MICROCHEMICAL JOURNAL
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2026
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IF 5.1
Tingting Wu,Xuejing Liu,Zhenyuan Xing,Dawei Fan,Zhen Yu,Huan Wang,Qin Wei
In this work, a sensitive and reliable photoelectrochemical (PEC) sensor array integrated on a single electrode was developed for the spatially addressable detection of neuron-specific enolase (NSE), using Bi 2 O 3 /Bi 2 S 3 /Ag 2 S nanodendrites as the substrate electrode material. The Bi 2 O 3 /Bi 2 S 3 structure was grown in situ on an indium tin oxide (ITO) electrode to form large-area nanoarrays, whose uniform distribution helps minimize performance variations across different regions and enables light-addressable detection. Furthermore, Ag 2 S, a narrow-bandgap semiconductor with excellent photoelectric properties, was incorporated into the Bi 2 O 3 /Bi 2 S 3 system to enhance the photoelectrochemical response. The resulting Bi 2 O 3 /Bi 2 S 3 /Ag 2 S-modified ITO electrode was partitioned into five independent regions using insulating stickers, allowing addressable and continuous detection of multiple samples. Since the entire sensor array was fabricated in a single preparation step, inter-regional variability was significantly reduced, enabling the application of a self-calibration strategy to further improve sensitivity and accuracy. Under optimal conditions, the PEC sensor array detected NSE over a concentration range of 0.01–100 ng/mL, with a detection limit of 2.0 pg/mL (S/N = 3). The sensor also exhibited high selectivity, stability, and reproducibility, demonstrating its strong potential for real-sample applications.
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高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Xi Chen,Wenwen Zhang,Lixiang Zhang,Luping Feng,Jiangwei Wen,Jianjing Yang,Chunxian Zhang,Jie Jiang,Hua Wang
A photocatalyst of Ag 2 S/AgI-Bi 2 S 3 /BiOI was synthesized with Z -scheme heterojunctions simply by the S 2− -I − anion exchange route showing broad visible light response and enhanced photogenerated carriers properties. The yielded Ag 2 S/AgI-Bi 2 S 3 /BiOI could feature the reactive active sites of Bi 2 S 3 /BiOI and Ag 2 S/AgI heterojunctions , serving as the photogenerated electron donors and photogenerated electron acceptors , respectively. Ag bridges were generated to ensure the construction of Z -scheme strategy, which further improved the migration direction of charge carriers in nanocomposites. Moreover, the analysis of photoluminescence spectra and electrochemical impedance spectroscopy could testified the functions of heterojunctions, which dramatically achieved the enhanced separation and transferring capacity of photogenerated electron-hole pairs in photocatalyst, respectively. In addition, Ag 2 S/AgI-Bi 2 S 3 /BiOI with large specific surface area facilitated the efficient photocatalytic removal of salicylic acid (SA) (up to 89.2%) under visible light. Favorable photocatalytic production of hydrogen peroxide (H 2 O 2 ) were obtained in pure water driven by the visible light. Besides, by the results of capture experiments, DMPO spin trapping ESR spectra and band structures analysis, the Z -scheme manner of the nanocomposites could promote the reduction ability of photo-generated electrons so as to produce numerous ·O 2 − during the photocatalytic reactions toward the photocatalytic SA removal and H 2 O 2 production.
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高影响因子
CERAMICS INTERNATIONAL
·
2023
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IF 5.2
Yu Wang,Jing Feng,Zhen-Hua Ge
Bismuth sulfide-based thermoelectric materials have attracted considerable interest owing to their abundance of raw materials and non-toxicity. However, their poor electrical properties, particularly their conductivity, have limited their practical applications. In this work, a melting method and spark plasma sintering were employed to synthesize bulk Bi 2 S 3 materials. The dopant MoCl 5 was used to regulate the electrical properties of Bi 2 S 3 . The results showed that Mo can significantly enhance the conductivity of Bi 2 S 3 compared to other transition metals. The doped sample exhibited an almost two-orders-of-magnitude rise in conductivity relative to the Bi 2 S 3 sample in its pure form. Due to its superior conductivity, the Bi 2 S 3 +1 wt% MoCl5 sample achieved an excellent power factor of 550 μW m −1 K −1 which is the maximum ever reported in the Bi 2 S 3 system. Simultaneously, the ZT value of this sample approached 0.70 at 773 K, which is a six-fold improvement compared to the pristine sample. Density functional theory was applied to understand the electronic structure changes of the Mo-doped sample, which revealed that trace amounts of MoCl 5 doping could significantly boost the density of states in the vicinity of the conduction band and shift the Fermi level to the valence band, leading to a reduction in the bandgap and an increase in free electrons. This work offers new insights into the role of Mo elements in thermoelectric materials and provides a good strategy for augmenting the thermoelectric figures of merit of other n-type thermoelectric materials with inadequate electrical conductivity in the future.
