Carbon Letters
·
2025
·
IF 5.8
Du Xue,Han Tong,Jin Biao,Meng Long-Yue,Han Lian-Hua
Contamination of food with heavy metal ions and nitrites poses a serious threat to human health. Consequently, the development of fast and sensitive platforms for detecting these contaminants is urgently required. In this paper, a novel MnMgFe-LDHs/DC sensor is constructed based on a simple strategy, in which MnMgFe layered double hydroxide (LDHs) is used as a metal precursor, and a unique "island bridge" carbon network structure is generated by its pyrolysis with ZIF-8@B, N-WMCNTs. The electrical conductivity was enhanced, and a large electroactive surface area was provided for the MnMgFe-LDHs/DC. The electrochemical properties of Pb 2+ , Cd 2+ and nitrite were investigated using this electrode as a working electrode. Under optimized conditions, the sensing platform exhibited a wide linear range with the Pb 2+ , Cd 2+ , and NO 2 − limits of detection of 46.16 nM, 59.25 nM, and 0.083 μM, respectively. Of particular note is that this sensing platform exhibits outstanding anti-interference capabilities. It can precisely and efficiently conduct the detection of nitrite and heavy metal ions in pickled foods.
✓ 已验证
DOI
高影响因子
Journal of Environmental Sciences
·
2025
·
IF 6.3
Rong Wang,Weikun Zhu,Jiayi Hu,Siyang Liao,Cheng Chen,Baihang Chen,Shaobin Huang,Jiangyao Chen
Bismuth-based photocatalyst has garnered significant attention for degrading dyes and antibiotics in wastewater. However, their photocatalytic performance remains limited due to the high recombination rate of photoinduced carriers. Constructing a bismuth-based photocatalyst with high-efficiency and rapid degradation performance is crucial for its practical application. In this study, BiOBr nanosheets, with an ultra-thin structure and abundant (001) facet exposure, exhibiting stable photoelectric conversion ability, were successfully synthesized through a simply solvothermal method. Under simulated solar light irradiation, the catalyst achieved 100 % degradation of rhodamine B within 5 min and 97.6 % degradation of tetracycline within 30 min, while over 90 % degradation efficiency after 5 cycles was preserved, demonstrating high, rapid and stable performance of the catalyst. Moreover, 90.7 % and 44.5 % of removal and mineralization efficiencies for TC within 30 min were observed under natural sunlight irradiation. Superoxide radicals and photo-generated holes were the primary species responsible for the degradation of pollutants and the former contributed more effect in long reaction time. Finally, a possible photocatalytic oxidation pathway of tetracycline was proposed based on identified five main intermediates. The BiOBr nanosheets catalyst exhibits great potential for industrial applications in the elimination of hazardous and difficult-to-degrade organic pollutants in wastewater.
✓ 已验证
产品关联
DOI
高影响因子
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
·
2020
·Vol. 2020
·期 42
·4007-4014
·
IF 2.529
Lu Qi,Zhaohui Chen,Lu Li,Qun Jing,Na Li,Zhongqi Jiang,Xiaoyu Dong,Ming-Hsien Lee
Two homologous new mixed-metal phosphates K 2 PbBi 2 (PO 4 ) 2 (P 2 O 7 ) ( I ) and Rb 2 CdBi 2 (PO 4 ) 2 (P 2 O 7 ) ( II ) were successfully synthesized in A 2 BBi 2 (PO 4 ) 2 (P 2 O 7 ) (A = K, Rb, B = Pb, Cd) system through the traditional high-temperature solid-phase method. The single crystal structures of the two compounds are shown to be the unique three-dimensional (3D) framework composed of different types of layers, but not isomorphic. We compared series compounds A 2 PbBi 2 (PO 4 ) 2 (P 2 O 7 ) (A = K, Rb, Cs), which are isomorphic and crystallize in the same space group Pnma . It is noteworthy that they are distinct different in degree of structural disorder, which is tuned by A-site cations. The effect of A-site cations is recognized by analyzing the disorder degree in three related structures and other available 182 mixed-metal phosphates. To the best of our knowledge, such structural analysis is rarely reported in inorganic phosphates and the cation modulation strategy can be used to guide structural disorder according to the difference-value (D-value) of cation radii. Furthermore, the syntheses, thermal analysis, relevant spectroscopic measurements and theoretical calculations for I and II compounds were also discussed. Graphical Two new mixed-metal phosphates K 2 PbBi 2 (PO 4 ) 2 (P 2 O 7 ) and Rb 2 CdBi 2 (PO 4 ) 2 (P 2 O 7 ) were firstly reported and the cation size effect has substantial influence on the crystal structural disorder combining with the title compounds and 182 phosphates.
