BIOSENSORS & BIOELECTRONICS
·
2023
·
IF 12.6
Bo Liu,Yonghao Ge,Yahui Lu,Yibo Huang,Xiaoru Zhang,Xunyi Yuan
This work develops a novel photoelectrochemical sensor for the detection of carcinoembryonic antigen (CEA) based on the composite of UCNPs with semiconductors and conformational changes in the DNA structure . Firstly, SnS 2 , ZnIn 2 S 4 and UCNPs were assembled on the surface of the ITO electrode. Then Au NPs were dropped, which could facilitate the coupling of CdSe NPs modified DNA1 via Au–S bond, giving an ITO/SnS 2 /ZnIn 2 S 4 /UCNPs/CdSe heterojunction structure. When irradiated with 980 nm near-infrared (NIR) light, the UV–visible light emitted by the UCNPs could excite the nanocomposite , producing an enhanced photoelectric reaction. Subsequently, CEA aptamer and DNA2-modified SiO 2 were added to form a Y-shaped DNA structure. At this time, the photocurrent was significantly reduced by the combination of the light-blocking effect of SiO 2 and the departure of CdSe NPs from the electrode surface . When the target CEA was added, the recognition between CEA and the aptamer led to the collapse of the Y-shaped DNA structure, the restoration of hairpin DNA and the proximity of CdSe to the electrode. Accordingly, the photocurrent signals enhanced again. Under optimal experimental conditions, the detection limit as low as 0.3 pg mL −1 was obtained with good selectivity , achieving a sensitive “on-off-on” photoelectrochemical sensor for CEA detection.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jian Li,Wenbin Luo,Zhen Zhang,Fenghong Li,Zisheng Chao,JinCheng Fan
Advances in cathode material design and understanding of intercalation mechanisms are necessary to improve the overall performance of aluminum ion batteries . Therefore, we designed ZnSe/SnSe 2 hollow microcubes with heterojunction structure as a cathode material for aluminum ion batteries. ZnSe/SnSe 2 hollow microcubes with an average size of about 1.4 µm were prepared by selenization of ZnSn(OH) 6 microcubes successfully. The shell thickness of ZnSe/SnSe 2 hollow microcubes is about 250 nm. On one hand, the hollow cubic structure can effectively alleviate the volume effect, provide shorter ion diffusion paths, and increase the contact area with the electrolyte. On the other hand, ZnSe/SnSe 2 heterojunction structure can establish a built-in electric field to facilitate ion transport. The synergistic effect of the two leads to the improved electrochemical performance of ZnSe/SnSe 2 as the cathode of aluminum ion batteries. The material delivered a reversible capacity of 124 mAh/g after 150 cycles at a current density of 100 mA/g. Meanwhile, coulombic efficiency remained above 98% in almost all cycles. In addition, the electrochemical reaction mechanism and kinetic process of Al 3+ and ZnSe/SnSe 2 were studied.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Acta Biomaterialia
·
2023
·
IF 9.7
Xiaoli Feng,Tian Lin,Dong Chen,Zhiyang Li,Qiuping Yang,Huiting Tian,Yao Xiao,Mingzhen Lin,Min Liang,Weihong Guo,Peng Zhao,Zhaoze Guo
Chemodynamic therapy (CDT) can effectively induce immunogenic cell death (ICD) in tumours and is thus a promising strategy for boosting the efficacy of immunotherapy. However, the mechanism by which CDT enhances ICD and lowers ICD efficiency is unknown and this restricts its clinical application. In this study, a second near-infrared (NIR-II) window irradiation-triggered hydrogen peroxide (H 2 O 2 ) self-supplying nanocomposite ((Cu 2 Se-CaO 2 )@LA) was constructed. The modified lauric acid was melted by the heat energy of the NIR-II irradiation, to expose the CaO 2 nanoparticles, and they then reacted with water to produce H 2 O 2 and Ca 2+ . H 2 O 2 was then converted to hydroxyl radicals by the photothermal-enhanced CDT process of the Cu 2 Se nanocubes. Notably, the CDT and Ca 2+ overload was found to induce sequential damage to the mitochondria and endoplasmic reticulum (ER), which upregulated the PERK-mediated eIF2α phosphorylation pathway and caused subsequent ICD. NIR-II irradiation of the (Cu 2 Se-CaO 2 )@LA also increased reactive oxygen species (ROS) formation and this was sufficient to increase dendritic cell maturation, attracting cytotoxic T lymphocytes, and suppressing tumour growth in vivo. Overall, we demonstrated that an enhanced CDT strategy under NIR-II exposure and H 2 O 2 self-supply can induce extensive ICD by