CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Ying Xu,Zhiwen He,Shuili Yu,Lei Li,Luyang Cai,Peng Yi
Recently, the heterogeneous advanced reduction processes (ARPs) for bromate (BrO 3 - ) degradation have attracted considerable attention due to its stable performance and easy combination with UV disinfection. In this study, a UV/TiO 2 -Bi advanced reduction process (ARP) was established for BrO 3 - removal without adding external sacrificial agents. In the UV/TiO 2 -Bi ARP, Bi nanoparticles (NPs) doped on the TiO 2 acted as hole trapping centers, while TiO 2 NPs were used as reduction centers for the reduction of BrO 3 - , which enhanced the charge carrier separation. The UV/TiO 2 -Bi-1% ARP exhibited the highest BrO 3 - removal rate without the addition of sacrificial agents in the reaction solution compared to UV/TiO 2 ARP and the UV/TiO 2 -Bi ARP at other Bi/Ti ratios. The result of 72% removal of 200 µg/L BrO 3 - at 60 min by 0.2 g/L TiO 2 -Bi-1% in tap water at pH 6.8 and 7.71 mg/L dissolved oxygen (DO) demonstrates the promising potential of the UV/TiO 2 -Bi ARP for the removal of BrO 3 - in practical applications. Compared to the 99.5% removal in deionized (DI) water at 60 min, lower BrO 3 - reduction in tap water was likely attributed to the consumption of photo-generated electrons by NO 3 – and the adsorption of natural organic matter on the surface of TiO 2 -Bi-1% nanocomposites. The study provides not only a novel BrO 3 - removal system with good photo-reduction performance, but also some guidance for the influence of constituents in raw water on the treatment of BrO 3 - .
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2023
·
IF 3.9
Wei Yang,Yanhua Gao,Mingli Cao
The enhanced photocatalytic properties of Z-Scheme Bi@BiOCl/C3N4-DPY heterojunction materials were successfully prepared by the ultrasonic-assisted coprecipitation method. The Bi@BiOCl/C3N4-DPY heterojunction exhibited remarkable photocatalytic activity under visible light irradiation, and the degradation rate of methyl orange (MO) was about 90.6% in 180 min. This impressive efficiency is mainly due to the Z-Scheme charge transfer mechanism in Bi@BiOCl/C3N4-DPY, resulting in the efficient separation of charge carriers and an increase in the REDOX potential of photogenerated electrons and holes. C3N4 was modified with a π-deficient conjugated pyridine ring, which caused the light absorption redshift, promoted the formation of oxidizing •O2–, and improved the photocatalytic activity. At the same time, a well-aligned heterojunction is formed at the interface between C3N4-DPY and BiOCl, facilitating the seamless transfer of light-induced electrons from the LUMO of C3N4-DPY to the CB of BiOCl. In addition, the addition of Bi introduces a unique band gap reduction effect, resulting in a change in the density of the band states, which further promotes charge transfer and separation. It is worth noting that the introduction of metallic bismuth (Bi) brings about a unique band gap reduction effect, resulting in a change in the density of states within the band, which ultimately promotes charge transfer and separation. The Z-scheme charge migration inside Bi@BiOCl/C3N4-DPY further promotes the efficient separation of photogenerated electron–hole pairs, greatly improving the overall efficiency of the material. The Z-structured photocatalyst developed in this study has great application potential in various fields of photocatalysis.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Chenxi Liu,Zhonghua Dai,Yuanyuan Zheng,Xujun Li,Muhammad Nasir Rafiq,Shinya Tsukada,Yu Cong,Tomoaki Karaki,Shun Zhou
Potassium niobate sodium-based ceramics with unique optical and electrical properties are used to develop transparent energy storage capacitors. The (1- x )K 0.5 Na 0.5 NbO 3 - x Bi(Sr 0.5 Hf 0.5 )O 3 (KNN-BSH, x = 0, 0.025, 0.05, 0.075, 0.1) ceramics are prepared and intensively investigated in this work. The results show that the average grain of KNN-BSH ceramics reaches a minimum of 0.64 μm, owing to the effective suppression of grain growth by (Sr 0.5 Hf 0.5 ) 3+ doping at the B-site. The KNN-BSH ceramics exhibit pseudo-cubic phases and are excellent relaxation ferroelectric ceramics. In particular, the total energy storage density ( W total ) of 0.95KNN-0.05BSH ceramic is 3.94 J/cm 3 , the recoverable energy storage density ( W rec ) is 2.85 J/cm 3 , and the discharge time ( t 0.9 ) is 0.92 μs, which is optimal for comprehensive performance. Besides, the band gap of 0.975KNN-0.025BSH reaches a maximum value of 3.13 eV with a high transmittance of about 57.3 % at a wavelength of 950 nm. The results indicate that KNN-BSH ceramics can be an alternative for transparent energy storage materials.
