INORGANIC CHEMISTRY
·
2019
·
IF 4.85
Junli Wang,Linjie Li,Hongsong Yu,Fan Guan,Dan Wang
Nanoscale chemical transformations based on partial cation exchange reactions are known as a component-increased, shape-maintaining means for the design and tunable preparation of ternary or multinary metal chalcogenide compounds. Herein, we present a new material couple, Bi2S3–AgBiS2, to detail the binary–ternary chemical transformation via partial cation exchange and its reaction thermodynamics and kinetics. The preformed Bi2S3 nanorods (NRs) act as both the reactant and the parent template, within which the partial exchange of Bi3+ with Ag+ cations proceeds under a silver-rich, diffusion-controlled regime, leading to the formation of energetically favorable AgBiS2. The NR shape preservation involving sulfur sublattice rearrangement is due to the proper diameter thickness (∼12 nm) of parent Bi2S3 NRs and the rapid establishment of equilibrium-phase AgBiS2, as supported by X-ray diffraction measurements and the pseudobinary Ag2S–Bi2S3 phase diagram. Interestingly, the finding of a AgBiS2–Bi2S3–AgBiS2 intermediate with axially segmented heterostructures reveals the real NR-to-NR conversion trajectory and the shape-induced exchange reaction anisotropy at the ends and middle of Bi2S3 NRs. Additionally, the resultant AgBiS2 NRs with a measured band gap of ∼0.86 eV exhibit potential for photoelectronic applications because of their impressive visible–near-infrared absorption and photoconductivity.
研究领域:
材料科学
·
化学
·
纳米技术
·
光电技术
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产品关联
DOI
PubMed
高影响因子
Biomaterials Advances
·
2024
·
IF 5.5
Dongliang Huo,Ting Liu,Kangkang Huang,Changhui Que,Shuoyan Jiang,Yuxia Yang,Shaozao Tan,Langhuan Huang
Biofilm-mediated implant-associated infections are one of the most serious complications of implantation surgery, posing a grave threat to patient well-being. Effectively addressing bacterial infections is crucial for the success of implantation procedures. In this study, we prepared a bismuth sulfide silver@carbon quantum dot composite coating (AgBiS 2 @CQDs/Ti) on a medical titanium surface by surface engineering design to treat implant-associated infections. The photocatalytic/photothermal activity test results confirmed the excellent photogenerated ROS and photothermal properties of AgBiS 2 @CQDs/Ti under near-infrared laser irradiation. In vitro antibacterial and in vivo anti-infection experiments showed that the coating combined with photodynamic and photothermal therapies to eradicate bacteria and disrupt mature biofilms under 1064 nm laser irradiation. Consequently, AgBiS 2 @CQDs/Ti shows promise as an implant coating for treating implant-associated infections post-surgery, thereby enhancing the success rate of implantation procedures. This study also provides a new idea for combating implant-associated infections.
研究领域:
材料科学
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生物材料
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纳米技术
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生物医学工程
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传染病学
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产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2023
·
IF 15.1
Liang Xiao,Benjin Chen,Wanni Wang,Tian Tian,Haisheng Qian,Xiaohu Li,Yongqiang Yu
Radiotherapy (RT), a widely used clinical treatment modality for cancer, uses high-energy irradiation for reactive oxygen species (ROS) production and DNA damage. However, its therapeutic effect is primarily limited owing to insufficient DNA damage to tumors and harmful effects on normal tissues. Herein, a core-shell structure of metal–semiconductors (Au@AgBiS 2 nanoparticles) that can function as pyroptosis inducers to both kill cancer cells directly and trigger a robust anti-tumor immune against 4T1 triple-negative murine breast cancer and metastasis is rationally designed. Metal-semiconductor composites can enhance the generation of considerable ROS and simultaneously DNA damage for RT sensitization. Moreover, Au@AgBiS 2 , a pyroptosis inducer, induces caspase-3 protein activation, gasdermin E cleavage, and the release of damage-associated molecular patterns. In vivo studies in BALB/c mice reveal that Au@AgBiS 2 nanoparticles combined with RT exhibit remarkable antitumor immune activity, preventing tumor growth, and lung metastasis. Therefore, this core-shell structure is an alternative for designing highly effective radiosensitizers for radioimmunotherapy.
