JOURNAL OF SOLID STATE CHEMISTRY
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2019
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IF 2.291
Jian Zhang,Lingnan Qu,Yuhang Wu,Yuxuan Ma,Zhanli Chai,Xiaojing Wang
We have prepared a superfine powder Bi 3 TaO 7 which was attached in worm-like Bi 2 O 3 to form a Bi 2 O 3 -Bi 3 TaO 7 composite by a simple facile calcination method. The as-obtained samples were measured by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), energy dispersive X-ray spectrum (EDX), Fourier transform infrared spectroscopy (FT-IR), UV–visible diffused reflectance spectrum (DRS) and X-ray photoelectron spectra (XPS). The optimal Bi 2 O 3 -Bi 3 TaO 7 (2.0Bi 2 O 3 :1.0Bi 3 TaO 7 ) sample show the highest photocatalytic efficiency for tetracycline (TC) degradation (90.06%) irradiated with visible light, compared with that of a bare Bi 3 TaO 7 catalyst. Meanwhile, radical capturing experiments indicate that the photo-induced holes (h + ) and hydroxyl radial (•OH) are the main active species. Through the measurement of photocurrent density and electrochemical impedance spectrum, it indicates that the photogenerated carriers are significantly separated due to the formation of heterojunctions . Consequently, the Bi 2 O 3 -Bi 3 TaO 7 photocatalyst may have potential applications in environmental purification.
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
CERAMICS INTERNATIONAL
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2018
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IF 3.057
Junhui Yi,Changquan Jiao,Huimei Mo,Qiujuan Chen,Qining She,Zhilin Li
Flower-like Bi 2 O 3 /Bi 2 MoO 6 heterostructured microspheres with excellent photocatalytic performance were successfully constructed by in situ ion exchange and calcination , employing Bi 2 MoO 6 microspheres prepared by solvothermal method as raw material and template. Various characterization techniques including XRD , FE-SEM, EDS , UV–vis DRS and XPS have been adopted to analyze the composition, structure and optical absorption property of the obtained sample. Their photocatalytic properties for degrading acid orange 7 (AO7) were investigated with visible light. Experimental results show that all Bi 2 O 3 /Bi 2 MoO 6 composites have a higher catalytic activities than pure Bi 2 MoO 6 . Remarkably, 0.2Bi 2 O 3 /Bi 2 MoO 6 show best activity and the degradation efficiency is up to 99% under visible light for 100 min, which is ascribed to the synergistic effect and big heterojunction interface, and promoting rapid transmission of photogenerated charge. Moreover, There is negligible reduction on the degradation efficiency after catalysts was reused for 4 times. The photogenerated holes (h + ) and superoxide radical anions (•O 2 - ) were major active species by radical scavenger experiments. A possible mechanism is proposed to explain rationally enhancement of photocatalytic activity.
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
JOURNAL OF MOLECULAR STRUCTURE
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2024
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IF 4
Yuxuan Ke,Shuzhen Chen,Suisui Su,Jiao Zhang,Shenghua Hu,Cuiqing Zhang,Changyuan Hu,Shizheng Zheng
Bi 2 O 3 has been recognized as a promising anode of aqueous secondary battery because of the high capacity, but the application is greatly hindered by the poor conductivity and limited actual capacity. Herein, for the first time, one dimensional (1D) α-Bi 2 O 3 nanobelt is fabricated via alkali etching strategy using rod-shaped Bi-MOF (CAU-17) as the self-sacrificial template. Specifically, high-crystalline and oxygen-deficient α-Bi 2 O 3 nanobelt with length and width of 6 μm and 300 nm are identified. The electrochemical results demonstrate the high specific capacity (247 mAh g −1 @1 A g −1 ) and acceptable stability of α-Bi 2 O 3 nanobelt. Such superior capacity is derived from the exposed electrochemical active sites, fast charge transfer and efficient ion diffusion in 1D high-crystalline and oxygen-vacancies enriched structure. The assembled Ni-Bi battery displays high capacity (78.3 mAh g −1 ) and high energy density of 100.2 Wh kg −1 (at power density of 2829.8 W kg −1 ). Our work provides rational guidance for architecting 1D high-capacitive electrodes for aqueous rechargeable alkaline battery.