研究领域:
材料科学
·
电介质物理学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Keru Cao,Fangyu He,Jun Yan,Weiwei Zhu,Yanan Wang,Yuheng Zhang,Biao Zhang,Xiaohua Yu,Qingfeng Shen,Chunxia Liu,Qi Wang
Electrochemical detection techniques are not sensitive in detecting isomers with similar structures and properties due to the disadvantages of some sensors such as instability, poor selectivity and susceptibility to environmental interference. Therefore, calcined metal–organic framework structure (Bi-MOF) was used to prepare its derivative Bi@C nanocomposites, and materials with multiple surface active sites and large specific surface area were developed to improve the current response signal of the detected substance. The morphology and structure of the prepared Bi@C were tested by XRD, SEM and other characterisation means. The electrochemical response of Bi@C nanocomposites was studied using an electrochemical workstation for hydroquinone (HQ) and catechol (CC) electrochemical detection. An electrochemical method was developed for the simultaneous determination of hydroquinone and catechol in a simple and highly selective manner. Differential pulse voltammetry (DPV) was used for simultaneous detection of HQ and CC. The results show that Bi@C electrode can detect isomers with high selectivity. Bi@C was detected in the range of 2–600 μM and 2–800 μM for HQ and CC, respectively, in pH = 7 solution. The detection limits were 0.14 μM and 0.12 μM(S/N = 3), respectively. The sensor is successfully applied to detect HQ and CC of real samples and has low detection limit, good recovery, high selectivity, stability and reproducibility. It provides a new idea for electrochemical detection.
研究领域:
材料科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Qiang Zhao,Wenjun Guo,Fengyu Liu,Lin Liu,Dandan Li,Dazhong Zhong,Genyan Hao
It is essential that the development of efficient and excellent stability electrocatalysts for water oxidation , which could covert effectively renewable electricity to chemical energy . Herein, it is fabricated firstly in situ that a novel Au–B i anode oxygen-evolving catalyst with an outstanding catalytic performance for water splitting by electrolytic deposition from dilute AuCl 4 − solutions in potassium tetraborate electrolyte at pH 11. The H 2 generated for water splitting rate of the Au–B i is 116.38 μmol cm −2 h −1 and the Faradaic efficiency reaches 90.43% in 0.1 M tripotassium phosphate solution . Moreover, the main active component of the Au–B i is gold oxide (Au 2 O 3 ). What is more, this work expands the research on Au-based oxygen-evolving catalysts and provides increased insight into water splitting.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2017
·
IF 4.95
Gang-Wei Wu,Yi-Min Shen,Xiao-Qiong Shi,Hao-Hua Deng,Xiao-Qing Zheng,Hua-Ping Peng,Ai-Lin Liu,Xing-Hua Xia,Wei Chen
In this work, bimetallic Bi/Pt nanoparticles in bovine serum albumin biomolecular scaffold (BSA-Bi/PtNPs) were synthesized through a facile and green method. As compared with BSA-PtNPs, the BSA-Bi/PtNPs possess enhanced peroxidase-like catalytic activity . Moreover, the BSA-Bi/PtNPs are stable in harsh conditions such as high temperature, extreme pH environments, and high ionic strength , as well as in common biological matrixes. These prominent advantages enable the BSA-Bi/PtNPs to be applied to a wide range of fields. Bioassays, such as serum glucose detection, extracellular hydrogen peroxide (H 2 O 2 ) monitor, and cancer cells labeling, have been realized with satisfying results. The linear range of glucose determination was from 1 to 100 μM and the limit of detection (LOD) was 0.2 μM. The H 2 O 2 released from each MCF-7 cell after stimulation was calculated to be 2.66 × 10 −16 mol/s. By utilizing folic acid as a recognition element, tumor cell could be readily distinguished by BSA-Bi/PtNPs and the LOD for MCF-7 cell detection was 90 cells.
