ChemistrySelect
·
2025
·Vol. 10
·期 27
·e01268
·
IF 2
Zhengfang Yang,Qianqian Guo,Qisheng Wang,Qing Wang,Guanbin Wen,Bin Zhang,Yanli Nie
Graphical Using macadamia nut shell from Yunnan as raw material to prepare antibacterial material can save resources. Combining NiO with AC, adding Bi and Fe to optimize antimicrobial properties and magnetic properties.A kind of antibacterial, adsorption-degradable, recyclable and reusable material was constructed.The composite materials show a good prospect in the practical application of water treatment. Although inorganic antibacterial materials that use photocatalytic technology are widely used to inhibit bacterial growth in water bodies, the external light environment limits the efficient utilization of photocatalytic antibacterial materials. The antibacterial materials are usually in powder form and are not conducive to recycling and reuse, limiting their development in practical applications. The main antibacterial ingredient (nickel oxide) was combined with Macadamia nutshell activated carbon (AC) to maintain efficient contact between bacteria and antibacterial active ingredients to apply the material for water treatment. First, different activators (H 3 PO 4 , ZnCl 2 , and KOH) were used to prepare activated carbon (AC) from Macadamia nutshells. Among the three activators, the AC prepared with H 3 PO 4 exhibited the largest specific surface area with well-dispersed pores. Then, Bi and Fe were doped to AC-NiO to improve their antibacterial and magnetic properties. After doping, the antibacterial rate increased to 95% with significantly improved magnetic properties. Moreover, AC-NiO/Bi and AC-NiO/Fe exhibited three antibacterial mechanisms: physical damage, ionic dissolution, and oxidative stress. Finally, the antibacterial test was performed on real water samples from Dianchi Lake in China. Results suggested that AC-NiO/Bi and AC-NiO/Fe could destroy microorganisms in river water samples. The material showed significant adsorption and degradation efficiency for malachite green, methylene blue, and methyl orange dyes. Since the composite material possessed excellent magnetic separation performance, it was easily recovered after use, effectively avoiding secondary pollution while reducing the material cost in practical applications.
研究领域:
环境科学
·
材料科学
·
水处理技术
·
纳米技术
·
抗菌工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
·
2024
·Vol. 39
·期 12
·2974-2981
·
IF 3.1
Wan-Feng Zhang,Qing Yang,Xiao-Ping Xia,De-Wen Zheng,Ze-Xian Cui,Yan-Qiang Zhang,Yi-Gang Xu
Sample preparation is a critical step to achieve reliable in situ chemical analysis. Sample mounting technique with a tin-based alloy was developed in recent years, which is particularly useful for high-precision volatile analyses by secondary ion mass spectrometry (SIMS). However, the success of this technique is hindered by challenges, such as complex alloy preparation and potential Pb contamination. Herein, we introduce a new Sn–Bi alloy preparation method that may overcome these hurdles and assess its potential as a standard preparation method for in situ volatile and isotope analyses. This new alloy can be manufactured with commercially available pure tin and bismuth metal (atomic Sn : Bi = 42 : 58), and its production requires only a heating plate and clean containers. This ensures its high accessibility to laboratories worldwide. The Pb content of the alloy is dependent on the tin and bismuth used. The material (Sn and Bi) from three different manufacturers were evaluated in this study, resulting in the virtually Pb-free MAC alloy (Pb <0.2 μg g−1). The SIMS U–Pb dating results of the zircon standards (Qinghu, Plešovice, and SA01) are consistent with the recommended values (within error). Furthermore, the mounted samples exhibit satisfactory relief on this alloy, suggesting that this alloy material is appropriate for the analysis of oxygen isotopes. The routine external precision of oxygen isotope ratios is better than 0.30‰ (2sd), on par with that obtained with epoxy mounts. The water background in the SIMS sample chamber can be recovered rapidly after sample transfer from the storage to the sample chamber. Hence, this tin-based alloy is suitable for sample mounting for SIMS volatile and isotope (incl. U–Pb) analyses.
