreover, the HCF/CdS-G electrode displayed good reproducibility and high stability. The developed photovoltammetric method was successfully applied to the determination of PPD in environmental water samples.
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高影响因子
Advanced Materials Interfaces
·
2019
·Vol. 6
·期 12
·1900367
·
IF 4.713
Lun Cai,Wenxian Wang,Lei Jin,Zhirong Yao,Wenjie Lin,Lanxiang Meng,Bin Ai,Zongcun Liang,Yuelong Huang,Fuqin Zhang,Pietro P. Altermatt,Hui Shen
Most crystalline silicon (c-Si) solar cells are based on high temperature–processed p-n junctions or highly doped heterojunctions. The concept of dopant-free carrier selective contact has become a research hotspot and been successfully demonstrated with n-type Si wafers, showing the great potential of simplified fabrication process and lower thermal-consuming. However, there are few successful cases on p-Si, dopant-free p-Si/CdS (cadmium sulfide)/ITO (indium tin oxide) solar cells with champion efficiency of 12.29% (device area 4 cm 2 ) have been demonstrated with DC magnetron sputtered CdS thin films working as electron-selective contact. A proper annealing treatment is found essential in improving the p-Si/CdS/ITO heterocontact and device performance. The author's preliminary results confirm the feasibility of preparation of efficient p-Si wafer–based dopant-free solar cells.
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高影响因子
ACS Applied Electronic Materials
·
2019
·
IF 0
Weihao Wang,Qiufan Liao,Xiaoli Peng,Qiaoqi Lu,Zhao Li,Tao Zhang,Fengzhi Wang,Xinhua Pan,Yu-Jia Zeng,Zhizhen Ye
Tin monoxide (SnO) is a p-type semiconductor which is promising in field effect transistors (FETs) applications. However, nanostructure SnO has hardly been applied in FETs due to its stability issue. Herein, oleylamine protected Ag@SnO core–shell nanostructures have been synthesized by a hydrothermal method and configured as FETs. X-ray diffraction, Raman spectroscopy and X-ray photoelectron spectroscopy measurements are carried out to confirm the formation of pure phase SnO. The Ag@SnO core–shell single nanostructure FETs and thin film transistors are successfully fabricated on Si/SiO2 substrates. The doping of Ag in SnO and the formation of Schottky junction between SnO and Ag effectively improve the performance of FETs. The Ag nanowire (NW) core provides the unhindered carrier transport route, and the Schottky junction formed between Ag NW and SnO effectively constrains the leakage current. The nanostructure FETs show typical p-type characteristics with a premium on/off ratio (Ion/Ioff) of 3.3 × 105, a subthreshold swing of 0.09 V dec–1 and a high p-type field effect mobility (μFE) of 1.93 cm2 V –1 s –1. The excellent properties of Ag@SnO NWs FETs promise to be important for the next-generation p-type FETs.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Xin-Yu Huang,Zong-Tao Chi,Jian Liu,Dong-Hua Li,Xiao-Jun Sun,Cong Yan,Yu-Chong Wang,Hao Li,Xue-Dong Wang,Wan-Feng Xie
Heterostructured semiconductor materials, combining the collective advantages of individuals and synergistic properties, have spurred great interest as a new paradigm toward detecting of volatile organic compounds recently. Direct use of NiS as a sensing material is impractical because the structure of NiS is unstable, exhibiting an undesirable sensing performance. Herein, we firstly report its incorporation into an ethanol gas sensor with a conventional n -type sensitive material of In 2 O 3 , and the gas sensing performance of the NiS@In 2 O 3 nanocomposites has been significantly enhanced. Nanofiber-like NiS and In 2 O 3 were fabricated via a synergetic approach of electrospinning and calcination processes. The diameters of crystalline NiS and In 2 O 3 are about 150 nm and 120 nm, respectively. Then, the NiS@In 2 O 3 nanocomposites were prepared via re-calcination of as-prepared NiS and In 2 O 3 nanofibers. The results show that the sensor based on NiS@In 2 O 3 exhibits a detecting limit of as low as 5 ppm and a short response time of 8 s at the optimum temperature of 300 ºC, which outstripped that (13 s) of pristine In 2 O 3 and pure NiS sensors (21 s) for the detection of ethanol gas. The remarkable improvement of sensing performance can be attributed to the p - n heterojunction in multi-component phases of NiS and In 2 O 3 .
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Yongmei Xia,Zuming He,Kejun Hu,Bin Tang,Jiangbin Su,Ya Liu,Xiaoping Li
In order to further improve the photocatalytic activity, Cu 2 O coupled with SrTiO 3 was for the first time constructed by introducing SrTiO 3 to Cu 2 O and synthesized via a two-step route. The obtained n-SrTiO 3 /p-Cu 2 O heterojunction photocatalysts were systematically characterized by XRD , XPS , SEM, UV–vis spectra, etc., showing that n-SrTiO 3 /p-Cu 2 O composites were formed by coupling SrTiO 3 submicroparticles with Cu 2 O cubic micrometer structure. Photocatalytic results demonstrated that the introduction of SrTiO 3 brought about significant enhancement of photocatalytic activity of Cu 2 O, which led to the fact that SrTiO 3 could serve as cocatalyst for the degradation of pollutant MB by forming p-n heterojunction to accelerate photo-generated charge carriers separation and migration and providing enriched active sites. The obtained n-SrTiO 3 /p-Cu 2 O heterojunction composites showed good stability and recyclability in the process of photo-degradation. Besides, the possible photocatalytic mechanism was proposed.
