ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Shiyu Jia,Lei Zha,Xiangbo Zhao,Shouli Bai,Ke Tian,Yongjun Feng
Based on the advantages of low cost, photoelectrochemical stability and non-toxicity of BiVO 4 , we prepared BiVO 4 photoanode by the classical electrodeposition method and grew Bi 2 S 3 in situ relying on its own bismuth source to construct a type-II heterojunction. The BiVO 4 /Bi 2 S 3 /rGO ternary photoanode exhibits excellent PEC performance under the synergistic effect of rGO modification and heterojunction. The results show that the photocurrent density of the BiVO 4 /Bi 2 S 3 /rGO photoanode at 1.23 V vs RHE reaches 2.40 mA·cm -2 , which is 3.4 times higher than BiVO 4 (0.70 mA·cm -2 ), the onset potential is negatively shifted by 140 mV compared with BiVO 4 , and the highest IPCE and ABPE efficiencies reach 39.68% and 0.24%, respectively, while the charge transfer resistance R ct was reduced to 163 Ω. The enhancement is attributed to the construction of the heterojunction and its synergistic effect with rGO, which is from extending the visible light absorption of the photoanode, promoting the effective separation of carriers, and accelerating of interface charge transfer as well as providing more active sites for water oxidation.
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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.
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PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2020
·
IF 7.1
Jiajia Xi,Hao Wang,Bihong Zhang,Faqiong Zhao,Baizhao Zeng
A molecularly imprinted polymer/Bi 2 S 3 /ZnIn 2 S 4 /ITO sensor was fabricated and used for the photoelectrochemical detection of rutin. The Bi 2 S 3 /ZnIn 2 S 4 composite was synthesized by solvothermal method and it displayed good photoelectrochemical property because of the matched energy levels of Bi 2 S 3 and ZnIn 2 S 4 . In addition, ZnIn 2 S 4 could improve the stability of the composite and avoid photocorrosion. The photocurrent signal of the Bi 2 S 3 /ZnIn 2 S 4 composite was much larger than that of Bi 2 S 3 and ZnIn 2 S 4 under visible-light irradiation. Moreover, rutin imprinted chitosan was prepared by mixing rutin and chitosan solutions, followed by simple cross-linking reaction with glutaraldehyde at room temperature. The molecularly imprinted material was combined with Bi 2 S 3 /ZnIn 2 S 4 /ITO to construct photoelectrochemical sensor, and the resulting sensor showed a low detection limit (i.e. 0.003 μM) and a wide detection range (i.e. 0.01–100.0 μM) for rutin. It also displayed high stability and selectivity. The sensor could be used for the detection of rutin in real samples.
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高影响因子
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
·
2020
·
IF 0.936
Xiao-Xue SHI,Xiu-Qi LI,Xiao-Ping WEI,Jian-Ping LI
A molecularly imprinted photoelectrochemical sensor based on AgBiS 2 /Bi 2 S 3 was developed for detection of insecticide propoxur. AgBiS 2 /Bi 2 S 3 composites were synthesized on Ti substrate by solvothermal method. By using propoxur as a template molecule and o -phenylenediamine as a functional monomer, a molecularly imprinted polymer film was formed by electropolymerization on AgBiS 2 /Bi 2 S 3 composite material-modified Ti electrode for specific recognition of propoxur. The specific binding of propoxur with the imprinted cavity hindered the electron donor from passing through the cavity to the surface of the electrode, resulting in a decrease in photocurrent, and then propoxur was detected. The logarithm of the concentration of propoxur was linear with the photocurrent in the range of 1.0 × 10 −12 −5.0 × 10 −10 mol/L, and the detection limit was 2.3 × 10 −13 mol/L. The sensor was used for detection of propoxur residues in actual sample such as fruits, and the recoveries of the spiked standard were 101.0%–;103.1%.
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高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Fangwei Qi,Xiaosong Chen,Huixing Li,Gang Chen,Xinrui Luo,Shiyu Xiong,Shuping Peng,Cijun Shuai
Bismuth sulfide (Bi2S3) enabled us to transform light signals into electrical signals via the photoelectric effect, which exhibited tremendous prospects on constructing wireless electrical stimulation for accelerating nerve regeneration. However, too rapid recombination of photogenerated electron–hole pairs weakened its photocurrent. Herein, the Bi2S3/Ti3C2Tx heterojunction was synthesized by in situ growth of Bi2S3 nanoparticles on Ti3C2Tx nanosheets and then mixed with poly-l-lactic acid (PLLA) powder to fabricate the Bi2S3/Ti3C2Tx-PLLA conduit. At the heterojunction interfaces, Ti3C2Tx with a more positive Fermi energy level could form interfacial potential difference with Bi2S3 to promote electron–hole pair separation. Meanwhile, Ti3C2Tx with excellent conductivity could provide channels for photogenerated electron transmission, thus facilitating the generation of the photocurrent. Photoluminescence and electrochemical impedance spectroscopy analysis indicated that electron–hole pair separation and electron transfer were enhanced. As a consequence, under near-infrared light radiation, the output photocurrent of Bi2S3/Ti3C2Tx-PLLA was increased from 0.48 to 1.43 μA compared to that of Bi2S3-PLLA. The enhanced photocurrent effectively promoted the differentiation of rat pheochromocytoma (PC12) into functional neurons by upregulating extracellular Ca2+ influx. Therefore, the above results demonstrated that this work provided a new perspective for wireless electrical stimulated nerve regeneration.