研究领域:
生物化学
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纳米医学
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分析化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 17
·1-10
·
IF 2.8
Gong Qinglin,Hu Ming
Bi(Mg 0.5 Hf 0.5 )O 3 (BMH) has been frequently exploited to engineer the material’s phase structure, micromorphology, dielectric, piezoelectric, and energy storage performance of BaTiO 3 (BT)-based ceramics for the optimization of multifunctional dielectrics. Herein, combined with the Ba(Ti 0.8 Sn 0.2 )O 3 relaxor, (1 – x )Ba(Ti 0.8 Sn 0.2 )O 3 – x Bi(Mg 0.5 Hf 0.5 )O 3 (BTS- x BMH) ceramic samples were prepared through a solid-state reaction process. The micromorphology, dielectric properties, ferroelectric properties, and energy storage performance of BTS- x BMH ceramics were engineered by increasing BMH content. The addition of BMH can refine the grain size, increase the relaxation degree, raise the breakdown strength, and facilitate the production of the polar nanoregions in the BTS- x BMH ceramics. Compared to pure BTS, the energy efficiency of BTS-BMH is remarkably enhanced, which originates from the disruption of the ferroelectric long-range order owing to the BMH modification. At the maximum applied field of 100 kV/cm, the largest energy density of W rec = 0.3 J/cm 3 was realized at the composition of x = 0.05. The highest energy efficiency of η = 99% was acquired for x = 0.15 at 110 kV/cm. Moreover, the energy efficiency for x = 0.15 displays good temperature stability. These findings can guide the further optimization design of environmentally friendly BT-based ceramic capacitors for energy storage applications.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2022
·
IF 6.76
Junfeng Yang,Yuyang Wu,Yanhui Dong,Hao Cui,Chenyang Shi,Hang Sun,Shengyan Yin
Herein, a ternary Bi@H-TiO 2 /B-C 3 N 4 type II heterostructure is successfully designed and prepared via metal Bi as cocatalyst for photocatalytic H 2 generation. As expected, under λ > 300 nm light, the highest photocatalytic hydrogen production rate (HPR) of Bi@H-TiO 2 /B-C 3 N 4 is up to 223.08 μmol g −1 h −1 . Excitingly, under visible light (λ > 400 nm), the highest HPR of Bi@H-TiO 2 /B-C 3 N 4 is increased to 18.84 μmol g −1 h −1 , which is about 67.3 times, 37.7 times and 6.8 times as high as that of H-TiO 2 , B-C 3 N 4 and H-TiO 2 /B-C 3 N 4 under the same conditions, respectively. Moreover, the electrochemical impedance spectroscopy and transient photocurrent tests manifest that the interface resistance of Bi@H-TiO 2 /B-C 3 N 4 composite decreases and the photocurrent density increases after loading metal Bi. These results indicate that loading metal Bi as cocatalyst (providing more electron trapping sites) is beneficial to improve photocatalytic activity in the type II heterostructure composite. And the electron transfer directions (B-C 3 N 4 → H-TiO 2 → Bi or B-C 3 N 4 → Bi) are proved by ultraviolet photoelectron spectroscopy test. Therefore, the Bi@H-TiO 2 /B-C 3 N 4 photocatalyst with strong visible light absorption is expected to be a promising candidate in photocatalytic fields under visible light.