研究领域:
纳米技术
·
肿瘤学
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免疫治疗
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放射生物学
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产品关联
DOI
PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2022
·
IF 6.911
Rongjie Li,Chenxi Wang,Yilin Wang,Jia Chen,Yaqi Yang,Chunyan Li,Yixi Xie,Pengcheng Zhao,Junjie Fei
As an emerging detection technology , photoelectrochemical sensors have been widely noticed for their unique technical features. Among others, the technology has been widely used in the fields of drug, biological antibody or antigen and contaminant detection. Secondly, acetaminophen, as a novel environmental pollutant , is difficult to be degraded in the ecosystem, which in turn causes serious impacts on the ecosystem. Therefore, in this work, we designed a photoelectrochemical sensor based on a composite film of flower-like SnS 2 , sea urchin-like AgBiS 2 and graphene oxide for the detection of acetaminophen in water samples. Among them, graphene oxide, as a two-dimensional carbon-based material, can immobilize other photoelectric materials well. In addition, the flower-like SnS 2 and sea urchin-like AgBiS 2 can enhance the intensity of the photoelectric response due to their synergistic effect. Notably, the combination of graphene oxide with SnS 2 and AgBiS 2 revealed an exponential increase in the photoresponse intensity, indicating that SnS 2 /AgBiS 2 /GO has a satisfactory photoresponse intensity. At the same time, the photoelectrochemical sensor exhibited sensitive detection performance (LOD = 4 nM) and a wide detection range (0.01–50 μM) for acetaminophen under optimal detection conditions. Moreover, it also showed excellent detection performance in the detection of actual water samples, indicating that it can be applied to the detection of acetaminophen in lakes.
研究领域:
环境科学
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分析化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 68
·39203-39207
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IF 2.936
Chun Hin Mak,Jiasheng Qian,Lukas Rogée,Wai Kin Lai,Shu Ping Lau
AgBiS2 nanocrystals are emerging optoelectronic materials due to their solution-processability, earth abundance and non-toxic properties. We report a facile method to prepare AgBiS2 nanocrystals in ambient conditions. The nanocrystals are of high crystallinity and without byproducts, which make them suitable for solution processable optoelectronic devices. They were incorporated into graphene transistors for their near infrared detection application. Photodetectors with a high photo-responsivity of 105 A W−1 for 895 nm wavelength at a low operation voltage of 0.1 V were demonstrated.
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DOI
高影响因子
ACS Applied Electronic Materials
·
2024
·
IF 4.3
Defei Yuan,Zeyao Han,Fa Cao,Xiao Liu,Mei Liu,Li Zhang,Shuang Cao,Junyu Li,Tao Zeng,Yunxia Chen,Xiaobao Xu,Bin Sun
AgBiS2 quantum dots (QDs) have been undergoing rapid development in recent years because of their environmental friendliness, abundant elemental reserves, and high optical absorption coefficients. However, previously reported ligand exchange methods for AgBiS2 CQDs have been ineffective in passivating surface defects, thereby limiting their potential for optoelectronic applications. In this study, we propose a facile solution-phase ligand exchange method assisted by mixed halides for the AgBiS2 CQDs. This approach, involving AgCl and other halides, effectively suppresses surface defects and enhances the photodetector (PD) performance. The PD exhibits significantly improved optoelectronic characteristics, with a responsivity of 0.27 A W–1 and a low noise power density of 6.52 × 10–9 A Hz–0.5, achieving the highest specific detectivity of 2 × 1012 Jones compared to previous reports of AgBiS2 CQD PDs. This mixed halide passivation strategy introduces new insights into enhancing the performance of AgBiS2 CQDs in PD applications.
研究领域:
纳米材料
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光电子学
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量子点
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半导体物理
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光电探测
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 34
·46431-46444
·
IF 7.8
Luo Lian,Jiang Chenenze,Cheng Jiang,Chen Jiasheng,Zhang Liuyang,Wu Lifang,Wang Shenghao,Li Lu
AgBiS 2 has emerged as a promising optoelectronic material due to its broad spectral response and strong light absorption. However, the current use of high-boiling solvents and organic buffers restricts fundamental studies and further performance optimization of AgBiS 2 's intrinsic properties. In this study, we develop an organic buffer-free AgBiS 2 photodetector prepared using a low-temperature ultrasonic spray pyrolysis technique. Our theoretical analysis revealed that oxygen doping alters the optoelectronic characteristics by enhancing the density of states near the Fermi level, leading to consequent severe nonradiative charge carrier recombination. By incorporating excess thiourea while maintaining optimal substrate temperature for enhanced crystallinity, we successfully suppress oxygen defects and consequently improve photodetection performance. The optimized device exhibits a high responsivity of 0.046 A W −1 at 1050 nm, a low noise level (<8.5 × 10 −19 A 2 Hz −1 ), and a fast response time (0.07 μs rise, 0.60 μs decay). Benefiting from the rapid response, the photodetector delivers high-resolution imaging with sharp edge definition. This work eliminates the interference of organic buffer layers to directly reveal how oxygen defect modulation affects the intrinsic optoelectronic properties of AgBiS 2 , offering a scalable pathway for high-performance, solution-processed photodetectors.
