JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2021
·
IF 8.067
Jun Guo,Yu-Ke Zhu,Lin Chen,Zi-Yuan Wang,Zhen-Hua Ge,Jing Feng
Bi 2 S 3 -based alloys are considered promising thermoelectric materials due to their large Seebeck coefficient and low lattice thermal conductivity . However, low electrical conductivity usually leads to poor electrical transport properties, which seriously restricts their further application in thermoelectric refrigeration and/or power generation. In this work, Bi 2 S 3 with high electrical transport properties is synthesized hydrothermally via Se and Cl co-doping. The maximum electrical conductivity value of 483 S cm −1 was obtained for the Bi 2 S 2.4 Se 0.4 Cl 0.20 sample at room temperature. The significant improvement of electrical conductivity gives rise to a high average power factor of 411 μW m −1 K −2 during the measuring temperature range and a peak value of 456 μW m −1 K −2 at 673 K. Benefiting from the largely improved electrical transport properties, a superior ZT value of approximately 0.66 and ZT ave . of 0.36 were obtained for Bi 2 S 2.4 Se 0.4 Cl 0.20 , and the theoretically calculated conversion efficiency reached 5.7%. The results indicate that Bi 2 S 3 is a promising candidate for thermoelectric applications at medium temperatures.
研究领域:
材料科学
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热电学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Bing Xing,Ting Wang,Xiaobo Han,Kun Zhang,Benxia Li
The rational integration of semiconductor quantum dots (QDs) with anatase TiO 2 nanostructures is a promising strategy to develop efficient photocatalysts. Herein, Bi 2 S 3 QD/TiO 2 photocatalyst was constructed by controllably depositing Bi 2 S 3 QDs on flower-like TiO 2 nanostructures and used for the photocatalytic redox-coupling reaction of H 2 evolution and oxidative transformation of benzyl alcohol. The abundant amino groups in TiO 2 nanostructures served as the anchoring sites for uniform growth of Bi 2 S 3 QDs. The anchoring of Bi 2 S 3 QDs onto TiO 2 nanostructures not only enhanced the photoabsorption ability and the photogenerated charge separation efficiency but also afforded powerful photogenerated charge carriers and abundant active sites for the photocatalytic reaction. As a result, the Bi 2 S 3 QD/TiO 2 photocatalyst exhibited a favorable performance in the redox-coupling reaction, providing the high production rates of H 2 up to 4.75 mmol·g cat −1 ·h −1 and benzaldehyde up to 6.12 mmol·g cat −1 ·h −1 , respectively, as well as an excellent stability in the long-term photocatalytic reaction. Meanwhile, a trace amount of water in the reaction system could act as a promoter to accelerate the photocatalytic redox-coupling reaction. The photocatalytic mechanism following S-scheme heterojunction was proposed according to the systematic characterizations and experimental results. This work offers some insight into the rational construction of efficient and cost-effective photocatalysts for the conversion of solar to chemical energy.
