Scientific Reports
·
2014
·Vol. 4
·期 1
·1-8
·
IF 5.078
Liu Yong-Qiang,Wang Feng-Xia,Xiao Yan,Peng Hong-Dan,Zhong Hai-Jian,Liu Zheng-Hui,Pan Ge-Bo
Klockmannite copper selenide nanosheets (CuSe NSs) are synthesized by a facile microwave-assisted method and fully characterized. The nanosheets have smooth surface and hexagonal shape. The lateral size is 200–500 nm × 400–800 nm and the thickness is 55 ± 20 nm. The current-voltage characteristics of CuSe NS films show unique Ohmic and high-conducting behaviors, comparable to the thermally-deposited gold electrode. The high electrical conductivity of CuSe NSs implies their promising applications in printed electronics and nanodevices. Moreover, the local electrical variation is observed, for the first time, within an individual CuSe NS at low bias voltages (0.1 ~ 3 V) by conductive atomic force microscopy (C-AFM). This is ascribed to the quantum size effect of NS and the presence of Schottky barrier. In addition, the influence of the molar ratio of Cu 2+ /SeO 2 , reaction temperature and reaction time on the growth of CuSe NSs is explored. The template effect of oleylamine and the intrinsic crystal nature of CuSe NS are proposed to account for the growth of hexagonal CuSe NSs.
研究领域:
材料科学
·
纳米技术
·
电气工程
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Xiangyang Li,Jiajun Chen,Siyu Liu,Ningning Wang,Leijiao Li,Xincui Shi,Xiangru Feng,Wenliang Li
Multimode therapeutic nanoagents are an urgent need for tumor treatment to surmount major challenges in single-mode antitumor applications. To counter this, we prepared an “all-in-one” therapeutic platform based on near-infrared (NIR)-activatable PEGylation hollow copper selenide nanoparticles (h-CuSe-PEG NPs). The obtained h-CuSe-PEG NPs exhibit an excellent photothermal conversion efficiency of 54.66% to perform photothermal therapy (PTT). The cavity of h-CuSe-PEG NPs could be loaded with the anticarcinogen doxorubicin (DOX) to achieve chemotherapy for tumors. Moreover, h-CuSe-PEG NPs could deplete the overexpressed glutathione (GSH) as well as generate ·OH due to the endogenous H2O2 in the tumor cells to execute chemodynamic therapy (CDT). Additionally, the drug release, the GSH-depletion, and the ·OH production could be further enhanced due to the in situ hyperthermia produced by PTT under the NIR irradiation. It follows that a satisfactory in vitro and in vivo therapeutic effect is acquired. Hence, the NIR-activatable h-CuSe-based nanoplatform for synergistic photoenhanced CDT/PTT/chemotherapy is promising in tumor treatment.
研究领域:
生物医学工程
·
纳米医学
·
肿瘤学
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 11
·1-9
·
IF 5.3
Wang Yueliang,Chen Xiying,Tao Zhanhui,Zhou Jingya,Sun Hanyue,Li Xian,Shi Liyu,Liu Yaqing
A novel glow-type chemiluminescence (CL)-based nanosensing system was developed for sensitive and rapid point-of-care testing (POCT) of H 2 O 2 in food. CuSe nanoparticles (CuSe NPs ) have excellent peroxidase-like activity. After being modified with thiols of 4-mercaptophenylboronic acid (MBA) (CuSe NPs @MBA), luminol can be catalyzed to produce long-lasting CL in the presence of H 2 O 2 . The possible reason for the long-lasting glow-type CL behavior was explored. Under the optimized condition, H 2 O 2 can be sensitively detected with improved repeatability. The limit of detection is as low as 0.30 μM. To meet the requirement of in situ and outside of laboratory detection, a 3D-printed portable device was designed which can eliminate the environmental interference to improve detection accuracy. The developed multifunctional platform also has the advantages of simple operation and low cost, suggesting its great potential for applications in food and agricultural fields. Graphical
研究领域:
分析化学
·
食品安全
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nanoscale
·
2024
·Vol. 16
·期 16
·8151-8161
·
IF 5.8
Ning Li,Linping Li,Yanping Qiu,Xuhui Liu,Jiatong Zhang,Yangqin Gao,Lei Ge