研究领域:
材料科学
·
分析化学
·
地球化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Weihao Liu,Xu Jiang,Yan Yang,Lei Guo,Haoyang Wang,Lu Shao
Constructing high-performance mixed matrix membranes (MMMs) with highly permeable polymers of intrinsic microporosity (PIMs) and metal-organic frameworks (MOFs) faces critical challenge of poor interfacial compatibility between MOF fillers and the polymer matrix and difficulty in maintaining a defect-free interface at high filler loading (over 30 %). In this study, a Bi-HHTP loading as high as 50 wt% and uniform dispersion with excellent interfacial integrity is achieved in our high-performance MMMs through the elaborate design of multiple synergistic interfacial interactions, including hydrogen bonding between the phenolic hydroxyl groups of the 2,3,6,7,10,11-hexahydroxytriphenylene (HHTP) ligand in the Bi-HHTP filler and the cyano groups in the PIM-1 matrix and π-π stacking between their benzene ring structures. The optimized MMM exhibits a remarkable CO 2 permeability up to 4021 Barrer with an ideal CO 2 /N 2 selectivity of 42.1 which substantially outperforms the neat PIM-1 membrane and exceeds the 2019 upper bound. The enhanced separation performance of the MMMs stems mainly from the significant increase in CO 2 solubility selectivity with Bi-HHTP loading, which benefits from the inherent CO 2 affinity of Bi-HHTP and the effective suppression of N 2 dissolution by the rigidification of PIM-1 chain segments induced by strong interfacial interactions. Most importantly, the resulted high-loading MMMs exhibited remarkable structural stability, showing strong resistance to both physical aging and CO 2 -induced plasticization. This strategy overcomes the loading bottlenecks of state-of-the-art MMMs and contributes advanced membrane materials for efficient CO 2 capture.
研究领域:
材料科学
·
化学工程
·
膜技术
·
气体分离
·
金属有机框架材料（MOFs）
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2021
·
IF 19.503
Lingsong Wang,Huanshun Yin,Suo Wang,Jun Wang,Shiyun Ai
Bi/BiOCl/Bi 2 O 2 CO 3 heterojunction was prepared via one-step hydrothermal process under the synergistic catalysis of Ni 2+ , where Bi(NO 3 ) 3 was employed as Bi source, DMF was used as carbon source and reductant, NiCl 2 was adopted as Cl source and co-catalyst. The content of Bi, BiOCl and Bi 2 O 2 CO 3 can be adjusted by changing the reaction time, temperature, content of DMF and NiCl 2 . The doping of Bi enhanced the photocatalytic activity of BiOCl/Bi 2 O 2 CO 3 under visible-light. Bi/BiOCl/Bi 2 O 2 CO 3 presented photo-degradation activity for environmental pollutants of rhodamine B, sunset yellow and tetracycline, which were 13.01, 9.40, 1.50 times and 168.38, 10.90, 4.75 times higher than BiOCl and Bi 2 O 2 CO 3 , respectively. The improved photocatalytic activity was ascribed to the sensitized effect of Bi and BiOCl, the surface plasmon resonance effect and the heterojunction structure, which inhibited the recombination of photogenerated electron-hole pairs. The degradation mechanism for rhodamine B was discussed, and the decreased toxicity of the degradation products was demonstrated.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Liang Liu,Baocang Liu,Xuan Xu,Peng Jing,Jun Zhang
The electrochemical oxidation of glycerol is considered as a promising route to generate high value-added products. Rationally tuning the electronic structure of Pt catalysts by supporter and modifier is desirable for promoting the activity and stability of glycerol electrooxidation reaction (GEOR). In this work, we report Pt–Bi hybrid nanoparticles anchored hollow titanium nitride nanowires grew on carbon cloth (Pt 1-x -Bi x /TiN HNWs/CC (0≤ x ≤ 1)) as a self-supported monolithic electrode for efficient GEOR. Contributed by 3D porous nanotube structure, high corrosion resistance and conductivity of TiN, and strong electronic coupling effect of Pt, Bi, and TiN, the optimized Pt 0.95 -Bi 0.05 /TiN HNWs/CC electrode exhibits good catalytic activity and stability for GEOR. It shows a high peak current density of 88.4 mA cm −2 or 306.7 mA mg Pt −1 in 0.05 M glycerol +1.0 M KOH solution. After continuous electrolysis for 8 h in 0.05 M glycerol +1.0 M KOH solution at a constant potential of 0.85 V versus reversible hydrogen electrode (vs. RHE), a high glycerol conversion of 87.0%, a moderate selectivity of 36.6% for glyceric acid , and a good stability were achieved, which is superior to other compared electrodes and most of the reported Pt–Bi catalysts.
