Small
·
2024
·
IF 13
Guonan Cui,Yanchun Yang,Lulu Bai,Rui Wang,Zhihui Gong,Yongjun Cao,Shuyu Li,Xiaogong Lv,Chengjun Zhu
A suitable interlayer between the Mo back electrode and kesterite absorber layer has been proven to have a positive effect on limiting the bulk defects of the absorber by the constitute diffusion. Here, a thin Bi 2 S 3 layer is used as the back-interface intermediate layer for the first time, this innovative approach allows for simultaneous modification of the back contact and reduction of bulk defects, resulting in improving the power conversion efficiency of the kesterite device from 9.66% to 11.8%. The evaporated Bi 2 O 3 thin films turn into the Bi 2 S 3 interlayers after sintering the Cu 2 ZnSnS 4 precursor thin films. The Bi 2 S 3 interlayer can inhibit the decomposition reaction of back contact and suppress the formation of the secondary phases. It can also optimize the Fermi level offset and promote the separation of the photoinduced carriers, resulting from its characteristic of high work function. Besides, a small part of the Bi element can diffuse into Cu 2 ZnSn(S, Se) 4 film and induce the crystal growth and restrain Zn-related defects, which is attributed to forming the low melting-point liquid BiSe x phase during the high-temperature selenization process. The conclusions highlight the bifunction of the thin Bi 2 S 3 intermediate layer, which can provide a new approach to improve the photoelectric conversion efficiency of kesterite solar cells.
研究领域:
材料科学
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能源科学
·
光伏技术
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 21
·10458-10469
·
IF 3.925
Cai Zhang,Li Zhou,Jing Zhang,Rui Dai,Pengrui Zhuang,Zhaoxiang Ye
Spectral computed tomography (CT) imaging agents are the key to spectral CT imaging with an unprecedented signal-to-noise ratio in vivo. However, there is still extreme lack of high-performance contrast agents. Herein, we present a facile and green strategy for the fabrication of uniform flower-like Bi2S3 nanoparticles (NPs) for spectral CT imaging and photothermal therapy in vivo for the first time. High-quality Bi2S3 NPs are obtained by simply heating the mixture of Bi(NO3)3 and glutathione in ethylene glycol without the need for adding toxic agents and inert gas protection. The proposed Bi2S3 NPs exhibit good monodispersity, high Bi content (60%), favorable water solubility, strong absorption in near-infrared windows, good biocompatibility and excellent CT and spectral CT imaging abilities due to the high K-edge energy of Bi (91 keV). Not only the accurate gastrointestinal tract spectral CT imaging but also the evaluation of the effect of intestinal obstruction surgery was achieved using the Bi2S3 NPs. Then effective tumor photothermal therapy in vivo was realized. This study proposes a facile and green method for the synthesis of high-quality Bi2S3 NPs, and proves the promising potential of Bi2S3 nanomaterial as a high-performance spectral CT imaging agent.
研究领域:
材料科学
·
医学成像
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纳米技术
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2016
·Vol. 4
·期 17
·2963-2971
·
IF 4.872
Yongbei Zhao,Qi Wang,Jianxiu Li,Hongmin Ma,Yong Zhang,Dan Wu,Bin Du,Qin Wei
In this paper, amidogen graphene (NH2-Gr) and Au nanoparticle (NP) functionalized cerium oxide (CeO2) NPs (NH2-Gr/Au@CeO2) have been synthesized. The prepared NH2-Gr/Au@CeO2 exhibits strong electrochemiluminescence (ECL) activity which could be quenched efficiently by bismuth sulfide (Bi2S3). Based on this principle, a novel sandwich ECL immunosensor was constructed for the detection of prostate specific antigen (PSA). NH2-Gr was used as a loading matrix for CeO2 NPs because of its superior conductivity and a large surface area. Au NPs were used to combine anti-PSA 1 (Ab1) to CeO2via the Au–NH2 covalent bond and meanwhile to enhance the sensitivity of the immunosensor. NH2-Gr/Au@CeO2 was used as the ECL response layer. Ag NP functionalized Bi2S3 was used to label the secondary antibody (Ab2). After a sandwich-type immunoreaction, a remarkable decrease of the ECL signal was observed. The signal-off sensor showed a wide linear range response from 1 pg mL−1 to 10 ng mL−1 with a low detection limit (LOD) of 0.3 pg mL−1. The applicability of the proposed ECL immunosensor was evaluated by detecting PSA in human serum samples.