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2019
·Vol. 19
·期 9
·5723-5728
·
IF 1.093
Qiu Linlin,Chu Zhudan,Yang Shuli,Chen Yue,Song Lixin,Du Pingfan,Xiong Jie
Basalt fibers loaded with titanium dioxide (BFs/TiO2) were successfully fabricated via a simple and cost effective microwave hydrothermal method. The morphology and structure of the BFs/TiO2 were characterized by transmission electron microscopy, scanning electron
microscopy, and X-ray diffraction. The photocatalytic activity of the BFs/TiO2 was validated by the photodegradation test of Rhodamine B (RhB) under ultraviolet light irradiation. The photocatalytic reaction result revealed the excellent photocatalytic activity of the BFs/TiO2,
with 94% of RhB decomposed at 5 h after irradiation. Furthermore, the recycling test indicated that the BFs/TiO2 exhibited excellent recyclability with photocatalytic degradation rate still maintained at 86% in the fifth cycling test.
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Guangchang Yang,Shenglong Yang,Feiyan Lai,Chunlei Tan,Jia Qiao,Hongqiang Wang,Qianqian Jin,Xiaohui Zhang
Current research has found the amorphous/crystal interface has some unexpected electrochemical behaviors. This work designed a surface modification strategy using NaBH4 to induce in situ conversion of the surface structure of Ni-rich LiNi0.8Co0.1Mn0.1O2 (NCM811) into TM-B-O amorphous interface layer. Oxidizing the surface from transition metals (TM) with high valence and reductive BH4– in a weak polar medium of ethanol results in an easy redox reacton. A TM-B-O amorphous structure is formed on NCM811 surface. The action of reactive wetting ensures a complete and uniform structure evolution of the surface crystals. The complete coverage protects the outer crystal and the heterogeneous interface impedance between the modified layer and bulk is reduced. More importantly, this amorphous interface layer through in situ conversion enhances the heterogeneous link at interface and its own structural stability. The modified NCM811 (TB2@NCM) treated with 1 wt % NaBH4 shows excellent electrochemical performance, especially cyclic stability. At a high cutoff voltage of 4.5 V, the capacity retention was 72.5% at 1 C after 500 cycles. The electrode achieves 173.7 mAh·g–1 at 10 C. This work creates a modifying strategy with potential application prospect due to simple technology with low-cost raw material under mild operating conditions.
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Shihai Miao,Xulong Lv,Xihui Shan,Yi Zhang,Yanjie Liang
Discovering multifunctional luminescent materials to meet the demands of modern spectroscopy is of great significance. However, it is a standing challenge to enable multiple luminescence properties in a single material system via single metal ion doping. Here, we report the inherently Bi3+/Bi2+ codoped Ca3Ga2Ge3O12 persistent phosphor where Bi3+ is in situ reduced to Bi2+. This phosphor can act as an efficient multimodal luminescence material, which simultaneously exhibits long-lasting (>12 h) ultraviolet-B (UVB) and near-infrared (NIR) dual-band persistent luminescence after irradiation by 254 nm ultraviolet (UV) light. UVB and NIR afterglow are ascribed to the distinct Bi3+ and Bi2+ emitters, respectively, proven by comprehensive spectroscopic investigations including X-ray absorption near-edge structure spectra and X-ray photoelectron spectroscopy. Besides, this phosphor also exhibits exceptional photochromic features, accompanied by a rapid body color transformation from white to brown in response to 254 nm UV light within 60 s and excellent recovery capacity upon thermal or blue/white light stimulation. The combination of UVB persistent luminescence of Bi3+ and NIR afterglow of Bi2+ coupled with reversible white-to-brown photochromism phenomenon offers one type of promising multifunctional luminescence material, showing potential to be used for optical storage and anti-counterfeiting applications.
✓ 已验证
DOI
高影响因子
FOOD CONTROL
·
2014
·
IF 2.819
Jingyue Xu,Ying Li,Jiajia Guo,Fei Shen,Yeli Luo,Chunyan Sun
A new fluorescence method for detecting clenbuterol based on gold nanoparticles (AuNPs) and rhodamine B (RB) has been developed. It has been observed that the quenching of fluorescence of RB occurs in the present of AuNPs through the fluorescence resonance energy transfer (FRET). In the presence of clenbuterol , the FRET-based fluorescence of RB and AuNPs would be gradually recovered for the reason that clenbuterol could congregate the AuNPs and inhibit the FRET process . An assay for the determination of clenbuterol has been proposed based on the modulation in FRET efficiency between RB and AuNPs. Under the optimum conditions, the fluorescence recovery efficiency of the assay is proportional to the concentration of clenbuterol. The detection limit in swine feed was calculated to be 0.008 mg/g and the recoveries were in the range of 97%–102%. In short, the proposed method provides advantages such as rapidity, simplicity, low cost and high sensitivity, making it promising for the rapid screening of clenbuterol residues.