研究领域:
电化学
·
材料科学
·
催化
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2019
·
IF 5.107
Dafeng Zhang,Hao Liu,Changhua Su,Hong Li,Yanling Geng
Bi/BiOBr composites with oxygen vacancies were synthesized by a simple combustion method. The as-synthesized catalysts were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, electron paramagnetic resonance spectroscopy, UV–Vis diffuse reflectance spectroscopy, and photoluminescence spectroscopy. Along with the formation of BiOBr, the reduction of partial Bi 3+ cations was achieved, and thus Bi/BiOBr composites were one-pot obtained. Moreover, the formation of oxygen vacancies was confirmed. Compared with pure BiOBr, Bi/BiOBr composites exhibit significantly improved photodegradation performances under visible light irradiation, which can be attributed to the surface plasma resonance effect, electron sink effect of metallic Bi nanoparticles, and the narrowed band gap caused by the formed oxygen vacancies. Moreover, the main active species and photocatalytic mechanism of Bi/BiOBr under visible light irradiation were discussed in detail.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2025
·
IF 4.9
Nannan Huang,Shuhao Liang,Xiangyang Liang,Huining Chai,Yingjie Sun,Lili Lyu,Weiqiang Tan
The interfacial compatibility of heterojunction photocatalysts critically governs the interaction modes between constituent materials. Herein, a flower-like Bi-BDC-NH 2 /Ag 2 CO 3 heterostructure was fabricated via a simple ion-exchange solution method, serving as a robust photocatalyst for the efficient photocatalytic reduction of Cr(VI) in simulated wastewater under visible-light irradiation. Ag 2 CO 3 nanosheets were in-situ grown on the surface of three-dimensional Bi-BDC-NH 2 , forming an Ag 2 CO 3 -on-Bi-BDC-NH 2 type II heterojunction that establishes intimate interfacial contact, significantly accelerating the charge and mass transport dynamics. In comparison with pure Bi-BDC-NH 2 and Ag 2 CO 3 , the optimal Bi-BDC-NH 2 /Ag 2 CO 3 -50 (with a weight ratio of 0.5:1) exhibited dramatically enhanced photocatalytic activity, achieving 99% Cr(VI) reduction within 2 hours under visible light (>420 nm, 150 W xenon lamp). Mechanistic investigations, including energy band structure analysis, radical trapping experiments, and photoelectrochemical measurements, revealed that the heterojunction interface significantly promotes the separation and transfer of photogenerated electron-hole pairs. This work provides valuable insights into the rational design of MOF-based heterojunction photocatalysts and their applications in environmental remediation.