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高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Jialong Li,Fanming Meng,Hao Wu,Han Zhang
The construction of Z-scheme heterostructures is one of the most effective strategies to improve photocatalytic efficiency. In this study, Ag + doped ZnIn 2 S 4 /Bi 2 S 3 composite nanosphere materials with different mass fractions of Bi 2 S 3 were successfully synthesized by the solvothermal method. Systematic studies showed that the construction of heterogeneous structures and Ag + doping could extend the optical absorption edge and provide more active sites. More importantly, it was shown by photoelectrochemical and PL spectroscopy tests that Ag: ZnIn 2 S 4 /Bi 2 S 3 has strong visible light absorption and photocarrier transfer capability. In addition, the Z-scheme mechanism of Ag: ZnIn 2 S 4 /Bi 2 S 3 was investigated by electron spin response (ESR) and active substance capture experiments, which confirmed that both superoxide radicals( O − 2 ) and hydroxyl radicals( OH) were involved in the photocatalytic reaction. The results showed that the optimized Ag: ZnIn 2 S 4 /2.5%Bi 2 S 3 degraded TC by 89.7%, 1.87 times higher than the original ZnIn 2 S 4 . This work provides a promising method for the construction of Z-scheme heterojunctions based on ZnIn 2 S 4 .
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高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2022
·Vol. 40
·期 11
·1441-1450
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IF 3.815
Tong Li-Fen,He Liang,Zhan Chen-Hao,Xia Yun-Qing,Liu Xiao-Bo
High-quality film capacitors are widely used in many fields such as new energy vehicles, electronic communications, etc., due to their advantages in wide frequency response and low dielectric loss. The dielectric film is a crucial part of the film capacitor, and its properties have an important impact on the performance and use conditions of the film capacitor. In this work, a novel high-temperature-resistant dielectric film was prepared. Firstly, the Bi 2 S 3 /rGO-CN fillers were prepared by hydrothermal method combined with cyanation treatment, and then added to the poly(arylene ether nitrile) (PEN) matrix to prepare the dielectric film materials (PEN/Bi 2 S 3 /rGO-CN). After high temperature treatment, the fillers Bi 2 S 3 /rGO-CN reacted with the PEN matrix, and the composites materials transformed into a thermosetting hybrid film (PEN-Bi 2 S 3 /rGO) with gel content of 97.88%. The prepared hybrid dielectric films did not decompose significantly before 400 °C, and showed a glass transition temperature ( T g ) of up to 252.4 °C, which could increase the effective use temperature of the materials. Compared with the composite films without heat treatment, they exhibit better mechanical properties, with further improvement in tensile strength and elastic modulus, and a decrease in elongation at break. The dielectric constant of the hybrid films can be up to 6.8 while the dielectric loss is only about 0.02 at 1 kHz. Moreover, the hybrid films showed excellent dielectric stability during temperature changes, and remain relatively stable before 250 °C, which is suitable as a high-temperature-resistant high-dielectric material and is more advantageous for practical applications.
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高影响因子
ACS Applied Nano Materials
·
2022
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IF 6.14
Guowen Qian,Tianci Wen,Yang Shuai,Xiongting Wu,Zhikui Zeng,Shuping Peng,Cijun Shuai
Photodynamic antimicrobial therapy via producing ROS based on light-responsive nanoparticles has attracted worldwide attention because of the high selectivity and low side effects. However, biofilms and bacterial membranes provide a natural barrier to prevent the penetration of ROS, which impairs the photodynamic antibacterial efficiency of nanoparticles. Photothermal therapy is an effective strategy against biofilms and bacterial membranes because high temperature can destroy the biofilm structure and enhance the membrane permeability. Herein, Bi2S3 nanorods were anchored on the surface of zinc-doped g-C3N4 (ZnCN) nanosheets to construct a ZnCN-Bi2S3 nanocomposite; then, it was incorporated into poly-l-lactic acid and prepared into scaffolds by the selective laser sintering technology. Bi2S3 nanorods not only endowed the scaffold with an excellent photothermal property but also strengthened the photodynamic effect of ZnCN nanosheets after forming the nanocomposite. The results showed that this nanocomposite had a lower recombination rate of photogenerated electron–hole pairs and produced higher photocurrent compared to those of the g-C3N4 nanosheets and Bi2S3 nanorods. The scaffold destroyed the biofilm and elevated the bacterial membrane permeability significantly and finally achieved 98.5% antibacterial rate for Staphylococcus aureus and 96.3% antibacterial rate for Pseudomonas aeruginosa. Encouragingly, the scaffold could also promote chondrogenic differentiation because of the continuous release of Zn ions. The scaffold containing ZnCN-Bi2S3 nanocomposites possessed excellent antimicrobial and cartilage regeneration functions, which displayed great potential in treating tracheal injuries.