研究领域:
分析化学
·
纳米生物技术
·
药物残留检测
·
食品安全
·
分子诊断
✓ 已验证
DOI
高影响因子
SOLID STATE SCIENCES
·
2025
·
IF 3.3
Huadong Liu,Xiaoyu Sun,Jingliang Cheng,Zhonghao Zhao,Cong Zhang
Bi 2 MoO 6 , a Bi-based semiconductor catalyst, exhibits effective degradation of organic pollutants. Nevertheless, its photocatalytic performance is constrained by several limitations, such as inadequate sunlight absorption, poor charge mobility, and fast charge carrier recombination upon photoexcitation. In this research, we successfully synthesized a Bi 2 MoO 6 composite modified with carbon quantum dots (CQDs), which demonstrates a significant improvement in photocatalytic performance. A series of characterizations and photocatalytic experiments were performed on the synthesized CQDs/Bi 2 MoO 6 samples. Degradation experiments revealed that under simulated sunlight, the CQDs/Bi 2 MoO 6 composite achieved a 95 % degradation rate for Rhodamine B (RhB) within 70 min, with a kinetic constant of 0.03994 min −1 . In comparison, the undoped Bi 2 MoO 6 sample degraded only 46 % of RhB under the same conditions, exhibiting a kinetic constant of 0.00658 min −1 . The primary reactive species, ·O 2 − and h + , were unequivocally identified through combined ESR spectroscopy and radical scavenging experiments as the drivers of pollutant degradation. Furthermore, after four consecutive reaction cycles, the catalyst maintained 90.05 % of its initial activity, confirming its high stability. In summary, this study successfully developed a CQDs-doped Bi 2 MoO 6 composite photocatalyst, offering a promising strategy for advancing photocatalysis research.
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2025
·
IF 2.6
Jia Chen,Longtao Jin,Xinyan Zhang,Qiaoqiao Shi
As an essential trace nutrient, vitamin B 12 (VB 12 ) plays a crucial role in maintaining normal metabolic processes and physiological functions in the human body, particularly in neurological development, overall growth, and energy metabolism in children. Therefore, the accurate and sensitive determination of VB 12 levels in blood is of great significance for monitoring and evaluating children's growth and developmental status. In this study, a surface-enhanced Raman scattering (SERS) aptasensor was designed for ultrasensitive detection of VB 12 in blood samples. The VB 12 aptamer was modified on the surface of Fe 3 O 4 @Au nanoparticles (Fe 3 O 4 @Au NPs) to serve as the capture probe. Meanwhile, complementary DNA (cDNA) was immobilized on the surface of gold nanoparticles (Au NPs) functionalized with the Raman reporter molecule 5,5'-dithiobis (2-nitrobenzoic acid) (DTNB), serving as the signal probe. In this sensor, the VB 12 aptamer hybridizes with the cDNA, forming a dual-layer core-satellite plasmonic nanostructure (Fe 3 O 4 @Au NPs-Apt/ Au NPs-DTNB-cDNA). Quantitative detection was achieved by measuring the SERS signal intensity of DTNB at 1033 cm -1 . Based on this design, the developed aptasensor exhibits high sensitivity toward VB 12 with a detection limit as low as 0.73 pg/mL. Furthermore, the SERS aptasensor demonstrates excellent specificity and stability when applied to the detection of VB 12 in blood samples.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Haiyan Chen,Haibo Xu,Yeyin Li,Zhibin Li,Xin Wang,Bo Jiang,Rongshun Lai,Wenbin Fan,Chuntao Xiang,Zhi Yang,Xiao Chi,Qiang Ma
Selective chlorination has been proven to be an energy-efficient and environmentally friendly method for recycling rare earth elements (REEs) from Nd-Fe-B waste. However, little attention has been paid to the in-depth study of Nd-Fe-B sludge chlorination until now. In this work, four isoconversion methods combined with an unreacted shrinkage core model were employed for the first time to investigate the kinetic behavior of the chlorination reaction between FeCl 3 and Nd-Fe-B sludge. Through thermodynamic calculations, TG-DSC, SEM-EDS, and XRD analysis, the chlorination process and phase transformation behavior of Nd-Fe-B sludge were elucidated. The results show that under optimal conditions (350 °C, FeCl 3 /RE=3:1, 2 h), the RE components in Nd-Fe-B sludge are selectively chlorinated to RECl 3 , avoiding the formation of REOCl, while the iron components primarily exist in the leaching residue