The rational design of the dimension and geometry of a plasmonic semiconductor cocatalyst is vitally important for efficient utilization of near-infrared (NIR) light and superior photocatalytic hydrogen generation. Herein, hollow cubic CuSe@CdS composites with different sizes and strong localized surface plasmon resonance (LSPR) were prepared by selenizing size-tunable Cu2O templates and loading CdS nanoparticles. The size of hollow cubic CuSe can affect the surface area and the conduction band potential through the size effect, regulating the carrier behavior of the CuSe@CdS heterojunction. The CuSe@CdS composites show enhanced and wide absorption in the full spectrum due to the LSPR effect of CuSe. Meanwhile, the composites show excellent photocatalytic hydrogen capacity in the full spectrum in a 0.35 M Na2S/0.25 M Na2SO3 sacrificial reagent solution. The best hydrogen production rate of CSCE2 is 1.518 mmol g−1 h−1 (5.54 times higher than that of CdS) under Vis light (780 > λ > 420 nm) irradiation and 0.28 mmol g−1 h−1 under NIR light (λ > 780 nm) illumination. Interestingly, the photocatalytic activity for H2 under Vis-NIR light (λ > 420 nm) is about 3 times (up to 4.45 mmol g−1 h−1) higher than that without NIR light assistance, due to the photothermal effect. Various analyses and DFT calculations demonstrate that the p–n heterojunction formed in the composites consists of p-type CuSe and n-type CdS, which achieves efficient carrier transfer and separation under the synergistic effect of the size effect and the photothermal effect. In addition, the expansion of the photocatalytic performance to the NIR range is mainly due to the “hot-electron” injection mechanism induced by the LSPR effect of CuSe. The reasonable design coupled with the plasmonic materials offers a new path to achieving the highly efficient conversion of solar energy to hydrogen energy.
研究领域:
材料科学
·
光催化
·
纳米技术
·
可再生能源
·
等离激元学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Gangyong Li,Mingyin Kou,Jiguo Tu,Yiwa Luo,Mingyong Wang,Shuqiang Jiao
Transition metal selenides (TMSs) are promising candidates for positive electrodes of rechargeable Al batteries (RABs) owing to their appealing merits of high specific capacity and relatively low-cost. However, TMSs suffer from fast capacity fading. To tackle the dramatic capacity loss in TMS positive electrode, herein, we design a coordination adsorption strategy into RABs using CuSe as a conversion-type positive electrode material , with significantly enhanced cycling stability and rate capability. Ex situ X-ray photoelectron spectroscopy and electron microscopy measurements unveil that both Cu and Se species experience reversible redox reaction during the charge/discharge processes and the fast capacity-deterioration is due to the dissolution of electroactive Cu and Se species into the electrolyte. Theoretical calculations reveal that the suppressed shuttle effects can be attributed to the presence of strong coordination interaction between nitrogen-doped reduced graphene oxide and the soluble active Cu and Se species. Consequently, such delicately engineered RABs exhibit an excellent cycling stability of 216.1 mA h g −1 after 500 cycles at 500 mA g −1 with an outstanding rate performance. This study offers an alternative approach to restrain the shuttle effects of active species for achieving advanced RAB system, with the potential importance far beyond the battery chemistry.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2015
·
IF 4.457
Yong-Qiang Liu,Hao-Di Wu,Yu Zhao,Ge-Bo Pan
Foreign ions are of significant importance in controlling and modulating the morphology of semiconductor nanocrystals during the colloidal synthesis process. Herein, we demonstrate the potential of foreign metal ions to simultaneously control the morphology and crystal phase of chalcogenide semiconductors. The results indicate that the introduction of Al3+ ions can induce the structural transformation from monoclinic CuClSe2 microribbons (MRs) to klockmannite CuSe nanosheets (NSs) and the growth of large-sized CuSe NSs. The as-prepared micrometer-sized CuSe NSs exhibit a high-conducting behavior, long-term durability, and environment stability. The novel properties enable CuSe NSs to open up a bright prospect for printable electrical interconnects and flexible electronic devices.
