COLLOIDS AND SURFACES B-BIOINTERFACES
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2022
·
IF 5.999
Shouning Yang,Shengkun Wang,Yanmin Zhang,Yijing Wang,Jinhong Yuan,Yuqin Jiang,Xing He,Lihong Liu,Jian Song,Liang Chen,Huayan Yang
Mitochondria-targeted phototherapy, especially combined photothermal therapy (PTT) and photodynamic therapy (PDT), has been regarded as an attractive strategy for the treatment of tumor. In this study, a facile approach to prepare two-dimensional (2D) BiOCl-Bi 2 S 3 nanostructures was developed, where Bi 2 S 3 quantum dots were doped in/on the ultrathin BiOCl nanosheets , forming a p-n heterojunction . The BiOCl-Bi 2 S 3 shows favorable photothermal conversion efficiency (32%) and synergistically reactive oxygen species (ROS) generating capability under near-infrared (NIR) irradiation. Moreover, the conjugation of synthetic targeting ligand to the surface of BiOCl-Bi 2 S 3 endows the heterojunction effective tumor targeting ability and selective mitochondrial accumulation. The combined cancer targeting ability and synergistic PTT/PDT permit enhanced cooperative phototherapeutic efficiency of the 2D heterojunction. This study provides an attractive way for designing new class of heterostructure materials for potential applications in subcellular-targeted phototherapy.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Xing Yang,Jun Guo,Zi-Yuan Wang,Wen-Hao Gu,Quan Shan,Jing Feng,Zhen-Hua Ge
Bi 2 S 3 -based materials with low thermal conductivity and high Seebeck coefficient has been regarded as promising thermoelectric materials for years. To optimize the thermoelectric properties of Bi 2 S 3 materials, (Se, Cl)-co-doped nanostructured Bi 2 S 3 bulks were prepared by hydrothermal method combined with spark plasma sintering . The doping contents of Se and Cl in Bi 2 S 3 depend on the reaction time of the hydrothermal process. A high power factor of 450 μWm −1 K −2 was achieved for Bi 2 S 3 sample with the reaction time of 24 h owing to the substitution of S by Se and Cl. Meanwhile, a low thermal conductivity of 0.35 Wm −1 K −1 is obtained for the Bi 2 S 3 sample with the reaction time of 18 h, owing to the strong phonon scattering caused by the high density of grain boundaries, pores and point defect . Therefore, benefiting from the improved electrical transport properties and reduced thermal conductivity, a peak ZT value of ~ 0.57 was obtained at 673 K for the Bi 2 S 3 sample with the reaction time of 24 h.
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NANOTECHNOLOGY
·
2022
·Vol. 33
·期 45
·455103
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IF 3.953
Tingting Zhao,Qin Zhang,Feng Cang,Shilong Wu,Yu Jiang,Qiyao Zhao,Yifan Zhou,Xiaomeng Qu,Xuesong Zhang,Yushen Jin,Yanyan Li,Yujie Fu
To fabricate a novel stimuli-responsive system enabling controlled drug release and synergistic therapy, yolk-shell shaped bismuth sulfide modified with Au nanoparticles (Au-Bi2S3) was prepared. The Au-Bi2S3 nanomaterial with heterojunction structure exhibited excellent photothermal conversion efficiency and considerable free radicals yield under laser irradiation. The drug delivery capacity was confirmed by co-loading Berberine hydrochloride (BBR) and a phase change material 1-tetradecanol (PCM), which could be responsible for NIR light induced thermal controlled drug release. In vitro investigation demonstrated that Au-Bi2S3 has cell selectivity, and with the assistance of the properties of Au-Bi2S3, the loaded drug could give full play to their cancer cell inhibition ability. Our work highlights the great potential of this nanoplatform which could deliver and control Berberine hydrochloride release as well as realize the synergistic anti-tumor strategy of photothermal therapy, photodynamic therapy and chemotherapy for tumor therapy.