as Fe 2 O 3 or FeOCl. And 97.32 % of REEs are selectively extracted into the leachate, while the iron leaching rate is only 4.02 %. Besides, the STA method is the most accurate, yielding E α-STA and A values of 75.01 kJ/mol and 2.6 × 10 6 min −1 , respectively. The reaction control mechanism was analyzed in three steps. In Step 1 (0.05 < α < 0.63) and Step 2 (0.63 < α < 0.75), the diffusion reaction mechanism controls the overall reaction, In Step 3 (0.75 < α < 0.95), the nucleation reaction takes over the control, which provides a good explanation for the change in E α-STA . However, the control step of the entire chlorination reaction is dominated by the internal diffusion process.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS
·
2026
·
IF 2.8
Xiaohua Zheng,Huilin Han,Ruomeng Zhang,Jingting Yang
Photocatalysis is a green and efficient technology for degrading organic pollutants. However, its development is restricted by the high recombination rate of photogenerated electron-hole pairs. In this study, double-Z-type BiVO 4 /AgBr/Ag 2 MoO 4 ternary photocatalysts were successfully synthesized by a one-step precipitation method at room temperature, and their photocatalytic performance for degrading rhodamine B (RhB) was investigated. The composition and microstructure of the photocatalysts were characterized by X-ray diffraction (XRD), cold field scanning electron microscopy (FE-SEM), X-ray energy dispersive spectroscopy (EDS), specific surface area testing, and X-ray photoelectron spectroscopy (XPS). The results of ultraviolet-visible diffuse reflectance spectroscopy (UV–Vis DRS), photoluminescence (PL), and electrochemical impedance spectroscopy (EIS) indicate that the optical properties of the photocatalysts are good. Under visible light irradiation, the BiVO 4 /AgBr/Ag 2 MoO 4 photocatalyst with Ag 2 MoO 4 mass fraction of 12% achieved a degradation rate > 99% within 12 min, with degradation rates 260.5, 6.1, and 161.7 times that of pure BiVO 4 , AgBr, and Ag 2 MoO 4 , respectively. In addition, holes (h + ) and superoxide radicals (·O 2− ) are the main active species, and hydroxyl radicals (·OH) also have a certain influence during the photocatalysis process, according to the active species capture experiments. This study demonstrates that the ternary photocatalyst has the potential to efficiently degrade organic pollutants under sunlight.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2026
·
IF 12.1
Bin Li,Hao Xiong,Guangying Chen,Xiaomin Guan,Jing Chen,Jian Pu,Bo Chi,Yunfeng Tian,Kaisheng Xia
The development of oxygen electrodes for reversible solid oxide cells (RSOCs) is hindered by insufficient catalytic activity, limited stability, and a mismatch in the thermal expansion coefficients (TEC) with electrolytes. Herein, we design and synthesize a novel perovskite oxide, La 0.6 Ca 0.4 Fe 0.8 Ni 0.1 Co 0.1 O 3–δ (LCFNC), using a multi-element B-site synergistic doping strategy. Systematic investigations reveal that the incorporation of Fe stabilizes the perovskite lattice, while the addition of Ni and Ca effectively suppresses the TEC (to 12.7 × 10 −6 K −1 after GDC compositing), ensuring excellent electrolyte compatibility. Furthermore, the cooperative interplay between Ni, Co, and Fe establishes ternary active centers, significantly increasing the concentration of surface oxygen vacancies. Full-cell measurements demonstrate a peak power density of 1.60 W·cm −2 at 800°C and a high electrolysis current density of 1.82 A·cm −2 at 1.3 V. Stability tests, including 100 h of constant-current electrolysis at 750°C and 24 reversible operation cycles, highlight exceptional interfacial and structural stability. More importantly, the assembled industrial-sized RSOCs (15 × 15 cm 2 ) achieve an output power of 64 W in fuel cell mode and a maximum current of 105 A in electrolyzer mode at 800°C, demonstrating its potential for practical applications. This work elucidates the mechanistic role of multi-element B-site regulation and provides an effective design principle for oxygen electrode materials that enhance activity, stability, and compatibility simultaneously, thus advancing the practical deployment of high-performance RSOCs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）