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产品关联
DOI
PubMed
高影响因子
ACS Applied Electronic Materials
·
2026
·
IF 4.7
Junlin Wang,He Li,Tianyu Luo,Sisi Liu,Xiaoyan Wen,Haifei Lu,Ming-Yu Li
Abstract Colloidal quantum dot (CQD) infrared (IR) photodetectors exhibit great application potential in the fields of optical communication, environmental monitoring, imaging, and wearable sensing. Specifically, AgBiS2 CQD IR photodetectors have garnered extensive attention because of their excellent photoelectric properties, solution-processability, as well as non-toxicity and environmental friendliness. However, the high trap density and relatively low carrier mobility of AgBiS2 CQDs have limited their development in high-performance IR photodetectors. Herein, a representative 2D transition carbide, Ti3C2Tx, is introduced into the AgBiS2 CQD films to develop enhanced IR photodetectors based on MXene/AgBiS2 hybrid films. By finely controlling of the MXene additive concentration, this combination possibly helps reduce trap state density in AgBiS2 films to suppress carrier nonradiative recombination and simultaneously constructs an efficient conductive pathway in AgBiS2 films to enhance the extraction of photo-generated carriers. Consequently, compared to the pristine AgBiS2 CQD devices, the MXene/AgBiS2 CQD-based infrared photodetector exhibits significant promotion in the responsivity, EQE, and estimated normalized detectivity under a broad band from 500 to 900 nm, demonstrating an alternative method for tailoring the performance of AgBiS2 CQD optoelectronic devices.
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Chengyao Yang,Ruchao Gong,Zihan Wang,Lanyu Nie,Jialin Yao,Zhicheng Wang,Yong Dai,Huafei Guo,Sai Jiang,Jinrong Huang,Qixuan Zhong,Sheng Li
Reliable perception in complex and dynamically degraded environments remains a central challenge for both biological nervous systems and next-generation embodied intelligent systems. Biological organisms mitigate uncertainty via complementary bimodal perception, where various sensory modalities jointly sustain adaptive behaviors. Inspired by the star-nosed mole, we report an artificial visuo-tactile afferent nerve based on an AgBiS 2 quantum dot (QD)/IGZO heterojunction optoelectronic synaptic transistor. The artificial nerve supports sensory acquisition, neural-like signal encoding, synaptic modulation, and adaptive actuation within a unified neuromorphic framework. Benefiting from interfacial carrier separation and persistent photoinduced charge dynamics, this synaptic transistor exhibits reconfigurable synaptic plasticity with intrinsically coupled bimodal synaptic modulation. External visuo-tactile stimuli are first transformed into unified neuromorphic responses and subsequently mapped to threshold-governed robotic behaviors, including directional motion, turning, and grasping. Device-informed results demonstrate that device-enabled bimodal cooperation enhances recognition robustness under degraded perceptual conditions. This work establishes a compact, physically grounded framework integrating bimodal perception and adaptive intelligence, with potential implications for next-generation bioinspired neuromorphic systems.
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Hongshan Jia,Yingqing Zhan,Fei Zhu,Ximin Chen,Xinyue Duan,Ning Zhang,Jie Liu,Yinlong Li
Nano-structured hydrogel with unique anti-oil fouling property exhibits big advantage in oil/water separation, but its application in complex oily wastewater (contain oils, organic matter, bacteria, etc.) cleanup is hampered by the insufficient capabilities in multi-antifouling and synergistic treatment. Herein, we constructed the amino-rich NH 2 -AgBiS 2 /PANI (polyaniline)-g-C 3 N 4 based multi-functional hydrogel functional layer onto the polyacrylonitrile (PAN) fiber membrane via polyphenol-mediated chitosan gelation and vacuum-assisted self-assembly techniques. The unique honeycomb-like structure and super-wetting feature synergistically contributed to the powerful oil resistance and flux breakthrough of composite membrane. Such membrane achieved superior permeability (up to 3558 L −1 m −2 h −1 ) for various SDS-stabilized oil-in-water emulsions and remarkable synergistic treatment efficiency of multicomponent pollutant-oil-water emulsion. The rational design of hydrogel layer on membrane surface intensified the photo-response ability and multiple electron transport channels, which offered the favorable photocatalytic self-cleaning performance towards degradation of organic dyes. According to the free radical quenching and EPR experiments, the photocatalytic mechanism was proposed. In addition, the inhibition rate of E. coli could reach 100 % under illumination of 24 h. Therefore, the integration of ultra-low oil adhesion, photocatalytic self-cleaning, and antibacterial features endows membrane with exceptional multiple anti-fouling performance, exhibiting unique advantages over traditional membranes in handling complex membrane fouling issues.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）