研究领域:
生物医学工程
·
分析化学
✓ 已验证
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2021
·
IF 10.618
Jun-Tao Cao,Jing-Lu Lv,Xiao-Jing Liao,Shu-Hui Ma,Yan-Ming Liu
The photoelectrochemical (PEC) self-powered system has attracted great attention in disease detection. The determination of a simple and efficient approach for disease-related biomarkers is highly interesting and appealing. Herein, an ingenious visible light-induced membraneless self-powered PEC biosensing platform was constructed, integrating a signal amplification strategy for ultrasensitive split-type PEC bioanalysis . The system was comprised of a Bi 2 S 3 /BiPO 4 heterojunction photoanode and a platinum (Pt) cathode in a one compartment chamber. An alkaline phosphatase (ALP)-loaded sandwich immunoassay was used to generate the signal reporter ascorbic acid (AA) in a 96-well plate, and myoglobin (Myo) was used as a model protein. In the presence of AA, ferrocene (Fc), and Tris (2-carboxyethyl) phosphine (TCEP), the chemical-chemical redox cycling scheme was operated upon the initial oxidation of Fc by the holes in the Bi 2 S 3 /BiPO 4 photoelectrode , and Fc was regenerated from Fc + by AA. Subsequently, AA was regenerated by TCEP after its oxidation, and cycling was triggered. As a result, the proposed self-powered PEC sensing exhibited excellent performance with a wide linear range from 5.0 × 10 −13 to 1.0 × 10 −7 g/mL, and a low detection limit of 2.0 × 10 −13 g/mL for Myo. This work provided a new design of a redox cycling strategy in the self-powered PEC biosensor, and showed an effective approach for the clinical diagnosis.
研究领域:
生物传感技术
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医学诊断
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2021
·Vol. 9
·期 14
·3224-3234
·
IF 6.331
Yingjiao Wu,Yuqing Liang,Yandi Liu,Yijun Hao,Na Tao,Juan Li,Xiaoyi Sun,Ming Zhou,You-Nian Liu
An injectable gellan gum-based nanocomposite hydrogel (Bi2S3@GG) was designed for X-ray computed tomography (CT) imaging and photothermal/antiangiogenic therapy. The linear anionic polysaccharide gellan gum (GG) was used as a stabilizer, embedded with ultra-small bismuth sulfide (Bi2S3) nanodots (∼2 nm) through a one-pot synthesis method. The as-prepared Bi2S3@GG hydrogel displays excellent capability for both photothermal therapy (PTT) (with a photothermal conversion efficiency of 44.3%) and X-ray computed tomography (with an X-ray absorption coefficient of 51.5 HU L g−1), integrated with real-time monitoring drug retention and tunable therapeutic functions. After the incorporation of sorafenib (SF), the hydrogel shows a sustained release of SF over 15 days. A tumor suppression rate of 98.2% is shown at day 22 postinjection in the mice received the combined treatments of photothermal/antiangiogenic therapy. In contrast, tumor growth and recurrence are observed in the single treatment. Our work presents a new strategy to construct a multifunctional hydrogel platform for a safe and precise antitumor therapy.
研究领域:
生物医学工程
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癌症治疗
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材料科学
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Haimeng Huang,Jianfeng Zhang,Chunmei Tang,Anyu Li,Tianmeng Zhang,Huapeng Xue,Daofeng Zhang
Photocatalytic sterilization has been recently realized as a competitive strategy for effective water purification just using sunlight, for which the new photocatalytic materials play the key role. In this study, a novel Z-scheme heterojunction material MXene/TiO 2 /Bi 2 S 3 was proposed, where TiO 2 nanoparticles and Bi 2 S 3 microspheres were uniformly distributed on the MXene nanosheets through facile hydrothermal oxidation and ultrasonic dispersion. With this Z-scheme heterojunction MXene/TiO 2 /Bi 2 S 3 , effective and quick sterilization of both Gram-negative bacteria and positive bacteria in only 120 min was realized. Especially, the apparent reaction constant for S. aureus reached 0.01659 min −1 , substantially higher than MXene and other related materials in literature. This could be ascribed to the narrow band gap (1.04 eV), the wide range of light absorption range (420 nm), and the low impedance of the as-obtained composite, facilitating the transfer and separation of photo-generated charges, which was also validated through the first-order kinetic model and DFT simulation calculations. Thus, the reactive species produced by photocatalysis effectively disrupted the defense action of the bacteria by damaging bacterial membrane structure, and reducing enzyme activity as well as cellular metabolism. This efficient and low-cost material for water disinfection has a great potential for practical applications in the future.
