PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
·
2018
·Vol. 215
·期 11
·1701061
·
IF 1.795
Binrong Li,Jinyu Chu,Yi Li,Minjia Meng,Yanhua Cui,Qidi Li,Yonghai Feng
Photocatalytic degradation is an effective method for fast removal of dye-contaminated water. In the present work, a bismuth oxide/zinc sulfide-cellulose acetate photocatalytic membrane (Bi 2 O 3 /ZnS-CA) is successfully fabricated via the phase-inversion method with a Bi 2 O 3 /ZnS heterojunction as the photocatalyst. The Bi 2 O 3 /ZnS-CA membranes shows high photocatalytic activity in degradation of Rhodamine B (RhB) under visible-light irradiation due to the Bi 2 O 3 /ZnS heterojunction structure contributing to the high efficiency of photogenerated charge separation. The photodegradation efficiency of Bi 2 O 3 /ZnS-CA membrane is significantly enhanced (about 30% improvement) and the photodegradation kinetic is four times faster than that of the Bi 2 O 3 -CA and the ZnS-CA membranes. Moreover, the Bi 2 O 3 /ZnS-CA membrane exhibits excellent permeation flux (649.7 L m −2 h −1 ) and high porosity (69.94%). The Bi 2 O 3 /ZnS-CA membrane also shows good adsorption performance of RhB, which could enhance the interaction between RhB and the catalyst. This work provides a new sight to construct highly effective visible-light-driven photocatalytic membranes for continuous organic dye treatment.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Yan Sang,Jingwei Xue,Junjie Hu,Peng Zhang,Fugang Zhao,Yanping He
High-low heterojunctions derived from metal-organic frameworks (MOFs) have promising applications in photocatalytic wastewater treatment because of their high photo-redox ability and boosted charge separation efficiency. Herein, Bi-MOF derived porous hierarchical Bi 2 O 3 /Bi 2 S 3 nanoflower-like heterojunctions were prepared by the calcination-hydrothermal method. The optimized Bi 2 O 3 /Bi 2 S 3 -2 composite showed a higher degradation rate of Cr (VI) (99.79 % in 30 min) than the pure substance. Moreover, comprehensive studies were conducted on the kinetics, stability and recycling of Bi 2 O 3 /Bi 2 S 3 , as well as optical characteristics . The active species trapping experiments confirmed that e - plays a dominant role in the elimination of Cr (VI). These findings provided novel strategies for construction of porous hierarchical heterojunctions with advanced visible-light-induced degradation performance. The enhanced photo-degradation efficiency of the optimal nanocomposite was assigned to the higher visible-light absorbance, separation of photogenerated carriers, reduced recombination of photo-induced carriers, and enhanced redox capability owing to the construction of porous hierarchical heterojunctions amongst the components.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Xiang Yu,Yuwei Mi,Zihan Gong,Yongfang Zhang,Lei Wang,Suyuan Zeng
Constructing heterojunctions is an effective strategy for increasing semiconductor photocatalytic activity. Herein, a Bi2O3/Bi4O5Br2 type-II heterojunction was synthesized using a simple one-pot solvothermal route. The 0-dimensional (0D) Bi2O3 nanoparticles are uniformly distributed within the 2D Bi4O5Br2 nanosheets with (101̅) facets dominantly exposed. In comparison with pure Bi2O3 and Bi4O5Br2, they show higher photocatalytic activity degradation of resorcinol (RO) and Rhodamine B (RhB). The Bi2O3/Bi4O5Br2 composite containing 10% Bi2O3 (BOB4) displays the best photocatalytic activity. For instance, compared with pure Bi4O5Br2 and Bi2O3, the k(RO) values of BOB4 (0.58 h–1) are 3.1 and 4.8 times higher. The enhanced photocatalytic activity is attributed to the formation of a large heterojunction interface that results from the homogeneous distribution of Bi2O3 nanoparticles in the Bi4O5Br2 nanosheet, which effectively enhances the photogenerated charge separation in a type-II mode. Major active species include superoxide radicals (•O2–), hydroxyl radicals (•OH), and holes (h+). In addition, the Bi2O3/Bi4O5Br2 photocatalysts exhibit outstanding resistance to inorganic ions, pH, water matrix, as well as outdoor sunlight and favorable stability and biocompatibility. This work presents a simple method to construct Bi-based heterojunction architectures for photoactivity improvement.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jiale Wu,Xinyu Zhao,Jin Hu,Zhongshan Deng,Yongjin Feng,Hongtao Fan,Junkai Li,Qingming Chen,Kaijun Wang,Kaizhao Wang