研究领域:
材料科学
·
半导体物理
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
ENERGY & FUELS
·
2024
·
IF 5.2
Yuying Feng,Wene Du,Jiahui Jiang,Ting Zhao,Guancheng Xu,Li Zhang
Hydrogen production by electrolytic water is a green technology, which is conducive to alleviating the current severe energy and environmental crisis. However, it is affected by the high oxygen evolution reaction (OER) potential and has high energy consumption. Replacing the OER with the urea oxidation reaction (UOR) can reduce energy consumption. Herein, V-doped bimetallic selenides with an ultrathin nanosheet structure catalyst (V–NiSe2/Ni3Se4/CuSe/NF) are prepared via hydrothermal and low-temperature selenization. The catalyst has excellent UOR activity with a low potential of 1.33 V at 100 mA cm–2 and remarkable stability (120 h at 10 mA cm–2). Electrochemical measurements and characterization indicate that the abundant interface formed by NiSe2/Ni3Se4 and CuSe can induce charge transfer, thereby improving the catalytic activity and stability of the electrode material. V doping promotes the formation of ultrathin nanosheets with folds, which favors expanding the catalyst’s active site and the contact region between the catalyst and the electrolyte, thus improving the catalytic activity. In situ Raman measurement further proves that V doping is beneficial to the surface reconstruction of the catalyst and accelerates the reaction kinetics of UOR. This work offers a new idea for the preparation of highly active UOR electrodes.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materiomics
·
2023
·
IF 9.4
Sitong Wei,Zhen Ji,Wenhao Li,Shuqi Zheng,Qing Wang,Zhiliang Li,Lu Yu,Sitong Luo,Weiyu Song
Cu 3 SbSe 4 , a copper-based sulfide free of rare earth elements, has received extensive attention in thermoelectric materials. However, its low carrier concentration restricts its widespread application. In this study, a microwave-assisted solution synthesis method was used to produce samples of Cu 3 SbSe 4 , which enabled the formation of CuSe in situ and increased the yield. Through the use of first-principles calculations, structural analysis, and performance evaluation, it was found that CuSe can enhance the carrier concentration and that induced nano-defects have a positive effect on reducing the lattice thermal conductivity. Moreover, doping with Sn decreases the band gap of the system and moves the Fermi level into the valence band, increasing the carrier concentration to 1.15 × 10 −20 cm −3 . Finally, the zT value of the Cu 3 Sb 0.98 Sn 0.02 Se 4 sample was achieved at 1.05 at 623 K when the theoretical yield of a single synthesis was 10 mmol.
研究领域:
材料科学
·
热电学
·
固体物理
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2016
·
IF 2.265
Yimin Wu,Ilia Korolkov,Xvsheng Qiao,Xianghua Zhang,Jun Wan,Xianping Fan
A rapid injection approach is used to synthesize the copper selenide nanoparticles and two-dimensional single crystal nanoplates . This technique excludes the use of toxic or expensive materials, increasing the availability of two-dimensional binary chalcogenide semiconductors. The structure of the nanocrystals has been studied and the possible formation mechanism of the nanoplates has been proposed. The optical absorption showed that the nanoplates demonstrated wide and tuneable absorption band in the visible and near infrared region . These nanoplates could be interesting for converting solar energy and for nanophotonic devices operating in the near infrared .