研究领域:
材料科学
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电化学
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DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 15
·3779
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IF 3.1
Jiaji Zhang,Zhihua Xiong,Zi Wang,Jinlong Sun
Bismuth-based compounds have been regarded as a kind of promising material due to their narrow bandgap, high carrier mobility, low toxicity, and strong oxidation ability, showing potential applications in the field of photoelectrochemical (PEC) activities. They can be applied in sustainable energy production, seawater desalination and treatment, optical detection and communication, and other fields. As a member of the broader family of bismuth-based materials, β-Bi2O3exhibits significant advantages for applications in engineering, including high photoelectric response, stability in harsh environments, and excellent corrosion resistance. This paper presents the synthesis of β-Bi2O3thin films utilizing the mist chemical vapor deposition (CVD) method at the optimal temperature of 400 °C. Based on the β-Bi2O3thin film synthesized at optimal temperature, a PEC-type photodetector was constructed with the highest responsivity R of 2.84 mA/W and detectivity D of 6.01 × 1010Jones, respectively. The photodetection performance was investigated from various points like illumination light wavelength, power density, and long-term stability. This study would broaden the horizontal and practical applications of β-Bi2O3.
研究领域:
材料科学
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光电材料
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能源与环境科学
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DOI
PubMed
高影响因子
Journal of Magnesium and Alloys
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2023
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IF 17.6
Qiang Tang,Yingze Song,Xuan Cao,Cheng Yang,Dong Wang,Tingting Qin,Wei Zhang
Rechargeable magnesium-ion (Mg-ion) batteries have attracted wide attention for energy storage. However, magnesium anode is still limited by the irreversible Mg plating/stripping procedure. Herein, a well-designed binary Bi 2 O 3 -Bi 2 S 3 (BO-BS) heterostructure is fulfilled by virtue of the cooperative interface and energy band engineering targeted fast Mg-ion storage. The built-in electronic field resulting from the asymmetrical electron distribution at the interface of electron-rich S center at Bi 2 S 3 side and electron-poor O center at Bi 2 O 3 side effectively accelerates the electrochemical reaction kinetics in the Mg-ion battery system. Moreover, the as-designed heterogenous interface also benefits to maintaining the electrode integrity. With these advantages, the BO-BS electrode displays a remarkable capacity of 150.36 mAh g −1 at 0.67 A g –1 and a superior cycling stability. This investigation would offer novel insights into the rational design of functional heterogenous electrode materials targeted the fast reaction kinetics for energy storage systems.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
NANOTECHNOLOGY
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2022
·Vol. 34
·期 1
·015711
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IF 3.953
Maira Liaqat,Khalid Nadeem Riaz,Tahir Iqbal,Ghulam Nabi,Muhammad Rizwan,M Shakil
Heterostructure BiVO4/Bi2O3 nanocomposites with enhanced visible light activity are effectively synthesized through an easiest and single step hydrothermal route, using bismuth subnitrate and ammonium meta-vanadate as main raw materials in existence of citric acid. The phase and surface structure, topography and optical properties of synthesized composites are characterized by XRD, SEM, EDX, FTIR, UV–Visible and PL spectroscopy. It was found that 5%BiVO4/Bi2O3 (BOBV-5) nanocomposite exhibit excellent photocatalytic performance for rhodamine B dye degradation and tetracyclic under irradiation of visible light as compared to single component i.e. BiVO4. The increased photocatalytic activity should be ascribed for making p–n heterojunction among p-type Bi2O3 and n-type BiVO4. This p–n heterojunction successfully reduce the recombination of photogenerated charge carriers. Furthermore, the BOBV-5 novel photocatalyst shows good stability in constructive five cycles and photocatalytic activity is best for conquering photo corrosion of a photocatalysts. To explain charge migration route, whole photocatalytic mechanism was described in terms of energy band structures. Furthermore, the present work is helpful effort for design of new visible light photocatalytic materials with heterojunction structures.