inducing mitochondria-associated ER stress, which represents a highly effective and promising strategy for ICD amplification and tumour immunotherapy. Statement of significance In this study, a second near-infrared window (NIR-II) irradiation-triggered and H 2 O 2 self-supplying nanocomposite (named (Cu 2 Se-CaO 2 )@LA) was constructed and tested both in vitro and in vivo . These nanoparticles demonstrated promising antitumor activity as designed. Mechanistically, the nanoparticles could damage mitochondria and upregulate the PERK-mediated eIF2αphosphorylation pathway, further causing endoplasmic reticulum stress, and inducing immunogenic cell death through dendritic cell maturation and cytotoxic T lymphocyte recruitment augmented activity. This system represents a highly effective and promising strategy for enhancing tumor immunotherapy and provides new insights for future studies and design refinements.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Huihui Xu,Zhiqiang Wang,Shufan Feng,Xinman Liu,Xueqing Gong,Jianli Hua
In recent years, PDI-based supramolecular photocatalysts have attracted significant attention. However, charge localization effects hinder the charge transfer in PDI , thereby leading to a high recombination rate and limited activity. Herein, three heteroatom bay-annulated perylene diimide supramolecule photocatalysts ( N-APDI , S-APDI and Se-APDI ) were developed for photocatalytic H 2 evolution. Under visible-light irradiation, heteroatom-annulated PDI supramolecule display better H 2 evolution rate than that of APDI without heteroatom, in which N-APDI shows the highest hydrogen production rate of 61.49 mmol g −1 h −1 and an apparent quantum yield (AQY) of 5.90% at 420 nm. The enhancement in photocatalytic activity of heteroatom-annulated PDI supramolecule can be rationalized by stronger molecular dipole, which enhance internal electric field magnitude and thus promotes the separation and migration of charge. Also, heteroatom-annulation heteroatom can act as more beneficial active site to promote HER activity. This work provides a new strategy to develop supramolecular photocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Bing Yang,Yue Song,Yang Song,Ziyu Ma,Jianbo Sun
2D transition metal selenides are facing challenges in the field of gas sensing due to their short carrier lifetime and low utilization rate. Along these lines, in this work, MoSe 2 nanosheets were successfully synthesized by solvothermal method , and modified with TiO 2 QDs. P-N heterostructures with the advantage of quantum dot constraint effect are constructed. The developed heterojunction can effectively promote the separation and transfer of the generated charges, under the excitation of ultraviolet light , while the room temperature sensitivity of the material for the detection of NO 2 is enhanced.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2022
·Vol. 11
·期 3
·2201939
·
IF 10.05
Yajun Lou,Pengfei He,Boyuan Ge,Xijian Duan,Lei Hu,Xiaoli Zhang,Lili Tao,Xinhai Zhang
In this study, red light emitting InP/ZnSeS/ZnS quantum dots (QDs) are prepared by thermal injection method. The results show that the InP/ZnSeS/ZnS QDs saturable absorbers (SA) have good nonlinear saturable absorption properties with modulation depth of 24.2% and saturation intensity of 0.08 KW cm −2 . Then the QD SAs are applied to the erbium-doped fiber laser (EDFL) ring cavity system, and a mode-locked laser pulse with a pulse width of 635 fs is generated. In addition, the pulse width is determined by the carrier recovery time, which is closely related to the defect density in the material. A large number of defects are eliminated in the QDs by hydrogen fluoride (HF) treatment, and the pulse width is reduced from 635 to 450 fs. Results of time-resolved photoluminescence and ultrafast transient absorption spectroscopy (TAS) show that HF treatment indeed reduces defects in InP/ZnSeS/ZnS QDs, indicated by the decrease of the carrier recovery time. This is different from the reported 2D SA materials, which usually reduce the carrier recovery time by increasing the defect density. This study will inspire new applications of QDs in ultrafast photonics and nonlinear optics.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
JongGuk Kim,HuiGwang Yun,KukChol Ri,JingYu Sun,HyoYong Kim,Lu Liu