研究领域:
材料科学
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化学工程
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环境科学
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DOI
PubMed
高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 39
·e202404063
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IF 1.9
Xiangmei Ma,Shengmin Pan,Yiqing Wu,Bin Wang
Graphical A novel composite (BCE) by depositing ethyl 3,4-dihydroxybenzoate on the surface of Bi2S3-doped CeO2 was synthesized, and the prepared BCE/polyvinyl chloride (PVC) composite films displaied excellent UV-shielding property, butbarely catalytic thermal decomposition of the PVC matrix. In this study, bismuth sulfide (Bi 2 S 3 )-doped cerium oxide (CeO 2 ) was prepared via hydrothermal method, and by depositing ethyl 3,4-dihydroxybenzoate (EDHB) on the surface of Bi 2 S 3 /CeO 2 (Bi 2 S 3 /CeO 2 /EDHB and BCE). The samples were characterized by FTIR, XRD, TEM, and UV–vis absorption spectrum means. According to the characterizations, Bi 2 S 3 was successfully incorporated into the CeO 2 structure (Bi 2 S 3 /CeO 2 ), and the prepared BCE/PVC composite films display excellent UV-shielding property. Moreover, the result of thermogravimetric analysis (TGA) tests indicated that BCE also was barely catalytic thermal decomposition of PVC matrix. This work not only paves an attractive way for the design of the CeO 2 -based UV-shielding agent, but also provides valuable insights into the inspiration to construct high-performance UV-shielding composites.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
CRYSTENGCOMM
·
2016
·Vol. 19
·期 4
·727-733
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IF 3.849
Huan Yu,Junli Wang,Tingting Wang,Hongsong Yu,Juan Yang,Guiwu Liu,Guanjun Qiao,Qing Yang,Xiaonong Cheng
A facile colloidal chemistry method is reported for synthesis of uniform Bi2S3 nanorods in a mixed solution of oleylamine with other organic amines including n-dodecylamine (C12), n-octylamine (C8), and n-hexylamine (C6). The nanorod length can be tuned through the carbon-chain length of these amines and importantly multigrams of Bi2S3 nanorods can be readily synthesized in a single scaled-up batch. Current–voltage (I–V) measurements showed that the Bi2S3 nanorods, obtained from both the small and large-scale batches or ones with different chain-length amines, exhibit fast light response characteristics (at the sub-second scale) with an obviously enhanced photocurrent (or photoconductivity) under broad-spectrum white light or monochromatic visible light of different wavelengths. The as-obtained nanorods, as determined by time-dependent current (I–t) curves, also exhibit excellent photoresponsive stability and reproducibility with the on–off switch of light. The photoconductivity enhancement in the Bi2S3 nanorods is assigned to the efficient electron–hole pair separation due to a hole-trapping mechanism. These results indicate the promising potential of Bi2S3 nanorods for optoelectronic device applications including photodetection (sensing), optical switch, photocatalysis, and photovoltaics within the visible spectrum range.
研究领域:
材料科学
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纳米技术
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光电子学
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产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
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2019
·Vol. 48
·期 10
·6397-6405
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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.
研究领域:
材料科学
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纳米技术
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光电化学
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产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2025
·Vol. 155
·期 5
·1-19
·
IF 2.4
Hu Xinyin,Xiao Guoqing,Chen Chunlin,Chen Chunyan,Zeng Xiang,Li Ruili,Yang Zhengwei
Recently, several emerging pollutants have caused increasing damage to aquatic ecosystems. Reducing antibiotic concentrations in water by visible light is one of the most promising strategies for sustainable development. Here, a Bi 2 S 3 /CeO 2 /Ni(OH) 2 Z-scheme heterojunction photocatalyst was prepared by the hydrothermal method, which could effectively utilize free radicals to degrade tetracycline. Ni(OH) 2 was used for co-catalysing in photodegradation experiments to improve electron transfer and enhance photocatalytic performance. The degradation rate of the Z-scheme heterojunction photocatalyst for 20 mg/L TC was 91.35% after reacting 60 min under visible light irradiation. Besides, it also investigated such operational parameters influencing the photocatalytic reaction