Considering the growing hazards of ionizing radiation, developing new shielding glass systems is essential to increase radiation safety and diversity of material choices in the real-time monitoring field. Based on the excellent comprehensive performance exhibited by high-entropy oxide glasses (HEOGs) due to its unique component composition and high-entropy effect, B 2 O 3 -TeO 2 -BaO-Bi 2 O 3 -MO (W, Ta, Dy, Mo) HEOGs with heavy metal oxides as the fifth component were prepared via the melt-quenching process. Physical, structural, and optical properties analysis show that the tantalum pentoxide (Ta 2 O 5 )-optimized HEOG has higher densification, more continuous and compact network filling, and wider indirect optical bandgap (Eg) than other glasses. The radiation attenuation ability of HEOGs was evaluated utilizing the MCNPX simulation and Phy-X program. The minimum specific lead equivalent (PbE) value of all heavy metal HEOGs in the entire photon energy range (10 −3 –10 3 MeV) is much higher than all types of commercial lead glass in service, showing excellent comprehensive attenuation ability for X-rays, γ-rays, and fast neutrons. In addition, the addition of Ta 2 O 5 dramatically shortens the path and attenuation times required for incident photons to annihilate inside the material due to the density increase effect brought by the high atomic number and high density. In the 100 MeV nuclear radiation area and the 0.08 MeV medical X-ray application zone, only 10 cm and 0.3 cm thickness are needed to achieve saturated absorption of photons.
✓ 已验证
产品关联
DOI
高影响因子
ChemEngineering
·
2025
·Vol. 9
·期 4
·66
·
IF 3.4
Shang Peng,Zhao Liu,Pairuzha Xiaokaiti,Tiancheng Fang,Jiwei Wang,Guoqing Guan,Abuliti Abudula
In this study, a novel anode-supported solid oxide fuel cell (SOFC) comprising a Bi2O3-doped NiO-ScSZ anode and an ScSZ electrolyte was successfully fabricated via a low-temperature co-sintering process at 1300 °C. The incorporation of 3 wt% Bi2O3effectively promoted the sintering of both the anode support and electrolyte layer, resulting in a dense, gas-tight electrolyte and a mechanically robust porous anode support. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses confirmed the formation of phase-pure, highly crystalline ScSZ with an optimized microstructure. Electrochemical performance measurements demonstrated that the fabricated cells achieved excellent power density, reaching a peak value of 0.861 W cm−2at 800 °C under humidified hydrogen fuel conditions. The cells maintained stable performance under dry methane operation, with a maximum power density of 0.624 W cm−2at 800 °C, indicating resistance to carbon deposition. Gas chromatographic analyses further revealed that the Bi2O3-doped NiO-ScSZ anode facilitated earlier and more stable electrochemical oxidation of methane-derived species compared with the conventional NiO-YSZ system, even under conditions of an elevated methane partial pressure. These findings demonstrate that Bi2O3co-doping, combined with low-temperature co-sintering, provides an effective approach for fabricating high-performance intermediate-temperature SOFCs with enhanced structural integrity and electrochemical stability. The developed methodology presents a promising pathway toward achieving cost-effective and durable SOFC technologies.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2019
·
IF 7.65
Ningyuan Zhu,Chunquan Li,Lingjun Bu,Cilai Tang,Sichu Wang,Pengfei Duan,Lunguang Yao,Jun Tang,Dionysios D. Dionysiou,Yonghong Wu
An innovative advanced oxidation process was successfully developed to photocatalytic-degradation of estrone through the synergistic effect of biochar and Bi/Bi 2 O 3 in bismuth-containing photocatalytic biochar (BiPB). The highest reaction rate constant ( k obs ) of estrone degradation by BiPB was 0.045 min −1 under the conditions of initial concentration of estrone =10.4 μmol L −1 , [BiPB] =1 g L −1 , pH = 7.0. The k obs was almost tenfold and more than 20 times than that of biochar without bismuth impregnation and pristine Bi/Bi 2 O 3 , respectively. The best photocatalytic performance of BiPB composites for the degradation of estrone was primarily attributed to generation of OH radicals. Impregnation of bismuth helped control the concentration of persistent free radicals (PFRs) and develop a hierarchical porous structure of biochar. The presence of biochar facilitated pre-concentration estrone on BiPB and improved the separation and transfer efficiency of charge carriers. The synergistic effect between biochar and Bi/Bi 2 O 3 contributed to the generation of OH radicals for estrone degradation under neutral pH conditions. The transformation pathway of estrone was also proposed based on the measured transformation products in the presence of BiPB. The high efficiency of BiPB composites indicated that this easily-obtained material was promising for estrone-wastewater treatment applications as a low-cost composite photocatalyst.