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高影响因子
Applied Sciences-Basel
·
2018
·Vol. 8
·期 4
·615
·
IF 1.689
Xiangyi Shen,Jing Xu,Ivan P. Pozdnyakov,Zizheng Liu
Used as a kind of feed additive,p-arsanilic acid can pose a potential risk to organisms when abandoned in the environment. The photodegradation ofp-ASA was investigated under UV-C irradiation in the presence of persulfate (PS) in this work. The addition of PS facilitated the decomposition ofp-ASA and notably, the presence of 50 mmol PS brought about a nearly complete mineralization after 3 h, while an insignificant total organic carbon (TOC) removal was observed under UV irradiation (λ = 254 nm) only. Experimental results proved that sulfate radical (SO4•−) was responsible for the promotion effect. The cleavage of As-C bond released inorganic arsenic and caused the occurrence of various organic products, for example, hydroxybenzaldehyde, nitrobenzene, benzenediol sulfate, and biphenylarsinic acid. The application of PS with UV-C light may throw a light on thorough treatment forp-ASA containing wastewater.Keywords:p-arsanilic acid;photodegradation;UV/persulfate system;sulfate radical
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高影响因子
CHEMOSPHERE
·
2018
·
IF 4.427
Yuliya E. Tyutereva,Petr S. Sherin,Marina V. Parkhats,Zizheng Liu,Jing Xu,Feng Wu,Victor F. Plyusnin,Ivan P. Pozdnyakov
The mechanism of direct UV photolysis of p-arsanilic acid (p-ASA), a widely used veterinary drug, was revised by means of laser flash photolysis coupled with high resolution liquid chromatography – mass spectrometry (LC-MS). None of p-ASA triplet state or singlet oxygen was found to directly participate in the photodegradation of p-ASA as it was assumed in previous works. Here we demonstrate that the main primary photoprocess is a monophotonic ionization (ϕ ion 266nm = 0.032) leading to the formation of hydrated electron and corresponding anilinyl cation radical. These primary species react with dissolved oxygen yielding secondary reactive oxygen species . The final organic photoproducts, such as aminophenol and different dimeric products, originate from various reactions between these secondary species. The generation of inorganic arsenic, both As(V) and As(III), was also observed in agreement with previous works. For the first time we report the quantum yield of p-ASA photodegradation, which decreases from 0.058 to 0.035 with the excitation wavelength from 222 to 308 nm.
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PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Meng-Ya Zhu,Le-Xi Zhang,Jing Yin,Jing-Jing Chen,Li-Jian Bie,Bradley D. Fahlman
A novel organic-inorganic layered perovskite compound (C 4 H 9 NH 3 ) 2 PbI 4 has been synthesized through a simple and high-yield solution method. For the first time, this layered perovskite was used as a candidate material for gas sensors. Gas sensors based on (C 4 H 9 NH 3 ) 2 PbI 4 provided unique gas-sensing properties toward 1–800 ppm p -xylene (p-C 8 H 10 ) at the working temperature of 140 °C, including fast response, quick response-recovery, good selectivity and repeatability. The as-prepared (C 4 H 9 NH 3 ) 2 PbI 4 gas sensor can detect as low as 1 ppm concentration of p -xylene with a response of 11.8 at 140 °C. In situ diffuse reflectance Fourier transform infrared (DRFTIR) measurement shows that the p -xylene sensing mechanism can be mainly attributed to physical adsorption, which is different from other common gas-sensing metal oxides that are based on adsorption-redox-desorption mechanism.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Abdul Basit,Junyou Yang,Qinghui Jiang,Zhiwei Zhou,Jiwu Xin,Xin Li,Sihui Li
Here, the intellectual challenges for thermoelectric materials revolves around the strategy of point defect engineering to regulate the electrical and thermal transport nature of Mn 1.06- x Sn x Te ( x = 0, 0.03, 0.035, 0.04, 0.045) materials. The power factor increases with substitution of Sn into the lattice of Mn 1.06 Te leading to enhance the carrier concentrations due to reduction of the band gap. Meanwhile, the thermal conductivity has also been remarkably reduced due to diverse phonon scattering and mass fluctuation by Sn substitution. As a result, a maximum ZT ∼0.93 for Mn 1.06- x Sn x Te ( x = 0.04) sample has been achieved at 873 K, which increases by 56% in comparison with the un-doped sample.
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高影响因子
ChemElectroChem
·
2018
·Vol. 5
·期 13
·1702-1707
·
IF 4.446
Jiaqi Wang,Junxiang Liu,Yichao Cai,Fangyi Cheng,Zhiqiang Niu,Jun Chen
Graphical Right off the batt : A Li@Super P composite anode with a high specific surface area is fabricated through a low-cost brushing method, which effectively decreases the interface impedance and overpotential of Li depositing/stripping. The anode can also mitigate the detrimental shuttling effect of I 3 − generated from LiI during the charging process. The combination of the protected Li anode and LiI mediator delivers superior Li−O 2 battery performance. Rechargeable Li−O 2 batteries represent a highly attractive battery technology, owing to a high theoretical energy density of 3500 Wh kg −1 , but they suffer from large charging polarization and lithium anode degradation on cycling. Herein, we report a Li−O 2 battery system with reduced polarization and a long lifespan, which is realized by using a novel Li@Super P composite anode integrated with lithium iodide in ether-based electrolyte. Coating a Super P carbon layer, with an optimal thickness of approximately 30 μm, onto the lithium anode results in a lowered interface impedance and a decreased Li depositing/stripping overpotential (<15 mV) over 300 cycles at 0.3 mA cm −2 . The Li−O 2 batteries assembled with the Li@Super P anode and LiI additive could mitigate the detrimental shuttling effect of I 3 − and deliver a high reversible capacity of 1000 mAh g −1 with a median charge voltage lower than 3.3 V after 50 cycles. This study provides a simple yet effective way to protect the lithium anode and design high-performance Li−O 2 batteries.
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高影响因子
危险品化学品经营许可证（带存储）