研究领域:
环境科学
·
材料科学
·
化学工程
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
Materials Advances
·
2023
·Vol. 4
·期 10
·2365-2371
·
IF 5
Shaofan Fang,Jinbo Huang,Huixia Li,Jingheng Nie,Zexiang Liu,Feier Fang,Haizhe Zhong
Luminescent metal halides doped with ns2-metal ions, such as 6s2-metal Bi3+, show excellent optoelectronic properties. However, the origin of the high photoluminescence quantum yield (PLQY) of Cs2SnCl6:Bi remains controversial and unclear. In this study, a series of Cs2SnCl6:Bi were synthesized by adopting different tin precursors of SnCl2/SnCl4. The samples from SnCl2 exhibited much higher PLQY than those from SnCl4, and the doping concentrations of Bi3+ had little effect on the high PLQY. When H3PO2 is added to the precursor of SnCl4 to reduce Sn4+ to Sn2+, the prepared Cs2SnCl6:Bi shows bright emission light and high PLQY. The high PLQY of Cs2SnCl6:Bi is attributed to the co-doping of Bi3+ and Sn2+. [SnCl4]2− and two VCl induce a large extra vibrational energy of the heavy localized excitons from [BiCl5]2− to enhance the efficiency of radiative recombination for high PLQY. This work deepens the understanding of the luminescence mechanism of Cs2SnCl6:Bi and supplies significant references for developing more perovskite materials with outstanding luminescence.
研究领域:
材料科学
·
光电
·
化学
✓ 已验证
产品关联
DOI
高影响因子
ChemSusChem
·
2022
·Vol. 15
·期 7
·e202200226
·
IF 9.14
Huaxin Li,Xian Yue,Jing Che,Zhou Xiao,Xianbo Yu,Fenglei Sun,Chao Xue,Junhui Xiang
Graphical Networking at its best : The 3D self-supporting nanonetwork structure of Cu−Bi aerogels provides abundant reactive sites and electron transport channels for efficient electrocatalytic reduction of CO 2 to formate. The electrocatalytic reduction of CO 2 (CO 2 RR) to CO, formate, methane, and other high-value compounds is a promising technique. However, current electrocatalysts suffer from drawbacks such as few active catalytic sites, poor selectivity and low stability, etc, which restrict the practical application. Although monatomic metal catalysts have been widely reported in recent years, high performance non-noble metal aerogels were rarely investigated for electrocatalytic CO 2 RR. Herein, Cu−Bi aerogels with boosted CO 2 RR activity were well constructed by a simple one-step self-assembly method. The resultant Cu 1 Bi 2 exhibits excellent CO 2 RR activity with high faradaic efficiency (FE) of 96.57 % towards HCOOH at a potential of −0.9 V vs. RHE, and the FE HCOOH remains over 80.18 % in a wide potential window (−0.8 V to −1.2 V vs. RHE). It demonstrated that the enhanced CO 2 RR activity of Cu−Bi aerogels could be attributed to the 3D self-supporting structure of the catalysis, synergistic effect, and low interfacial charge transfer resistance.
研究领域:
材料科学
·
电化学
·
催化
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shaoqing Pan,Miao Cheng,Chen Ma,Huaijia Jing,Tongyu Shen,Jing Hu,Qianqian Liu,Tao Wei,Ruirui Wang,Wanfei Li,Bo Liu
With the unprecedented rise of flexible electronic technology, it is imperative to develop the matched flexible power supply systems. Magnesium ion battery (MIB), as a promising next-generation battery system, shows significant potential as a power source for flexible electronic devices. However, the research on flexible MIB remains in its infancy, and the exploration of novel and reliable flexible electrodes is crucial. Herein, a binder-free and flexible self-supporting electrode with bimetallic Bi–Sn nanoparticles anchored in carbon nanofiber (CNF@Bi-Sn) was fabricated via electrospinning method combined with subsequent calcinations, and applied to MIBs for the first time. The CNF@Bi-Sn simultaneously integrated the advantages of hierarchical porous carbon nanofiber framework, the homodisperse nanosized Bi-Sn particles, and the increased phase/grain boundaries, which were beneficial for improving the structural stability and facilitating Mg 2+ diffusion kinetics. The CNF@Bi-Sn alloy anode demonstrated impressive performance with high initial specific capacity of 738mAh/g, exceptional rate capability and outstanding cycling stability of 150mAh/g at 40 mA g −1 after 100 cycles. Significantly, the quantitative kinetic analysis, ex-situ SEM, TEM and XRD were conducted to reveal the structural evolution during cycling and the magnesium storage mechanism based on reversible two-phase alloying/de-alloying transformation reactions. Furthermore, the full batteries were assembled, demonstrating its potential for practical applications. This protocol sheds light on exploring high-performance flexible self-supporting alloy anode for future flexible power systems.