as catalyst dosage, initial concentration of tetracycline hydrochloride (TC), and solution pH. Studies using free radical scavenging experiments and electron spin resonance (ESR) measurements demonstrated that hydroxyl radicals (·OH) and superoxide radicals (·O 2 − ) both contributed to the photodegradation of TC. Finally, with high-performance liquid chromatography-mass spectrometry (LC-MS), potential degradation pathways of the intermediate products were logically inferred as well as the photocatalytic mechanism. The experimental results surface that the prepared Z-scheme heterojunction photocatalyst Bi 2 S 3 /CeO 2 /Ni(OH) 2 exhibits superior photocatalytic performance, offering a novel approach to addressing TC contamination in environmental settings. Graphical
研究领域:
环境科学
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材料科学
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光催化技术
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产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Yao Zhang,Wenkai Gao,Shaowei Ji,Danyang Zhao,Xinyu Bai,Huaiguo Xue,Nengqin Jia
An ingeniously conceived molecularly imprinted photo-induced sensor with polymethacrylic acid (PMAA) embedded into the urchin-shaped Bi 2 S 3 architecture was devised, which was dedicated to sensitive exploring the sulfadiazine (SDZ). One critical procedure is the identification of PMAA and SDZ molecules by hydrogen bonding , and creates copious particular recognition sites upon the elution of SDZ molecules. It is worth mentioning that urchin-shaped Bi 2 S 3 of cuboid nanorods compact stacked can provide a large specific surface area and enable more SDZ molecularly imprinted polymers to be attached or embedded in it. Accordingly, when encountering SDZ molecules again, a sensitive augment of photocurrent signal is captured, which reveals outstanding linear relationship in the concentration domain 0.003–1.8 mg L −1 and the detection limit is calculated to be 9.06 × 10 −8 g L −1 (S/N = 3). Moreover, it is gratifying that as-prepared photo-induced sensor exhibits marked selectivity for the analysis of SDZ when exposed certain interfering species with similar configurations. Considerable reproducibility and stability in conjunction with tap water and aquatic water as actual samples of the fabricated photo-induced sensor are further evaluated, corroborating the prominent photoelectrochemical performances. The integrated photo-induced with molecularly imprinted approach will be utilized to probe into these vast unexplored environmental contaminants in this specific, effective and rapid detection manner.
研究领域:
分析化学
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环境科学
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生物医学工程
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2019
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IF 7.65
Yan Sang,Xi Cao,Guangdong Dai,Lvxuan Wang,Yin Peng,Baoyou Geng
The construction of heterojunction system can promote the separation and transfer of photogenerated electron-hole pairs, which is conducive to the degradation of sewage. In this paper, heterostructured Bi 2 O 3 /Bi 2 S 3 nanoflowers are fabricated by a one-step hydrothermal method. The microstructure and optical absorption properties are studied through the detailed characterization of this heterojunction. The visible light photocatalytic ability of as-prepared Bi 2 O 3 /Bi 2 S 3 heterojunctions are investigated by photocatalytic removals of RhB and Cr(VI). The results of photocatalysis indicate that removal efficiencies of RhB and Cr(VI) over Bi 2 O 3 /Bi 2 S 3 heterojunction are higher than those of pure Bi 2 O 3 and Bi 2 S 3 . The improved photocatalytic performance of the Bi 2 O 3 /Bi 2 S 3 heterojunctions could be attributed to a combination of the p-n junction between the p-type Bi 2 S 3 and n-type Bi 2 O 3 , and large specific surface areas (46.31 m 2 g −1 ). Moreover, the probable photocatalytic mechanism of composite photocatalysts is explored in detail by active species trapping experiments, N 2 adsorption–desorption, the transient photovoltage electrochemical impedance spectroscopy and photoluminescence measurements. This work provides new insights into building of the efficient and novel heterogeneous photocatalysts and other energy-related devices.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2020
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IF 16.683
Ke Wang,Zipeng Xing,Du Meng,Shiyu Zhang,Zhenzi Li,Kai Pan,Wei Zhou