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高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2022
·Vol. 24
·期 39
·24290-24295
·
IF 3.945
Jun Guo,Zi-Yuan Wang,Lin Chen,Yu-Ke Zhu,Ying Zhou,Quan Shan,Jing Feng,Zhen-Hua Ge
The hexagonal Bi0.33(Bi6S9)Br intermediate was incorporated to enhance the thermoelectric properties of Bi2S3 by a facile synthesis process. As a result of the increase of carrier concentration caused by Br diffusion doping and the enhancement of phonon scattering caused by pores, point defects, and secondary phase interfaces, a maximum ZT value of 0.64 was achieved at 773 K in Bi2S3 + 5% Bi0.33(Bi6S9)Br. This study provides a strategy for achieving Br doping in the Bi2S3 system by adding the Bi0.33(Bi6S9)Br intermediate alloy, while the nanostructure was maintained in the matrix, which may be also suitable for other thermoelectric materials to obtain higher performance.
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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.
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高影响因子
Chemosensors
·
2022
·Vol. 10
·期 2
·48
·
IF 4.229
Yunong Zhao,Yanbing Tao,Qing Huang,Jing Huang,Jiayu Kuang,Ruiqin Gu,Pei Zeng,Hua-Yao Li,Huageng Liang,Huan Liu
Bladder cancer is a kind of malignant tumor with high incidence in the urinary system, complex pathogenic causes, and the high recurrence rate. Biosensors capable of rapid, on site, and accurate bladder cancer diagnosis method continue to be lacking. Here, the electrochemical biosensor for detecting cytokeratin 18 (CK18, bladder cancer biomarker) was constructed based on the chemically modified electrode (CME). The work electrode (WE) was modified by bismuth sulfide semiconductor nanocrystals (Bi2S3NCs), and then immobilized with CK18 antibodies and blocking agents to complete the electrode preparation. The results indicated that the interface of a flexible carbon electrode with Bi2S3NCs film was steady with reliable charge transfer capability. With the large specific area and quantum size effect, the proposed sensor could detect CK18 antigen protein with an ultralow detection limit of 1.87 fM (fmol L−1) and wide linear dynamic range of 1–1000 pg mL−1, respectively. Detecting results could be read in less than 30 s with the portable, planar flexible CME. The sensitive and specific electrochemical biosensor possessed the characteristics of rapidity, ease-of-use, and non-invasive detection, indicating the application prospect in the early screening of bladder cancer and other diseases.Keywords:electrochemical biosensor;bismuth sulfide nanocrystals;chemically modified electrode;bladder cancer;biomarker detection;cytokeratin 18 protein
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高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2019
·Vol. 48
·期 10
·6397-6405
·
IF 1.676
Yang Mengru,Shi Yonghong,Li Yuangang,Li Huajing,Luo Ningdan,Li Jin,Fan Jing,Zhou Anning
Abstract 2D Bi 2 S 3 /CdS nanosheet arrays have been constructed by a simple three-step method. Firstly, BiOI nanosheet arrays have been electrochemically grown on the surface of conductive FTO substrate and then converted into Bi 2 S 3 nanosheet arrays by ion exchange. Finally, CdS was hydrothermally deposited onto the surface of Bi 2 S 3 nanosheet arrays to form hybrid Bi 2 S 3 /CdS nanosheet arrays. The obtained hybrid heterojunction arrays have been used as photoanodes for photoelectrochemical hydrogen evolution and showed enhanced performance and prolonged stability. The photocurrent density of the elegant Bi 2 S 3 /CdS nanosheet arrays reaches 9.48 mA/cm 2 at 1.23 V RHE under an illumination of 100 mW/cm 2 from AM 1.5G sun simulator, which is more than ten times higher than that of the pure Bi 2 S 3 nanosheet arrays and the photocurrent density does not decline obviously after 4 h of continuous operation. Ultimately, a rational mechanism is proposed to elucidate the high performance and excellent stability of Bi 2 S 3 /CdS nanosheet arrays for photoelectrochemical cells. Graphic Abstract To obtain nanosheet arrays : Arrays of Bi 2 S 3 /CdS nanosheets on a FTO substrate are synthesized by electrodeposition, ion exchange and hydrothermal process. The Bi 2 S 3 /CdS nanosheet photoanodes show better photoactive and photostability compared to bare Bi 2 S 3 (CdS) nanosheets for photoelectrochemical splitting of water.