研究领域:
材料科学
·
能源存储与转换
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Energy & Fuels
·
2020
·Vol. 4
·期 7
·3334-3339
·
IF 5.503
You Xu,Tianlun Ren,Shanshan Yu,Hongjie Yu,Shuli Yin,Ziqiang Wang,Xiaonian Li,Liang Wang,Hongjing Wang
The electrocatalytic nitrogen reduction reaction (NRR) for ammonia (NH3) synthesis is highly desirable yet still challenging. Catalysts, as the core component of electrocatalytic NRR systems, are a specific focus of research. In this work, we demonstrate that NRR active semimetal bismuth (Bi) ultrathin nanosheets (Bi NSs) could be prepared by means of the in situ electrochemical reduction-assisted exfoliation of BiOCl nanoplates (BiOCl NPs). Such a conversion, from semiconductive BiOCl NPs to semimetal Bi NSs, could create enlarged surface areas and bring about abundant under-coordinated Bi sites and accelerated electron transport capability. With these advantageous properties, the as-converted Bi NSs exhibit efficient NRR electrocatalytic activity in 0.1 M Na2SO4, achieving a high faradaic efficiency (14.14%) and NH3 yield (11.11 μg h−1 mgcat.−1) at −0.5 V (vs. reversible hydrogen electrode), as well as high NH3 selectivity.
研究领域:
材料科学
·
电化学
·
催化
·
能量转换
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 10
·2927-2935
·
IF 2.936
Ri Chol-Nam,Hwang Kuk-Jin,Kim Tu-Nam,Ro Yong-Hak,Ri Jong-Su
Herein, a novel ternary Bi/Bi 2 WO 6 /amorphous Bi 4 V 2 O 11 heterojunction photocatalyst was first synthesized via a facile one-pot solvothermal approach using ethylene glycol as a reaction medium. In this ternary heterojunction system, highly homogeneous-dispersed metal Bi and Bi 2 WO 6 nanoparticles were supported on amorphous Bi 4 V 2 O 11 flakes. Because of the Surface Plasmon Resonance (SPR) efficiency of metal Bi nanoparticles, as-fabricated Bi/Bi 2 WO 6 /amorphous Bi 4 V 2 O 11 heterojunction photocatalyst exhibited a strong light absorbance capacity in the visible-light and near-infrared light range, which can be verified by UV–vis diffuse reflectance spectra measurements. The Bi/Bi 2 WO 6 /amorphous Bi 4 V 2 O 11 heterojunction photocatalyst showed remarkably enhanced photocatalytic activity toward the photoreduction of heavy metal ion Cr(VI) and the photodegradation of MB under visible-light irradiation. The drastically enhanced photocatalytic activity in the ternary Bi/Bi 2 WO 6 /amorphous Bi 4 V 2 O 11 system could be attributed to the SPR effect of metal Bi and the promoted separation and transport efficiency of photo-induced charge carriers stemming from the construction of ternary heterojunction. Moreover, Bi/Bi 2 WO 6 /amorphous Bi 4 V 2 O 11 heterojunctions exhibited a good cycling stability for Cr(VI) reduction after 5 cycles. This study may be supply new insight into the fabrication of highly efficient and stable Bi 4 V 2 O 11 -based photocatalysts, and it is expected to have certain theoretical and experimental value in the design and exploitation of novel heterojunction photocatalyst. Graphical Abstract
研究领域:
材料科学
·
环境科学
·
光催化技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）