✓ 已验证
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Vasanthakumar V,Murad Alsawalha,Thamer Alomayri,Saud Allehyani,Yi-bo Hu,Ming-Lai Fu,Baoling Yuan
A novel composite of multiwall carbon nanotube (MWCNT) supported V 2 O 5 quantum dots decorated Bi 2 O 3 hybrid was prepared by the simple wet-impregnation method, and the photocatalytic performance of the prepared samples was investigated against the photodegradation of ciprofloxacin (CIP). Herein, different samples of pristine, V 2 O 5 /Bi 2 O 3 and MWCNT@V 2 O 5 /Bi 2 O 3 hybrid photocatalyst were prepared and systematically characterized by various physicochemical techniques. The characterization results demonstrated that the introduction of MWCNT can change the energy band gap of V 2 O 5 /Bi 2 O 3 , and the band energies vary with a constituent of MWCNT@V 2 O 5 /Bi 2 O 3 catalyst, in which MWCNT@V 2 O 5 /Bi 2 O 3 -5 (0.05 g@0.50 g:0.50 g) has the optimal band gap energy of 2.46 eV. The photocatalytic test demonstrates that the MWCNT@V 2 O 5 /Bi 2 O 3 -5 hybrid composites exhibited enhanced photocatalytic activity in CIP degradation compared to that pure and other photocatalyst and its degradation efficiency did not decrease significantly even after five cyclic experiments. The enhanced photocatalytic activity was due to the formation of heterojunction among MWCNT, V 2 O 5 and Bi 2 O 3 , which distinctly improved the separation efficiency of the photogenerated charge carrier, thus increasing the degradation performance. This work gives a new approach to designing an efficient photocatalyst for contaminants degradation.
✓ 已验证
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Weijian Xue,Min Li,Yingqing Zhao,Yifan Deng,Ying Li
The direct reduction of solid Bi 2 O 3 to Bi used for a high-performance anode is studied for the first time. Cyclic voltammetry results indicate that the conversion of solid Bi 2 O 3 is a one-step process. Electrolysis measurements using a solid Bi 2 O 3 cathode were carried out at various experimental conditions. X-ray diffraction (XRD) measurements of the electrolytic samples reveal that the solid Bi 2 O 3 can be completed reduced to Bi. The electrolytic Bi obtained at 2.6 V for 6 h achieves a long and steady cycle, a higher specific capacity than 403.2 mAh g −1 , and a higher capacity retention than 95.5 % cycling for even 4000 cycles, as well as an excellent rate capability. The electrochemical deoxidation approach can provide a green and straightforward pathway for producing high-performance sodium-ion batteries anodes.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 7.7
Shikun Li,Qin Zhou,Junru An,Silong Qiang,Weihao Hu,Zhixiu Sun,Jianjun Liao,Shiwei Lin
Traditional electrochemical methods often face challenges in accurately detecting heavy metal ions in seawater due to high salinity and complex organic matrices. Herein, a porous, defect-rich graphitic carbon nitride/bismuth–bismuth oxide (pdr-g-C 3 N 4 /Bi@Bi 2 O 3 ) composite was fabricated via two-step calcination and hydrothermal assembly, and applied for simultaneous Cd(II) and Pb(II) detection by SWASV. The unique porous structure and abundant defect sites facilitate efficient ion preconcentration and electron transfer, leading to high sensitivity and selectivity. Under optimized conditions in sodium acetate–acetic acid buffer (pH 6.0), the sensor exhibits linear detection ranges of 5–200 ppb for both Cd(II) and Pb(II), with limits of detection (LOD) of 0.513 ppb and 0.313 ppb, respectively. Remarkably, the sensor demonstrates excellent stability and accuracy even in unprocessed seawater samples, achieving LODs of 0.32 ppb for Cd(II) and 10.13 ppb for Pb(II). These results confirm the feasibility of direct, on-site detection of trace heavy metals in complex marine environments, offering a practical strategy for rapid environmental monitoring.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Lingfeng Li,Weihao Zhang,Xuexuan Luo,Xueyi Chang,Muqing Chen,Zhiyu Cheng,Yongfu Qiu,Yu Wang