研究领域:
环境科学
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材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2022
·Vol. 38
·期 6
·1387-1393
·
IF 2.726
Wu Zhifang,Liang Zhishan,He Ziqian,Wang Tianqi,Xiao Ren,Han Fangjie,Zhao Zhengzheng,Han Dongfang,Han Dongxue,Niu Li
We report a photoelectrochemical(PEC) sensor for selective detection of ascorbic(AA) by introducing Z-scheme Bi 2 S 3 @nitrogen doped graphene quantum dots(Bi 2 S 3 @NGQDs) heterojunctions as efficient photoactive species. The Bi 2 S 3 @NGQDs were successfully prepared by a simple hydrothermal process, and the microstructures and components were investigated by various characterized techniques. The photocurrent of the Bi 2 S 3 @NGQDs-based sensor increased significantly in the presence of AA and showed excellent selectivity and stability for AA detection in the presence of some other antioxidants and small molecules. A wide linear range of 0.1–5 µmol/L and 5–1380 µmol/L was achieved for the AA detection with a detection limit of 36 nmol/L( S / N =3). Moreover, the proposed PEC sensor achieved the determination of AA in real red peppers and commercially available vitamin C tablets samples.
研究领域:
分析化学
·
生物医学工程
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Xiaoping Li,Xinpeng Wang,Lei Dong,Qing Zou,Chunlin He,Yanqiu Zhu,Toyohisa Fujita,Changzhong Liao,Cheng-Wei Kao,Ying-Rui Lu
As the main fission products of nuclear power plants, radioactive iodine isotopes are of great concern because of their great harm to public safety. In this work, a nanocomposite of bismuth sulfide coated with the electrospinning SiO2 nanofibers with a diameter of about 280 nm nanostructure-based membranes (Bi2S3@SiO2) was successfully prepared to dispose of gaseous iodine. Results showed that the adsorption capacity of Bi2S3@SiO2 for iodine can be up to 1180 mg g–1, which is higher than the commercial silver-exchanged zeolite (AgZ) and other bismuth-based adsorbents. Chemisorption is the major adsorption behavior of iodine capture. Thermogravimetric analysis results demonstrated that the Bi2S3@SiO2 nanocomposites were stable up to 300 °C before and after capturing iodine. X-ray diffraction results revealed that BiSI was initially formed and then transformed to BiI3. Scanning electron microscopy revealed that the sulfur element remains in the samples after interacting with iodine, and X-ray absorption near-edge spectra further confirmed that its oxidation states are a mixture of S0, S3+, and S6+. The oxidation states of bismuth and iodine are Bi3+ and I–, respectively, revealed by X-ray photoelectron spectroscopy. The reactions between Bi2S3@SiO2 nanocomposites and I2 vapor are as follows: I2 was reduced to be I– and the BiI3 crystalline phase is the final form; S2– in Bi2S3 was oxidized to higher valences (S0, S3+, and S6+), and amorphous phases are their final forms. The research results demonstrated that the nanostructure-based membranes prepared by this work would be a promising candidate nanomaterial for capturing iodine in the plant off-gas streams.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Jingjing Wang,Ruonan Liu,Yuxin Qiao,Shuxin Liu,Chuanguang Qin
In this work, flower-like Bi 2 S 3 was prepared by hydrothermal method using different solvents, and materials with better performance were selected. Graphene quantum dots (GQD, which is rich in specific amino groups) was prepared by aqueous phase fusion technology. Ultimately, a straightforward one-step hydrothermal process was used to successfully manufacture composite materials in order to build GQD(4)/Bi 2 S 3 heterostructures. The study results have shown that the H 2 production efficiency of 2% GQD(4)/Bi 2 S 3 is the best, and its photocatalytic hydrogen production efficiency within 3 h is 5.92 times that of GQD(4) and 3.03 times that of Bi 2 S 3 . The H 2 O 2 production and tetracycline (TC) degradation efficiency of 2% GQD(4)/Bi 2 S 3 are the best, while the methylene blue (MB) degradation efficiency of 1% GQD(4)/Bi 2 S 3 is relatively better. The research results show that as a perfect combination of GQD(4)/Bi 2 S 3 heterostructures, it offers a productive plan for eliminating organic pollutants in water and producing clean oxidant and hydrogen energy.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yaodong Yang,Shuo Qu,Guiqi Gao,Huifeng Yuan,Jialong Wang,Wei-Feng Rao,Jianting Li,Yanxi Li
Catalytic systems that couple pollutant degradation with hydrogen evolution have attracted attention due to their potential to simultaneously address two key challenges. To achieve this goal this paper studies a piezoelectric-driven synchronous redox system that realizes a synergistic effect of organic pollutant degradation and hydrogen generation—effectively producing hydrogen from the decomposition of organic wastewater. By in-situ growing Bi 2 S 3 on SrBi 4 Ti 4 O 15 (SBTO), a SBTO@Bi 2 S 3 heterojunction is formed, the interfacial contact between the two phases is optimized, significantly enhancing the overall catalytic performance in both pollutant degradation and water splitting for hydrogen production. Using methylene blue (MB) as an organic pollutant substitute for conventional hydrogen evolution sacrificial agents (e.g., methanol), the SBTO@Bi 2 S 3 catalyst achieves both efficient MB degradation and a hydrogen evolution rate of up to 3.28 mmol g −1 h −1 . Mechanistic studies indicate that methylene blue (MB) can effectively capture holes during its efficient degradation, suppressing electron-hole recombination and simultaneously promoting proton reduction to generate hydrogen. Meanwhile, electron consumption during hydrogen evolution also mitigates electron-hole recombination, further enhancing MB degradation and establishing a mutually reinforcing cycle. This work fills an important gap in the field of piezocatalysis by demonstrating a coupled process of wastewater remediation and hydrogen evolution, offering a new strategy for both environmental restoration and sustainable energy production.