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
Journal of Water Process Engineering
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2020
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IF 3.465
Nan Wang,Xing Li,Yanling Yang,Zhiwei Zhou,Yi Shang,Xiaoxuan Zhuang
The photocatalytic degradation of sulfamethoxazole (SMX), sulfadiazine (SDZ) and sulfamethazine (SMT) by Bi 2 O 3 -TiO 2 /PAC under solar light irradiation was studied. The results exhibited that Bi 2 O 3 -TiO 2 /PAC composite prepared by two-stage calcination method contained of rutile and anatase mixed crystal phases, and it had visible light response capability. In addition, Bi 2 O 3 -TiO 2 /PAC had a certain adsorption capacity for SMX, SDZ and SMT, and its saturated adsorption mass was 30.88, 11.28 and 26.24 mg/g, respectively. Compared to photolysis and adsorption process, the photocatalytic degradation efficiencies of the three sulfonamides were significantly improved, and more than 99 % of photocatalytic degradation efficiency was achieved. The EPR measurements showed that both hydroxyl radicals (·OH) and superoxide radicals (·O 2 − ) were produced in the photocatalytic process. However, trapping experiments confirmed that photo-generated hole (h + ) played a lead role in the photocatalytic degradation of SMX. Contrarily, the ·O 2 - was the main oxidative species for SDZ and SMT degradation. Furthermore, the effects of initial pH of solution, sodium bicarbonate, humic acid and natural water (lake and river water) on the photocatalytic degradation were investigated. The photocatalytic degradation pathways of Bi 2 O 3 -TiO 2 /PAC for sulfonamides were discussed. There were differences degradation pathways of the SDZ, SMT and SMX by Bi 2 O 3 -TiO 2 /PAC mainly reflected in: Hydroxylation of benzene ring, extrusion of SO 2 . While, similar pathways existed in the process of sulfanilamide degradation, such as the breaking of S N bond and the cracking of N-containing benzene ring.
研究领域:
环境科学
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化学工程
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材料科学
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DOI
高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
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2025
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IF 3.2
Mao Xiqiang,Zou Sujing,Lu Xue,Li Shaoyi,Wu Lei,Li Jun,Yang Jian,Fan Ximei
Photocatalysis technology has garnered significant attentions for addressing water pollution issues, however, conventional photocatalysts face great challenges such as poor recoverability, low light utilization rates, and severe caking that hinder their widespread use. This study presents the development of floating Bi 2 O 3 /TiO 2 /HGM (BTH) photocatalysts utilizing hollow glass microspheres (HGM) as a supporting material. The optimized heterojunction of BTH-0.3 achieves an 83.9% removal rate of tetracycline hydrochloride within 60 min irradiation under simulated sunlight, surpassing the 77.3% achieved by TH-2 loaded with only TiO 2 and the 62% achieved by pure Bi 2 O 3 . Furthermore, BTH-0.3 exhibits outstanding photocatalytic performance across varying solution pH levels and diverse water matrices. Moreover, consistent tetracycline hydrochloride removal rates were observed over four consecutive degradation cycles, demonstrating its excellent reusability. This research offers a promising approach with practical potential for addressing water pollution challenges via photocatalytic technology.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Zixun Fang,Yao Zhou,Yang Yang,Yidong Hou,Can Yang,Jinshui Zhang
Artificial Z-scheme photocatalytic systems, inspired by natural photosynthesis, have been widely employed for pollutant removal. In this study, we fabricated a ternary Z-scheme Bi 2 O 3 /Bi/porous carbon nitride (PCN) heterojunction with an intimately coupled interface through a simple EG-assisted solvothermal approach to improving photocatalytic performance of NO oxidation. The in-situ generated metallic Bi acts as an electron mediator, effectively accelerating the separation and transfer of photoexcited carriers. The unique Z-scheme charge transfer mechanism provides the strong redox abilities and isolates the active sites for specific reactions, thus promoting photocatalytic NO oxidation activity. As a result, the optimized Bi 2 O 3 /Bi/PCN sample achieved a NO removal efficiency of 94.6%, outperforming single-component catalysts and most previously reported heterojunction-based photocatalysts. Additionally, in-situ Fourier transform infrared spectroscopy was employed to propose the NO removal mechanism, offering valuable insight into the conversion pathway. Such a heterogeneous Z-scheme photocatalytic system with a strong redox ability, high charge-separation efficiency, and long-term stability, demonstrates significantly enhanced photoactivity for pollutant removal and is expected to attract increasing interest for other photocatalytic applications.