研究领域:
材料科学
·
能源化学
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Hongge Cao,Yuhang Wu,Ruicai Gao,Peijie He,Qiang Wu,Jixiang Cui,Longyan Gu,Tuo Cai,Ping Peng,Yan Lei,Yuan Lin,Zhi Zheng
Ag 2 S colloidal quantum dots (CQDs) are promising candidates for solution-processable and eco-friendly solar cell applications, but the power conversion efficiency is still far from its theoretical value (∼30 %). Where the migration of Ag ions in Ag 2 S CQDs may be responsible for this. In this work, to suppress the migration of Ag ions and further enhance the photoelectric properties of the Ag 2 S CQDs, Bi elements have been doped into the Ag 2 S CQDs via a facile route at low temperature. Without heat, the Bi content in the resulting Bi-doped Ag 2 S CQDs can be adjusted by adding raw BiI 3 in the reaction system. The photoelectric responsivity of Bi-doped Ag 2 S CQDs is about 6 times greater than that of the undoped Ag 2 S CQDs. Finally, solid-state solar cells have been constructed, and 1.5 % power conversion efficiency has been obtained. Current work may provide an avenue to produce high-quality Ag 2 S CQD-based photoelectric materials.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2024
·
IF 5.5
Bo Wang,Zhenxing Wang,Yu Wan,Yimu Wang,Shuang Gao,Yan Chen,Qingsong Luo,Changhao Feng
Background Developing high-performance n -butanol gas sensors is of great significance for environmental protection and human health. The Bi-doped ZnFe 2 O 4 nanofibers exhibit promising potential as a viable option for n- butanol sensors. Methods In this study, a series of high response and fast response n -butanol gas sensors were successfully fabricated by Bi-doped ZnFe 2 O 4 nanofibers with different atomic percentages (0 %, 1 %, 3 %, 5 %), which were synthesized by a facile electrospinning method. Significant findings The nanofibers with a Bi/Zn molar ratio of 3 % showed a response value of 23.6 to 100 ppm n -butanol at 175 °C, which was 2.4 times higher than that of the pure ZnFe 2 O 4 nanofibers, and with a lower concentration detection limit (1.5 for 100 ppb n -butanol). In addition, the gas sensing materials had a good selectivity and long-term stability to n -butanol, and the mechanism of the good sensing performance of Bi doped ZnFe 2 O 4 nanofibers for n -butanol is also analyzed in this paper.
研究领域:
材料科学
·
环境科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·
IF 19
Qiang Wang,Mengjie Wang,Li Wen,Wei Zeng,Binghui Ge,Chaofeng Zhang,Yang Yue,Siliang Wang
The emerging aqueous zinc-ion batteries (ZIBs) have received extensive attention and research due to their unique advantages of low cost, safety, and environmental friendliness. However, the development of appropriate cathode materials to improve battery performance remains a major challenge. Herein, a new MXene and Bi (MXene/Bi) composite material is first applied as the (de)intercalation cathode of ZIB. The dispersed MXene nanosheets in the composite materials greatly improve the conductivity and hydrophilicity of the electrode, and prevent the stacking and the volume expansion in the charge/discharge process of 2D Bi fragments. The experimental results show that composite MXene/Bi electrode has remarkable capacity and ultralong life. Next, the good kinetics and (de)intercalation energy storage mechanism of ZIB are revealed through abundant electrochemical tests and ex situ characterization. The quasi-solid-state (QSS) ZIB is also constructed, showing superior electrochemical performance, flexibility, pressure resistance, and heat resistance. Besides, the QSS ZIB can be used directly as a self-powered pressure sensor to monitor the external pressure in real time based on the response current. This study not only demonstrates that MXene/Bi is a potential cathode for ZIBs, but also offers a feasible path to explore and design the next generation of high-performance multifunctional ZIBs.
研究领域:
材料科学
·
电化学
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
Materials Research Express
·
2019
·Vol. 6
·期 4
·046532
·
IF 1.449
Chen Chen,Binxu Lan,Kang Liu,Hongbo Wang,Yuxin Deng,Yufei Zuo,Xiaohan Xu,Cheng Chen,Zhen Chen,Ping Luo,Shijie Dong
Herein, we prepared Al–Bi–NaCl composites by mechanical ball milling and investigated the effects of ball milling time on their hydrogen production performance, additionally analyzing energy conversion during ball milling. Subsequently, the effects of Bi and NaCl content and initial temperature on hydrogen production performance were studied. Moreover, the phase, morphology, and elemental composition of these composites and by-products of their hydrolysis were studied by a range of instrumental techniques. An optimal hydrogen yield of 1140 ml g−1 (in 1 h) was obtained at a milling time of 4 h, and the results of instrumental characterization showed that no new phase was formed during ball milling (i.e., Al, Bi, and NaCl were only mechanically mixed) and that the constituent elements were evenly distributed in the composite. Hydrolysis by-products were identified as porous Al(OH)3 and AlO(OH), that is, Bi did not participate in the reaction.
研究领域:
材料科学
·
能源工程
✓ 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）