Nanostructured bismuth oxide (Bi 2 O 3 ) holds great potential as a supercapacitor electrode material, owing to its high theoretical specific capacitance (1370 F g −1 ), low cost, and environmental benignity. Nevertheless, the capacitance of conventional Bi 2 O 3 is severely constrained by its inherently poor electrical conductivity and inferior redox activity. Herein, a nickel (Ni 2+ )-incorporation strategy enables the precise modulation of oxygen vacancies and energy band configurations of Bi 2 O 3 nanosheets, leading to significantly enhanced electrical conductivity and redox activity. Experimental characterizations demonstrated that an optimized Ni 2+ incorporation concentration of 1.00 mol% in Bi 2 O 3 nanosheets facilitated the formation of “active oxygen vacancies” (with unpaired electrons), a phenomenon rarely observed previously. In-depth mechanism discussions via energy band structure analysis and density functional theory (DFT) calculations further verified that Ni 2+ incorporation: (i) refines the electronic band structure; (ii) lowers the oxygen vacancy formation energy (thus facilitating their generation); and (iii) enhances the surface adsorption energy of OH − to optimize the adsorption-desorption process of OH − on the Ni-incorporated Bi 2 O 3 surface. Consequently, the optimal (Ni/Bi) 0.10 -Bi 2 O 3 electrode (corresponding to 1.00 mol% Ni 2+ incorporation) delivers a remarkable specific capacitance (836 F g −1 at 1 A g −1 , ~3 times that of pristine Bi 2 O 3 ) and exhibits favorable charge-discharge cycling stability (>80% capacitance retention and approximately 100% coulombic efficiency after 5000 cycles). This work establishes a feasible incorporation strategy for optimizing metal oxide electrodes and provides valuable insights into oxygen vacancy engineering to advance next-generation supercapacitors.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
·
2018
·
IF 3.647
Wanchun Yang,Qin Sun,Qing Lei,Wenbo Zhu,Yufeng Li,Jun Wei,Mingyu Li
A new Pb-free Ag paste containing a Bi 2 O 3 -B 2 O 3 -ZnO glass frit was developed for Al 2 O 3 substrate metallization . First, Bi 2 O 3 -B 2 O 3 -ZnO glass frits with various compositions and glass transition temperatures (T g ) of 322 °C–440 °C were synthesized by using a traditional melt-quenching method. Then, silver pastes containing different contents of the glass frit were sintered on an Al 2 O 3 substrate at temperatures ranging from 450 °C to 600 °C. The glass frit content and the sintering temperature had significant impacts on the electrical resistivity and shear strength of the product. The experimental results indicated that the silver film formed from the paste containing 7 wt.% glass frit and sintered at 600 °C for 15 min had a low electrical resistivity of 2.5 μΩ cm and a high strength of 28.5 MPa. These properties resulted from the formation of a stable glass network that supported the Ag network. Furthermore, ZnAl 2 O 4 was observed to form close to the interface of the Al 2 O 3 substrate, which could improve the shear strength . Moreover, the Bi-based glass frit could be a suitable substitute for Pb-based glass frits in the preparation of environmentally friendly silver pastes for forming thick Ag films on Al 2 O 3 substrates.
研究领域:
材料科学
·
电子材料
·
陶瓷与复合材料
·
烧结技术
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Qi Yuan,Sen Wang,Gaobin Liu,Kuoming Song,He Zhao,Shuai Yan,Xin Li
Dense MgO–12% TiO 2 (w) ceramics containing 12 wt% TiO 2 , which were doped with Li 2 CO 3 –Bi 2 O 3 composite sintering aids, were prepared at a low sintering temperature of 950 °C in this study. The effects of sintering additives on the sintering characteristics, phase composition, microstructure, and dielectric and mechanical properties of the ceramic samples were systematically investigated, and the influences of their phase composition and microstructure on the dielectric and mechanical properties were examined. The introduction of sintering aids produced a new Bi 4 Ti 3 O 12 phase in the sample structure, while the residual Bi 2 O 3 mixed with the newly formed Mg 2 TiO 4 and Bi 4 Ti 3 O 12 phases distributed at MgO grain boundaries formed a structure surrounding MgO grains. This structure filled the pores in the ceramic sample, which increased its density and enhanced the mechanical properties. At a Li 2 CO 3 –Bi 2 O 3 content of 15 wt%, the density, flexural strength , and Vickers hardness of the ceramic samples reached their maximum values of 3.4 g/cm 3 , 218.9 MPa, and 778.7 HV, respectively. However, the further increase in the Li 2 CO 3 –Bi 2 O 3 content deteriorated their dielectric properties although the dielectric constant and dielectric loss remained below 13.4 and 2.1 × 10 −3 , respectively. The findings of this work indicate that Li 2 CO 3 –Bi 2 O 3 sintering aids can significantly lower the sintering temperature of MgO–12% TiO 2 (w) ceramics and control their dielectric and mechanical properties through microstructural changes.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）