Today, developing photocatalysts with high sterilization efficiency is still an urgent challenge. Currently photothermal therapy (PTT) and photodynamic therapy (PDT) are known as a promising candidate for eradicating bacteria because of strong reactivity, non-specific attack characteristics and minimal invasiveness . Therefore, the synergic effect of PTT and PDT can shorten the antibacterial time, increase the antibacterial rate, and reduce antibacterial agent dosage. Herein, SnSe samples with sphere, rod, plate, and surface wrinkled morphology were synthesized by a simple solvothermal method. The samples were denoted as SnSe-1, SnSe-2, SnSe-3, and SnSe-4, respectively. The morphology and size of the prepared samples greatly relied on the selection of surfactant and the reaction time. In addition, the size and morphological changes affected the photothermal properties and photodynamic properties of the prepared samples. Among the prepared samples, SnSe-1 showed the best photothermal effect (41.4%) and reactive oxygen species generating ability during the 808 nm laser irradiation. Consequently, SnSe-1 exhibited sterilization rates of 99.99% against Gram-negative Escherichia coli (E. coli) and Gram-positive Bacillus subtilis (B. subtilis) during NIR irradiation (1.5 W/cm 2 ， 10 min) at a relatively low concentration (25 µg/mL). The result suggests that SnSe-1 nanoparticle with a spherical shape could be used as an effective antibacterial agent for the treatment of bacterial contamination, including rapid bacterial sterilization in water.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Jiahui Li,Jie Gao,Lida Jia,Lei Miao,Sijing Zhu,Zhongwei Zhang,Chengyan Liu,Xiaoyang Wang
The solution-process method can be easily realized without expensive and complicated equipment, which provides the possibility for cost-effective application of flexible thermoelectric films. Nonetheless, the reported output properties of solution-processed Cu 2 Se based films are not satisfactory due to the absence of effective compositional adjustment and optimal length. In this work, a series of solution-processed nylon-supported flexible Cu 2+x Se films have been fabricated. The excess Cu not only fills the vacancies, but also transforms the β -Cu 2 Se with disordered Cu atoms into long-range ordered lamellar α -Cu 2 Se, thereby reducing the carrier concentration and improving the carrier mobility of the films. As a result, a high power factor of 856.59 ± 119.92 μW m −1 K −2 has been achieved in the Cu 2.20 Se film at 303 K. In addition, by numerical simulation, the ideal length of single Cu 2.20 Se film was calculated to be 2 mm. With an actual temperature difference of 6.6 K, a maximum output power density of 2.918 μW cm −2 K −2 , which is superior to those of other p-type flexible thermoelectric films, is realized in the single Cu 2.20 Se film. This work provides a feasible idea to promote the output performance of solution-processed flexible thermoelectric films.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
·
2023
·Vol. 13
·期 12
·2203519
·
IF 27.8
Huijun Liao,Zizhen Zhou,Sikang Zheng,Yuling Huang,Guang Han,Guoyu Wang,Zhengyong Huang,Xu Lu,Jian Li,Xiaoyuan Zhou
High-temperature thermoelectric (TE) materials are common wide-gap semiconductors that are used in order to prevent the bipolar effect. Here, a potential high-temperature n -type TE material SmS with a simple NaCl structure that demonstrates a narrow band gap of ≈0.25 eV is reported. As expected, a temperature-dependent carrier concertation is observed, which is attributed to the thermal activation of electrons from valence band edge to conduction band. Interestingly, the intrinsic activation does not cause any sign of a bipolar effect. Density functional theory calculations suggest that the phenomenon originates from the strong electron-hole asymmetry in the electronic structure and the electron-to-hole conductivity ratio is as high as 700–900. As a result, the activated minority carriers barely participate in the TE transport and the maximum power factor reaches 1.41 mW K −2 m −1 at 1123 K. By further alloying with Se to reduce lattice thermal conductivity, a peak zT of ≈1.1 is obtained in Sm 1.08 S 0.78 Se 0.22 at 1123 K, which is among the best n -type high-temperature thermoelectrics. This study proves high-temperature TE materials can be found in narrow-gap semiconductors, which significantly enriches the scope of possibilities for novel TE materials.