研究领域:
材料科学
·
环境催化
·
能源化学
·
纳米材料
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2016
·
IF 3.15
Ya Liu,Yidan Shi,Xiang Liu,Hexing Li
In this paper, novel photocatalyst Bi 2 S 3 /TiO 2 /RGO composites were successfully fabricated by a facile solvothermal method. During this process, TiO 2 was coupled with Bi 2 S 3 to generate Bi 2 S 3 sensitized TiO 2 nanoparticles, and graphene oxide (GO) was reduced to reduced graphene oxide (RGO), which was uniformly covered with plenty of Bi 2 S 3 and TiO 2 . The as-prepared samples were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), specific surface areas (BET), X-ray diffraction (XRD), Fourier transform infrared (FTIR), Raman, X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectroscopy (UV–vis DRS) and photoluminescence (PL) spectroscopy. The results confirmed that Bi 2 S 3 could act as an optical filter, which could be activated under visible light. And the introduction of Bi 2 S 3 could improve the response of TiO 2 nanoparticles for visible light. In addition, the Bi 2 S 3 /TiO 2 in Bi 2 S 3 /TiO 2 /RGO composites had more uniform dispersion on the surface of graphene with less agglomeration in comparison with the Bi 2 S 3 /TiO 2 . Graphene can provide conductive electron channels for separation of the electrons and inhibit the recombination of electrons and holes. Furthermore, the photocatalytic activity of Bi 2 S 3 /TiO 2 /RGO composites was evaluated through the degradation of methylene blue (MB) under visible light irradiation. The Bi 2 S 3 /TiO 2 /RGO composites showed the highest photocatalytic activity among the referred photocatalysts, with about 3-fold increase in photocatalytic efficiency over TiO 2 nanoparticles. The mechanism of high photocatalytic activity was also discussed.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jiafeng Xi,Xiaojuan Liu,Liang Zhang,Zuwang Zhang,Junchen Zhuo,Ting Du,Yajie Zhang,Jinyou Duan,Hongliang Dong,Jianlong Wang
Within the illustrious and renowned MXene family, Niobium carbide (Nb 2 C) has astounded researchers by exhibiting an extraordinary level of photothermal conversion efficiency and photothermal stability, all while maintaining the possibility of biodegradability. However, the absence of band gaps hindered Nb 2 C as an attractive photoresponsive material for sterilization purposes. To overcome this obstacle, we engineered a Schottky heterojunction in Nb 2 C by introducing Ru and Bi 2 S 3 based on the work function theory to generate an internal electric field (IEF) in Ru@Bi 2 S 3 /Nb 2 C, thus enhancing the photocatalytic sterilization performance by improving the charge transfer efficiency. The strategic doping of Ru also improved the carrier separation as an electron trap, apart from enhancing the light absorption efficiency by exploiting the Localized Surface Plasmon Resonance (LSPR). The results of Ultraviolet Photoelectron Spectroscopy (UPS) and X-ray photoelectron spectroscopy (XPS) divulge the stark difference in work function, which facilitates the directional transfer of carrier and subsequently augments the formation of Schottky heterojunction. This unique structure which is beneficial to the generation of reactive oxygen species (ROS). As a result, the in vitro sterilizing efficiency of the Ru@Bi 2 S 3 /Nb 2 C exceeds 99.87%, and in vivo experiments demonstrated wound healing effects in mouse wound models. These results have confirmed the significant implications of Schottky heterojunction for the use of Nb 2 C in the biomedical sector.
研究领域:
材料科学
·
生物医学工程
·
光催化技术
✓ 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）