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高影响因子
Materials Research Express
·
2019
·Vol. 6
·期 9
·095005
·
IF 1.449
Hui-Li Zhu,Qing-Yuan Cheng,Mei-Yan Liao,Zhi-Ling Zhang,Wei-Guo Cai,Jiao-Jiao Ma,Meng-Ying Sun,Ming-Xia Yu,Zhi-Quan Tian,Dai-Wen Pang
Ultra-small Bi2S3 nanoparticles are potential contrast agents for high-sensitive CT imaging. However, the expensive and harmful synthesis process limited their further application. Herein, an economical and low-toxic process was developed by employing S powders as sulfur precursors for large-scale preparation of ultra-small Bi2S3 nanoparticles. The as-prepared ultra-small Bi2S3 nanoparticles were modified with amine-terminated poly(ethylene glycol) (PEG) to produce water-soluble contrast agents. In vitro experiment results suggested that the ultra-small Bi2S3-PEG nanoparticles were low cytotoxic and superior contrast agents. In vivo experiments demonstrated that the ultra-small Bi2S3-PEG nanoparticles were preferred contrast agents for long-term and high-sensitive CT imaging.
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高影响因子
NANO
·
2018
·
IF 1.1
Kaidi Li,Fangfang Zhang,Huiming Wang,Yalan Zhou,Lixin Zhao,Jimin Du,Yating Gao,Weimin Wang,Dae Joon Kang
Here, the lamellar-shaped Bi 2 S 3 grown on a porous TiO 2 monolith was obtained by a two-step method including a sol–gel route and hydrothermal treatment. The photocatalytic activity of the as-synthesized Bi 2 S 3 /TiO 2 composites was evaluated for photodegradation of methylene blue (MB) dye in aqueous solution under the visible-light irradiation. Based on our experimental results, 5% (molar ratio of Bi 2 S 3 to TiO 2 ) Bi 2 S 3 /TiO 2 photocatalysts exhibited a maximum photodegradation rate of MB up to 96.9% under visible-light irradiation for 120 min. Our findings indicated that the lamellar-shaped Bi 2 S 3 can extend the light absorption up to visible areas, and porous TiO 2 can provide enhanced specific surface area and more mass transfer pathway to enhance the photodegradation efficiency. Furthermore, porous TiO 2 can accept the electrons from the Bi 2 S 3 conduction band due to the relatively positive electrode potential to impede the photoproduced electron and hole combination to result in advanced photocatalytic performance.
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高影响因子
Frontiers of Physics
·
2018
·Vol. 14
·期 1
·1-12
·
IF 1.892
Chen Ye,Wang Dongyang,Zhou Yuling,Pang Qiantao,Shao Jianwei,Wang Guangtao,Wang Jinfeng,Zhao Li-Dong
Recently, bismuth sulfide (Bi 2 S 3 ) has attracted much attention in the thermoelectric community owing to its abundance, low cost, and advanced properties. However, its poor electrical transport properties have prevented Bi 2 S 3 devices from realizing high thermoelectric performance. In this work, our motivation is to decrease the large electrical resistivity, which is recognized as the origin of the low ZT value in undoped Bi 2 S 3 . We combined melting and spark plasma sintering (SPS) in a continuous fabrication process to produce Bi 2 S 3- x Se x ( x = 0, 0.09, 0.15, 0.21) and Bi 2 S 2.85- y Se 0.15 Cl y ( y = 0.0015, 0.0045, 0.0075, 0.015, 0.03) samples. Our results show that Se alloying at S sites can narrow the band gap and activate intrinsic electron conduction, leading to a high power factor of ~ 2.0 μW·cm -1 ·K -2 cat room temperature in Bi 2 S 2.85 S 0.15 , about 100 times higher than that of undoped Bi 2 S 3 . Moreover, our further introduction of Cl atoms into the S sites resulted in a second-stage optimization of carrier concentration and simultaneously reduced the lattice thermal conductivity, which contributed to a high ZT value of ~ 0.6 at 723 K for Bi 2 S 2.835 Se 0.15 Cl 0.015 . Our results indicate that high thermoelectric performance could be realized in Bi 2 S 3 with earth-abundant and low-cost elements.
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高影响因子
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