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2023
·
IF 4.6
Hui-Ling Hu,Hao Hao,Xue Ren,Zhe-Yong Chen,Meng Liu,Yi Liu,Feng-Lei Jiang
InP quantum dots (QDs) attract growing interest in recent years, owing to their environmental advantages upon applications in display and lighting. However, compared to Cd-based QDs and Pb-based perovskites, the synthesis of InP QDs with high optical quality is relatively more difficult. Here, we established a mid-synthetic modification approach to improve the optical properties of InP-based QDs. Tris(dimethylamino)phosphine ((DMA)3P) and indium iodide were used to prepare InP QDs with a green emission (∼527 nm). By introducing zinc halides (ZnX2) during the mid-synthetic process, the photoluminescence quantum yield (PLQY) of the resulting InP/ZnSeS/ZnS core/shell/shell QDs was increased to >70%, and the full-width-at-half-maximum (FWHM) could be narrowed to ∼40 nm. Transmission electron microscopy clearly showed the improvement of the QDs particle size distribution after introducing ZnX2. It was speculated that ZnX2 was bound to the surface of QDs as a Z-type ligand, which not only passivated surface defects and suppressed the emission of defect states but also prevented Ostwald ripening. The InP cores were also activated by ZnX2, which made the growth of the ZnSeS shell more favorable. The photoluminescence properties started to be improved significantly only when the amount of ZnX2 exceeded 0.5 mmol. As the amount increased, more ZnX2 was distributed around the QDs to form a ligand layer, which prevented the shell precursor from crossing the ligand layer to the surface of the InP core, thus reducing the size of the InP/ZnSeS/ZnS QDs. This work revealed a new role of ZnX2 and found a method for InP QDs with high brightness and low FWHM by the mid-synthetic modification, which would inspire the synthesis of even better InP QDs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Bowen Cong,Xianrong Li,Yanhua Suo,Gang Chen
Bimetallic selenides with various valence transitions and high theoretical capacities are extensively studied as anodes for sodium-ion-batteries (SIBs), but their huge volume changes and poor capacity retention limit their practicality. Herein, a facile and controllable strategy using a binary Ni-Co metal–organic framework (MOF) precursors followed by the selenization process, which produced a cobalt nickel selenide/ N -doped carbon composite ((CoNi)Se 2 /NC) that maintained the hierarchical nanospheres structure. Such a distinctive structure affords both Na + and electron diffusion pathways in the electrochemical reactions as well as high electrical conductivity, thus leading to superior electrochemical performance when the designed composite is utilized as an anode in SIBs. The resulting nanospheres-like (CoNi)Se 2 /NC hierarchical structure exhibits a high specific capacity of 526.8 mA h g −1 at 0.2 A/g over 100 cycles, a stable cycle life with no obvious capacities loss at 1.0 and 3.0 A/g after 500 cycles, and exceptional rate capability of 322.9 mA h g −1 at 10.0 A/g.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RARE METALS
·
2022
·Vol. 42
·期 3
·916-928
·
IF 6.318
Hu Jin-Zhi,Liu Wen-Jie,Zheng Ji-Hua,Li Guo-Chun,Bu Yong-Feng,Qiao Fen,Lian Jia-Biao,Zhao Yan
Cobalt selenide (CoSe 2 ) has become a promising anode material for sodium-ion batteries (SIBs) due to its stable chemical properties, environmental friendliness, and high theoretical capacity. However, the undesirable rate capacity and cycle stability of the anode materials largely limit its applications for SIBs due to the relatively low electronic conductivity and huge volume change during the Na + insertion/extraction. In this study, electrostatic spinning combined with a wet chemical method is employed to synthesize coral-like composite material (CNF@c-CoSe 2 /C), which is composed of CoSe 2 /carbon nanosheet arrays (CoSe 2 /C) and carbon nanofibers (CNFs). CoSe 2 /C nanoflakes derived from metal-organic frameworks (MOFs) with high surface area and the porous structure can inhibit the pulverization and amorphization of CoSe 2 during charge and discharge processes, thus significantly keeping the stability of the microstructure. CNF can limit the overgrowth of nanosheets and serve as a conductive skeleton. Compared to two-dimensional CoSe 2 /C nanoflakes and pure CoSe 2 nanoparticles, the composite can expose more active sites and effectively accelerate the diffusion of Na + , which displays enhanced rate capability (266.5 mAh·g −1 at 5.0 A·g −1 ) and cycling stability (268.3 mAh·g −1 after 100 cycles at 1.0 A·g −1 ). Moreover, the rational preparation strategy for metal selenide-based heterostructure material presents a new way for high-performance SIBs. Graphical abstract
✓ 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）