Inadequate separation of carriers is still major obstacles to the practical application of photocatalysis. The reasonable design of semiconductor photocatalysts is expected to break through this bottleneck. Herein, MoSe 2 @Bi 2 S 3 /CdS is designed by solvothermal-hydrothermal strategy. Thanks to the dual Z-Scheme heterojunction conforms to the characteristics of multi-channel charge transfer which favor the spatial separation of carriers. MoSe 2 @Bi 2 S 3 /CdS hollow structure increases the utilization rate of light source, the core-shell structure increases the interface area and the active sites. Moreover, full spectrum absorption endues MoSe 2 @Bi 2 S 3 /CdS with unpredictable photothermal effect, which can touch off near-field temperature rise to facilitate photocatalytic process. Profiting from the synergistic facilitation effect, MoSe 2 @Bi 2 S 3 /CdS exhibits excellent photocatalytic activity in the hydrogen evolution and pollutants removal of Cr (VI) and 2,4,6-trichlorophenol (TCP), which are up to 11.84 mmol/g/h, 98.7% and 99.2%, respectively. This dual functional MoSe 2 @Bi 2 S 3 /CdS photocatalyst may paves new opportunities for solving the energy crisis and environmental pollution.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
高影响因子
ACS Applied Bio Materials
·
2019
·
IF 0
Yao Huang,Junqing Huang,Mingyang Jiang,Songjun Zeng
Gaseous therapy based on nitric oxide (NO) has emerged as a potential tumor therapy route. However, the development of a NO generator with precisely controlled NO releasing in the target site is still facing enormous challenges. Herein, a typical NO delivery platform by integrating the hollow structured polydopamine (PDA) coated Bi2S3 nanohybrids (denoted as H-Bi2S3@PDA) with a heat-sensitive S-nitrosothiol (RSNO) molecule was explored for near-infrared (NIR) light-responsive on-demand NO-releasing and synergetic gas/photothermal combination therapy of tumors. The designed H-Bi2S3@PDA nanocomposites hold high photothermal conversion efficiency of 46.13% under irradiation of a NIR laser, leading to NIR light-triggered controllable generation of NO gas via breaking the S–NO bonds of the heat-sensitive RSNO molecules. More importantly, synergistic gas/photothermal therapy of the tumor was also achieved, which presented remarkable inhibition growth and ablation of tumors. These findings provide the opportunity to design a NIR light-activated NO generator with a combination of photothermal materials and heat-sensitive molecules for integrative gas/photothermal therapy in deep tumors.
研究领域:
生物医学工程
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肿瘤学
·
纳米医学
✓ 已验证
产品关联
DOI
PubMed
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Linghui Ding,Chuanhui Geng,Yan Hao,Kecun Ma,Mei Liu,Pengfei He,Zhi Chen,Qingguo Chen
A new lotus-like Bi 2 WO 6 /Bi 2 S 3 /g-C 3 N 4 composite was synthesized through hydrothermal reaction and physical doping techniques. And the degradation of norfloxacin (NFX) using Bi 2 WO 6 /Bi 2 S 3 /g-C 3 N 4 (BiSW-GCN) photocatalytic material was investigated. Scanning electron microscopy (SEM) revealed that spherical Bi 2 S 3 and flake-like g-C 3 N 4 were closely adhered to the petals of Bi 2 WO 6 , with a uniform distribution of various elements observed in the Raman spectra. These spectra also indicated a reduction in fluorescence intensity and the recombination rate of photogenerated electron-hole pairs. Through analysis of the degradation efficiency of NFX with varying ratios of the photocatalytic materials, it was determined that the optimal photocatalytic performance was achieved when Bi 2 S 3 constituted 3 % of the Bi 2 WO 6 content, and the Bi 2 WO 6 /Bi 2 S 3 to g-C 3 N 4 ratio was set at 20:1. The influence of pH value, photocatalyst concentration, and NFX concentration on the degradation rate within the reaction environment was examined. Results showed that the material exhibited its highest efficiency in a neutral environment. With the addition of 1 g/L BiSW-GCN, the degradation rate of an 8 mg/L NFX solution reached 92.4 % within 120 min, and the total organic carbon (TOC) removal rate achieved 41.1 %. The kinetic constant for BiSW-GCN was calculated to be 0.0206 min −1 . A trapping experiment demonstrated that the primary toxicity of the photocatalytic process was due to hole action, followed by photoelectron generation. Based on the inhibitory effect of NFX on E. coli , the toxicity of the degraded NFX solution was found to be absent when analyzed using the product intermediate toxicity assessment method, thus confirming the potential for the by-product to be non-toxic.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Small
·
2024
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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
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光伏技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）