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SENSORS AND ACTUATORS B-CHEMICAL
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2021
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IF 7.46
Di Cheng,Huimin Wu,Chuanqi Feng,Yu Ding,He Mei
In this study, a bifunctional photoelectrochemical (PEC) sensor based on Bi/Bi 2 S 3 /BiVO 4 (Bi-BSV) is prepared by one-step hydrothermal method . Firstly, the results from experiments show that the PEC performances of Bi 2 S 3 /BiVO 4 -X (BSV-X, X = m(Bi 2 S 3 )/m(Bi 2 S 3 + BiVO 4 )) are higher than those of Bi 2 S 3 and BiVO 4 , and BSV-15% has the highest PEC performance. To further improve the PEC properties of BSV-15%, metal-Bi was introduced to the synthesis of Y-Bi-BSV-15% (Y represents the amount of glucose added). Moreover, UV–visible diffuse reflectance spectrum (UV–vis DRS) and photoluminescence (PL) demonstrate that 0.3-Bi-BSV-15% has the widest visible light absorption range and strongest photogenerated carriers separation capability among all composites. Based on the above results, the PEC sensor based on the 0.3-Bi-BSV-15% for detecting hexavalent chromium (Cr (VI)) and hydrogen peroxide (H 2 O 2 ) is built. The results exhibit that 0.3-Bi-BSV-15% has a wider detection range of 2–230 µM and a lower detection limit of 0.094 µM for Cr (VI) detection. While for H 2 O 2 detection, the detection range and detection limit are 1–130,000 µM and 0.089 µM, respectively. Therefore, 0.3-Bi-BSV-15% has potential application in Cr (VI) and H 2 O 2 detection.
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NEW JOURNAL OF CHEMISTRY
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2021
·Vol. 46
·期 2
·857-867
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IF 3.591
Ziwen Wang,Baichuan Lu,Xiaokun Zhang,Shixiang Lu,Wenguo Xu
Herein, we have prepared a new nanocomposite Bi2S3/Co3O4/rGO/Ni foam substrate electrode through hydrothermal synthesis and an annealing process. SEM clearly shows that the Bi2S3/rGO/Ni foam substrate and Co3O4/rGO/Ni foam substrate prepared under the experimental conditions are cuboid-shaped and flower-shaped, respectively. However, the shape of Bi2S3/Co3O4/rGO/Ni foam is a perfect combination of the above two. We call this cuboid full of petals a flower-rod-like shape. The BET test found that the specific surface area of this unique morphology is as high as 152.7 cm2 g−1, which is beneficial towards charge transfer and improves the overall electrochemical reaction performance of the electrode. In addition, electrochemical performance tests displayed that the Bi2S3/Co3O4/rGO/Ni foam electrode had a high specific capacitance of 2214.3 F g−1 at 1 A g−1. The highest energy density of the Bi2S3/Co3O4/rGO/Ni foam//activated carbon asymmetric supercapacitor is 133.4 W h kg−1 (the corresponding power density is 800.1 W kg−1), and the highest power density is 8568.2 W kg−1 (the corresponding energy density is 70.5 W h kg−1). Additionally, under the condition of 10 A g−1 current density, the capacitance retention rate is still extremely high: 99.4% after 10 000 continuous charge and discharge tests. In practical application, two Bi2S3/Co3O4/rGO/Ni foam//activated carbon asymmetric supercapacitors in series can make a 2.5 V bulb maintain a high brightness for 1 minute.
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Xu Xing,Luxin Zhang,Yue Ren,Yunfeng Li,Han Yu,Weiwei Shi
The mild, fast and green removal of hexavalent chromium (Cr(VI)) from wastewater has already attracted extensive attention due to the severe acute toxicity and carcinogenicity of Cr(VI). At present work, Bi 2 S 3 /Bi 2 MoO 6 S-scheme heterojunctions were constructed by facile solvothermal assembly and in situ anion exchange methods for visible light-driven efficient photocatalytic removal of Cr(VI). The structure-activity relationship, photoelectrochemical properties, and density functional theory (DFT) calculations revealed that the controllable construction of the heterostructure significantly expanded the light response range and remarkably enhanced the light absorption capacity. In particular, the unique charge transfer mechanism of this S-scheme heterojunction is conducive to promoting efficient separation of photogenerated charges and thus enhancing the photocatalytic performance. The results show that the total efficiency of Cr(VI) removal by the developed Bi 2 S 3 /Bi 2 MoO 6 heterojunction under visible light irradiation is 98.5% within 6 min, with a k value of 0.466 min −1 . This work provides a new route with enormous promise to construct bismuth-based S-scheme heterojunction photocatalysts for clean and efficient environmental remediation.