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高影响因子
Frontiers in Chemistry
·
2022
·
IF 5.545
Xiao Hui-Jin,Liao Xiao-Jing,Wang Hui,Ren Shu-Wei,Cao Jun-Tao,Liu Yan-Ming
A novel signal-increased photoelectrochemical (PEC) biosensor for l-cysteine (L-Cys) was proposed based on the Bi2MoO6–Bi2S3 heterostructure formed in situ on the indium–tin oxide (ITO) electrode. To fabricate the PEC biosensor, Bi2MoO6 nanoparticles were prepared by a hydrothermal method and coated on a bare ITO electrode. When L-Cys existed, Bi2S3 was formed in situ on the interface of the Bi2MoO6/ITO electrode by a chemical displacement reaction. Under the visible light irradiation, the Bi2MoO6–Bi2S3/ITO electrode exhibited evident enhancement in photocurrent response compared with the Bi2MoO6/ITO electrode, owing to the signal-increased sensing system and the excellent property of the formed Bi2MoO6–Bi2S3 heterostructure such as the widened light absorption range and efficient separation of photo-induced electron–hole pairs. Under the optimal conditions, the sensor for L-Cys detection has a linear range from 5.0 × 10−11 to 1.0 × 10−4 mol L−1 and a detection limit of 5.0 × 10−12 mol L−1. The recoveries ranging from 90.0% to 110.0% for determining L-Cys in human serum samples validated the applicability of the biosensor. This strategy not only provides a method for L-Cys detection but also broadens the application of the PEC bioanalysis based on in situ formation of photoactive materials.
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 20
·17688-17702
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IF 2.22
Liu Jun,Hui Qian,Chang Meng-Jie,Cui Wen-Na,Xi Tong,Wang Lin-Da,Sun Meng,Yuan Bin,Ni Fu-Rong
Herein, novel fibrous Bi 4 Ti 3 O 12 /Bi 2 S 3 /MoS 2 is constructed by a simple one-step methodology for photocatalytic degradation of RhB dyes. Bi 4 Ti 3 O 12 /Bi 2 S 3 /MoS 2 hybrid fibers were facilely prepared by direct hydrothermal growth of MoS 2 nanosheets on electrospun Bi 4 Ti 3 O 12 nanofiber surface, during which rod-like Bi 2 S 3 was formed by in-situ ion exchange reaction between BTO and S source. The MoS 2 nanosheets with several-layer thickness uniformly are coated both on the BTO and Bi 2 S 3 surface. Remarkable enhancement of visible light absorption and photo-generated charge separation in Bi 4 Ti 3 O 12 /Bi 2 S 3 /MoS 2 are achieved compared with the bare BTO nanofibers. By changing the weight ratio of Mo/S and the precursor dosage of MoS 2 , the optimized BM-150/250 sample presents 2.3 and 4.1 times higher of the photodegradation efficiency and apparent reaction rate constant, respectively, than that of pure BTO fibers after 120-min irradiation under visible light. The system pays an efficient pathway to establish ternary composite fibers providing high photocatalytic activity for other electrospun Bi-contained nanofibers.
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高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Yajie Zhao,Binbin Ding,Xiao Xiao,Fan Jiang,Meifang Wang,Zhiyao Hou,Bengang Xing,Bo Teng,Ziyong Cheng,Ping’an Ma,Jun Lin
Nanomaterials with intrinsic peroxidase-like activities are able to catalyze the oxidation of the substrate with the peroxide, which have been widely considered as artificial enzymatic agents in cancer therapy. However, current peroxidase catalytic oxidation treatments generating reactive oxygen species rely highly on hydrogen peroxide and pH, which limit greatly their therapeutic efficiency in the tumor microenvironment. Here, we report a strategy to construct the complex virus-like Fe3O4@Bi2S3 nanocatalysts (F-BS NCs) by connecting typical peroxidase Fe3O4 (MNPs) with a narrow band gap semiconductor Bi2S3 (BS) to enhance the enzymatic activity resorting to the limited intratumoral peroxide and efficient external photothermal stimuli. In this formulation, the integrated F-BS NCs induce cancer-cell death through mild photothermal treatment and sequential photothermal-stimulative catalysis of H2O2 into highly toxic •OH under 808 nm laser, which successfully realize a remarkable synergistic anticancer achievement.