研究领域:
材料科学
·
纳米科技
·
半导体材料
·
光电子学
·
能源材料
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Huabin Chen,Yujin Xing,Sitong Liu,Junli Fu,Honglong Shi,Yujie Liang,Lijuan Wang,Wenzhong Wang
The hydrothermally prepared two-dimensional copper selenide nanosheets (2D CuSe NSs) have been employed for the first time to degrade rhodamine B (RhB) in the presence of hydrogen peroxide (H 2 O 2 ) under ultraviolet to near-infrared (NIR) light irradiation and dark condition. The experimental measurements demonstrate that 99.7% RhB is degraded under NIR light irradiation for 120 min. Moreover, the experimental tests clearly demonstrate that the 2D CuSe NSs display excellent ability to degrade RhB under dark condition. The different degradation mechanisms under the light irradiation and dark condition have been revealed by the experimental tests through the investigation of H 2 O 2 role and the evaluation of hydroxyl radicals (•OH) and H 2 O 2 concentration during the degradation reaction. Under light irradiation, the H 2 O 2 traps the photogenerated electrons of the CuSe to generate •OH and hydroxide ion (OH − ), and the holes react with OH − to produce •OH, making RhB to be degraded efficiently. Under dark conduction, the 2D CuSe NSs react with H 2 O 2 to exhibit Fenton-like process to degrade RhB with a degradation rate of 90.0% within 120 min. This work opens a pathway for developing nanostructures with full-solar-responsive and strong near-infrared photocatalytic activity as well as Fenton-like reaction to efficiently degrade pollutants under light irradiation and dark condition.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Hua Yan,Jiangtao Dong,Xingkun Luan,Chen Wang,Zhenjun Song,Qi Chen,Jujiang Ma,Xuezhong Du
The construction of nanoplatforms for the multimodal cancer therapy still remains an enormous challenge. Ultrathin porous nitrogen-doped carbon coated stoichiometric copper selenide heterostructures (CuSe/NC) are prepared using a facile and green one-pot hydrothermal method. Interestingly, CuSe/NC itself can achieve both photothermal therapy (PTT) and photocatalytic therapy (PCT) under irradiation of a single near-infrared (NIR) light (808 nm), which is convenient and safe for clinical applications. Importantly, the triple-enhanced NIR light-activated PCT, including O2-independent free radicals, Fenton-like reaction, and glutathione (GSH) depletion, breaks through the limitations of hypoxia and overexpressed GSH in cancer cells. Furthermore, CuSe/NC is loaded with doxorubicin (DOX) via metal coordination and then decorates with DNA to construct the CuSe/NC-DOX-DNA nanoplatform. Surprisingly, the facile nanoplatform has an advanced biocomputing capability of an “AND” Boolean logic gate with the smart “AND” logic controlled release of DOX upon combined stimuli of pH and GSH for precise cancer chemotherapy. The synergistic mechanism of proton-mediated ligand exchange between DOX and GSH is proposed for the “AND” logic controlled drug release from CuSe/NC-DOX-DNA. In vitro and in vivo studies demonstrate that CuSe/NC-DOX-DNA has excellent anticancer efficacy and negligible toxicity. This innovative nanoplatform with multienhanced anticancer efficacy provides a paradigm for combination cancer therapy of PTT, PCT, and chemotherapy.
研究领域:
肿瘤学
·
纳米医学
·
生物材料学
✓ 已验证
DOI
PubMed
高影响因子
Advanced Fiber Materials
·
2022
·Vol. 5
·期 1
·209-222
·
IF 12.958
Yang Jun,Xu Lei,Ding Yining,Liu Chang,Wang Bingchang,Yu Yanchao,Hui Chao,Ramakrishna Seeram,Zhang Jun,Long Yunze
Malignant glioblastoma (GBM) is prone to relapse due to the inevitable tumor cells residue by surgery. During the tumor resection surgery in brain, addressing bleeding and superbug infections is also full of challenges. Currently, no method or material in clinical craniotomy can simultaneously solve these three problems. Herein, Chitosan composite nanofibers embedded with CuSe nanoparticles were prepared by green electrospinning method, in which the CuSe nanoparticles have strong absorption in the second near-infrared (NIR-II) window. Immediately after removing the tumor in craniotomy, nanofibers were electrospun and deposited directly onto the resection site with high precision (> 90%) to achieve rapid hemostasis (< 8 s). Moreover, evidenced by the deeper penetration depth of NIR-II light (1064 nm) both in the scalp and skull than NIR-I light (808 nm), photothermal and photodynamic therapy induced by NIR-II exhibits efficient superbug-killing rate (> 99%) and effectively induces cell apoptosis of residual tumor thereby to inhibit tumor recurrence. Only using the same material, a trilogy of intracranial hemostasis, killing superbug and residual cancer cells is simultaneously achieved. The short operation time reduces the risk of craniotomy. This electrospinning strategy could combine with craniotomy and minimally invasive surgery, which may provide novel perspectives in clinical operation besides craniotomy. Graphical abstract
研究领域:
生物医学工程
·
肿瘤学
·
材料科学
✓ 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）