研究领域:
环境科学
·
材料科学
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ACS Materials Letters
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2023
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IF 11.4
Zhenyu Hu,Dan Zhao,Yuheng Li,Xin Lv,Jinhui Song,Lingyi Meng,Shui-yang Lien,Peng Gao
The demand for a sustainable power supply and management has become increasingly essential with the rise of Internet of Things (IoT) devices and the associated wireless sensor networks. Inorganic thermoelectric thin films, such as those based on Bi2S3, are becoming a viable solution to this issue as they are low-toxic, inexpensive, and possess a high Seebeck coefficient and low thermal conductivity. However, they usually suffer from an inherent low electrical conductivity. In this study, we tackled this problem by incorporating Cl into Bi2S3 lattices using a solution process, resulting in a substantial increase in both the conductivity and carrier concentration. Additionally, DFT calculations show that the doping of Cl leads to the formation of a degenerate semiconductor, which increases conductivity. Moreover, a high power factor of 121.88 μW m–1 K–2 was achieved after doping before plasma treatment. Specifically, the Bi2S3 sample doped with 0.5 mmol of BiCl3 with plasma treatment achieved a remarkable conductivity of 100.72 S cm–1, among the highest reported for a Bi2S3-based system, which is attributed to the sharp increase of carrier concentration. This research demonstrates a promising approach for overcoming the inherently low conductivity of Bi2S3-based thermoelectric thin films to enable them as a viable solution for low-cost power supply in IoT applications.
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ChemCatChem
·
2021
·Vol. 13
·期 9
·2293-2302
·
IF 5.686
Shouning Yang,Xiaoyang Liu,Sijia Lu,Zhuo Li,Yanmin Zhang,Shaoning Yu,Jian Song,Chuanfan Ding,Huayan Yang
Graphical Environmentally friendly oxidations of aromatic alcohols to aldehydes: ultrathin 2D Bi 2 S 3 −BiOCl heterojunction catalyst with molecule oxygen as oxidant. Novel facile one-pot synthesis of Bi2S3−BiOCl ultrathin hetero-nanosheets for selective alcohol oxidation (Song, Yang and co-workers from Ningbo University Henan Normal University) The development of eco-friendly and low cost catalysts is challenging. Here, heterostructures of Bi 2 S 3 quantum dots (QDs) doped onto ultrathin BiOCl nanosheets were synthesized by a facile hydrothermal method to exploit efficient photosensitizers with appropriate electronic states to enhance the transfer of electrons. The obtained Bi 2 S 3 −BiOCl showed highly efficient photocatalytic ability for selective oxidation of aromatic alcohols to aldehydes. More oxygen vacancies are formed on the exposed 001 facet of the ultrathin BiOCl, which can effectively trap electrons and form .O 2 − radicals. The cooperation between the BiOCl and the Bi 2 S 3 QDs effectively separates photogenerated electron-hole pairs at the heterointerface and facilitates the cooperative actions of .O 2 − radicals and holes, which brings about a desirable photocatalytic efficiency for the selective oxidation of aromatic alcohols. This work highlights the synergistic effect of semiconductor QDs and two-dimensional materials on selective conversion processes and provides a new design paradigm using noble metal-free heteromaterials with high photocatalytic activity. This opens new possibilities for photocatalyst design using heteromaterials with high photocatalytic activity.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2021
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IF 19.503
Meng Li,Jingxue Sun,Gang Chen,Shunyu Yao,Bowen Cong,Pengfei Liu
In order to take full advantage of solar energy, the development of full spectrum photocatalysts have become focus of attention. Herein, the hollow FeS 2 /Bi 2 S 3 is constructed to enhance photocatalytic hydrogen evolution by the synergistic effect of photothermal property and thermoelectric effect. This is the first time to exploit the ΔT between the heat generated by photothermal effect and the cold photocatalytic system to provide driving force for pyroelectric effect. The FeS 2 can make the most of near infrared (NIR) light to thermogenesis and provide hot end for thermoelectric effect of Bi 2 S 3 . Under the environment of circulating condensed water, Bi 2 S 3 will cause spontaneous polarization and generate thermoelectric effect under the influence of temperature difference (ΔT) fluctuation. It releases the charge on the surface, so as to control the migration direction and rate of carriers in FeS 2 nanoparticles. The results of surface work function and COMSOL numerical simulation display that the improvement of photocatalytic efficiency is on account of the lower surface work function and high pyroelectric potential. The hydrogen production efficiency of FeS 2 /Bi 2 S 3 -3 reaches 16.8 mmol g −1 h −1 and has favourable cycle stability. This study provides a new insight for the design and construction of novel full spectrum photocatalysts.