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
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2018
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IF 11.698
Longbo Jiang,Xingzhong Yuan,Guangming Zeng,Jie Liang,Xiaohong Chen,Hanbo Yu,Hou Wang,Zhibin Wu,Jin Zhang,Ting Xiong
Artificial Z-scheme photocatalyst can not only reduce the recombination of photogeneraged electron–holepairs, but also retain prominent redox ability. In this study, direct solid-state dual Z-scheme WO 3 /g-C 3 N 4 /Bi 2 O 3 photocatalyst was successfully synthesized by one step co-calcination stratage using tungstic acid, melamine and bismuth (III) nitrate pentahydrate as the precursors. Surface, morphological, and structural properties of the resulting materials were comprehensive characterized by XRD, XPS, SEM, TEM, UV–vis diffuse reflection spectroscopy, BET surface areas, photoluminescence and ESR analysis. The WO 3 /g-C 3 N 4 /Bi 2 O 3 composite exhibited superior photocatalytic activities for tetracycline degradation than that of pure g-C 3 N 4 , WO 3 , Bi 2 O 3 and their binary composites under visible light irradiation. The enhanced photocatalytic performance of WO 3 /g-C 3 N 4 /Bi 2 O 3 composite can be ascribed to improved visible light absorption, increased surface area and enhanced separation efficiency of photo-generated electron-hole pairs. In addition, the photocatalyst exhibits high stability and reusability. On the basis of the results, a novel direct solid-state dual Z-scheme photocatalytic mechanism was also proposed.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Guorui Liu,Guorui Ma,Haiqiang Mu,Jing Li,Feng Li,Min Zhu,Jin Zhang
Significant carrier recombination has severely limited the development of the most potential photoelectrocatalytic CO 2 reduction reaction (PEC-CO 2 RR). Herein, coral-like CuBi 2 O 4 -Bi 2 O 3 photocathodes are prepared using the strategy of the construction of heterojunction to improve the efficiency of carrier separation. As expected, its faradic efficiency of CO (FE CO ) at the lower potential (0.1 V vs. RHE) is 86.03 %, which is about 1.49 times higher than that of the original CuBi 2 O 4 film. The increased catalytic activity of CuBi 2 O 4 -Bi 2 O 3 can be attributed to the high surface area of the distinctive coral-like structure of Bi 2 O 3 , which enhances light absorption efficiency. Additionally, the higher degree of band bending in CuBi 2 O 4 -Bi 2 O 3 and the built-in electric field can speed up the transport rate of electrons, slow down the recombination of photogenerated electrons with holes and extend the lifetime of photogenerated electrons, allowing electrons to continuously participate in the reaction. This study proposes a novel strategy to optimize the efficiency of photoelectrocatalytic CO 2 reduction by CuBi 2 O 4 -based photocathodes.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Xiaoqing Wang,Jing Zhang,Rui Wang,Yujie Ren,Shiyao Jin,Shimin Wang,Hongjing Lu,Yongjiang Wang,Junzi Zhao,Chunhua Xiong
We present a strategy for the modification of an ion-exchange resin (D113) as an inexpensive carbon source to obtain a macrospherical photocatalyst precursor that can be transformed into a stable all-solid-state Z-scheme heterojunction catalyst (denoted Bi 2 O 3 -Co 3 O 4 @C). X-ray diffractometry and Fourier transform infrared and Raman spectroscopy measurements confirmed the presence of highly graphitized carbon in the complex. Significantly, the cost of the as-prepared material was only 1/200 of that of commercial carbon nanotubes and 1/80 of that of graphene oxide . Aided by the organic carbon source, Bi 2 O 3 -Co 3 O 4 @C showed an enhanced light absorption, hindered electron–hole recombination, and an enhanced photocurrent response. Under simulated solar irradiation, Bi 2 O 3 -Co 3 O 4 @C (20 mg/L) showed degradation efficiencies of 100%, 47.52%, 94.28%, and 100% for methylene blue, rhodamine B, tetracycline, and Cr(VI), respectively, after 120 min. Herein, the highest turnover frequency (TOF) obtained under irradiation was 2.5 h −1 for Cr(VI). Further, the degradation efficiency for methylene blue trihydrate remained 91.46% after five cycles, indicating significantly higher stability than that of a catalyst prepared without graphitic carbon. The optimized band structure and photocatalytic mechanism of Bi 2 O 3 -Co 3 O 4 @C were determined based on ultraviolet-visible measurements and plane-wave density functional theory calculations in VASP. The findings of this study indicate the promise of the Bi 2 O 3 -Co 3 O 4 @C macrospheres for industrial applications based on their photocatalytic performance, high stability, low cost, and suitable particle size.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
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