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PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
·
2020
·
IF 4.019
Xiaohui Zhao,Dongyang Wang,Shuang'an Liu,Zixiang Li,Jie Meng,Yungen Ran,Yucang Zhang,Ling Li
Dye-sensitized solar cells (DSSCs) counter electrode (CE) is needed to have both good electrical conductivity and high catalytic activity, and composite materials are better meet these two requirements. In this work, Bi 2 S 3 /carbon nanofiber (CNFs) composites are synthesized by simple electrospinning and hydrothermal methods, and after optimization of the content of Bi 2 S 3 , the large amount Bi 2 S 3 nanoparticles are grown densely on CNFs without agglomeration. Bi 2 S 3 /CNFs composites are first introduced into DSSCs as CE. The optimized Bi 2 S 3 /CNFs composites are of great electrochemical performance and obtain a photoelectric conversion efficiency (PCE) of 7.64 %, which is better than common used Pt CE (7.12 %). Thus Bi 2 S 3 /CNFs CE has great prospects based on low cost and simple fabrication process to develop Pt-free CEs which could accelerate the large-scale application of DSSCs.
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高影响因子
Small
·
2021
·Vol. 17
·期 40
·2101833
·
IF 13.281
Linjuan Wang,Siva Karuturi,Ling Zan
The construction of Z-scheme photocatalyst materials mimicking the natural photosynthesis system provides many advantages, including increased light harvesting, spatially separated reductive and oxidative active sites and strong redox ability. Here, a novel Bi 2 S 3 nanorod@In 2 S 3 nanoparticle heterojunction photocatalyst synthesized through one-pot hydrothermal method for Cr 6+ reduction is reported. A systematic investigation of the microstructural and compositional characteristics of the heterojunction catalyst confirms an intimate facet coupling between (440) crystal facet of In 2 S 3 and (060) crystal facet of Bi 2 S 3 , which provides a robust heterojunction interface for charge transfer. When tested under visible-light irradiation, the Bi 2 S 3 –In 2 S 3 heterojunction photocatalyst with 15% Bi 2 S 3 loading content achieves the highest Cr 6+ photoreduction efficiency of nearly 100% with excellent stability, which is among the best-reported performances for Cr 6+ removal. Further examination using optical, photoelectrochemical, impedance spectroscopy, and electron spin resonance spectroscopy characterizations reveal greatly improved photogenerated charge separation and transfer efficiency, and confirm Z-scheme electronic structure of the photocatalyst. The Z-scheme Bi 2 S 3 –In 2 S 3 photocatalyst demonstrated here presents promise for the removal of highly toxic Cr 6+ , and could also be of interest in photocatalytic energy conversion.
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高影响因子
BIOSENSORS & BIOELECTRONICS
·
2021
·
IF 10.618
Jia Ding,Yunlei Zhou,Qian Wang,Shiyun Ai
As an important epigenetic modification , 5-hydroxymethylcytosine (5hmC) aroused wide concern about the distribution and the function. Due to the necessity of 5hmC detection, a novel photoelectrochemical (PEC) biosensor was established based on the in-situ generated heterojunction of Bi 4 NbO 8 [email protected] 2 S 3 , which was employed as the substrate material with excellent photoelectric property . The specific recognition of 5hmC relied on the covalent reaction between –CH 2 OH of 5hmC and –SH on the substrate electrode under the catalysis of M.HhaI methyltransferase . Afterwards, ZrO 2 was used as signal amplification unit capturing by the specific reaction of Zr with the phosphate group of 5hmC. The experimental results demonstrated well specificity and sensitivity of this biosensor. Under optimal conditions, the linear relationship between the photocurrent and the logarithm value of 5hmC concentration was constructed with the range from 0.3 to 300 nM and the detection limit of 0.0779 nM (S/N = 3). The procedures of constructing this biosensor were compact and convenient, and this biosensor realized actual detection of 5hmC level in wheat sample. Significantly, this biosensor was applied to a preliminary study that the heavy metal Pb 2+ and the perfluorooctanoic acid influence the expression of 5hmC in the genomic DNA of wheat seedling roots and leaves.
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高影响因子
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