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RARE METALS
·
2021
·Vol. 41
·期 3
·931-941
·
IF 4.003
Guo Jun,Wang Zi-Yuan,Zhu Yu-Ke,Chen Lin,Feng Jing,Ge Zhen-Hua
Bi 2 S 3 is composed of inexpensive and environmental friendliness elements, which has received extensive interests and been investigated as a promising mid-temperature thermoelectric material for years. Even pure Bi 2 S 3 possesses a high Seebeck coefficient and low thermal conductivity, its low electrical conductivity leads to a low figure of merit (ZT) value. In this work, Bi 2 S 3 fabricated by solid-state melting combined with spark plasma sintering can significantly enhance the thermoelectric performance via introducing small amounts of Cu and BiCl 3 . Cu interstitial doping and Cl substitution on S site result in a large increase in electrical conductivity. Additionally, the enhanced phonon scattering is derived from the point defects caused by element doping, the grain boundaries, and the small amount of secondary phase, which leads to the low thermal conductivity. Finally, a high ZT value of 0.7 is obtained at 773 K and reaches a large average ZT of 0.36 in the temperature range from room temperature (RT) to 773 K for the Cu-interstitial-doped and BiCl 3 -alloyed (Cu 0.01 Bi 2 S 3 + 0.175 mol% BiCl 3 ) sample. Furthermore, the mechanical properties of the Cu 0.01 Bi 2 S 3 + 0.175 mol% BiCl 3 sample are lower than those of other Bi 2 S 3 samples, which stem from the weak chemical bonding strength. Graphic abstract
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ANALYTICAL CHEMISTRY
·
2018
·
IF 6.042
Lin Cui,Juan Hu,Meng Wang,Xing-kang Diao,Chen-chen Li,Chun-yang Zhang
We demonstrate for the first time the development of a mimic peroxidase- and bismuth sulfide (Bi2S3) nanorod-based photoelectrochemical (PEC) biosensor for signal-on detection of polynucleotide kinase (PNK) on the basis of manganese-based mimic enzyme (MnME) catalytic precipitation. We use the hybrid film which consists of Bi2S3 nanorods and Au nanoparticles (AuNPs) as the immobilization matrix of capture probe. The capture probe on the modified electrode can specifically hybridize with the MnME@AuNPs-labeled signal probe to form the double-stranded DNA (dsDNA), generating a PEC biosensor. In the absence of PNK, MnME may stimulate the mimic enzyme catalytic precipitation onto the electrode surface, blocking the interfacial electron transfer and eventually leading to a low PEC signal. While in the presence of PNK, the dsDNA is phosphorylated and subsequently cleaved by lambda exonuclease to release the MnME@AuNPs conjugates from the electrode, leading to the decrease of catalytic precipitation on the surface of electrode and consequently the production of a high PEC signal. Notably, the MnME can be easily synthesized and possesses higher catalytic activity than the manganese-based mimic enzyme. This signal-on PEC biosensor exhibits high sensitivity with a detection limit of 1.27 × 10–5 U mL–1 and an extrembly large dynamic range of 5 orders of magnitude. Moreover, it can be applied for the screening of PNK inhibitors and accurate quantification of PNK activity in cancer cell extracts.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2017
·
IF 9.446
Yiqiu Shi,Xuyang Xiong,Shuoping Ding,Xiufan Liu,Qingqing Jiang,Juncheng Hu
We herein demonstrate the uniform porous hierarchical plate-like BiOCl/2D networks Bi 2 S 3 heterostructures realized by a facile two-step hydrothermal technique. The synthesis involved an anion exchange process by reacting pre-synthesized BiOCl irregular octagonal nanoplates with Na 2 S 2 O 3 ·5H 2 O in an aqueous solution. The experiment results revealed that the 3D plate-like heterostructures were composed of internal BiOCl and outside networks interwoven by 1D Bi 2 S 3 nanorods . Interestingly, the heterostructures had almost the same thickness and the bigger length compared to the precursor BiOCl. We proposed the possible formation mechanism of the composites which involved selective ion-exchange reaction, the following Ostwald ripening process and epitaxial growth . And the crystal lattice matching between the a- or b-axis of tetragonal BiOCl (a = b = 3.89 Å) and the a-axis of orthorhombic Bi 2 S 3 (a = 3.981 Å) could be responsible for the in-situ topotactic transformation. Due to the formation of hetero-nanostructures, the unique spatial architecture features and the existence of oxygen vacancies, the BiOCl/Bi 2 S 3 composites exhibited significantly extended photo-responsive range and improved photocatalytic activity for reduction of Cr VI under visible-light irradiation. Moreover, the possible mechanism of photocatalysis process was investigated. Our work is expected to inspire further attempts for hierarchical and unconventional hetero-nanostructures with unique spatial architecture, which is very promising for photocatalysis and other applications.
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