CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Lifen Wang,Yonggang Liu,Yinjun Lin,Xueying Zhang,Yonghao Yu,Ruiqin Zhang
Enhancing the effective contact between heterogeneous interfaces and accelerating photo-generated charge separation is the focus of current photocatalysis research. Herein, a novel Z-scheme Cu 2 (OH) 3 F/Bi 2 WO 6 (CFO/BWO) heterojunctions with intimate hetero-surface contact were successfully synthesized via electronic coupling of the surface hydrogen bonds. The optimal proportion of 25%CFO/BWO displayed outstanding photocatalytic performance among the removal of tetracycline hydrochloride (TC-HCl). The excellent catalytic effect comes from the construction of the Z-Scheme heterojunction, which accelerates the separation of photogenerated carriers, and the linking of hydrogen bonds between different planes providing more charge transfer channels. Moreover, explored the main active substances in the reaction process and tested the stability of the as-prepared samples, and the charge transfer law and degradation mechanism in the Z-scheme heterojunction are discussed in detail. This work provides a new way to construct heterojunctions with more adequate hetero-surface contact and faster charge transfer capabilities.
研究领域:
材料科学
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环境科学
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化学
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DOI
高影响因子
RSC Advances
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2016
·Vol. 6
·期 97
·94976-94988
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IF 3.289
Longfei Liao,Ying Liu,Zengyong Li,Junping Zhuang,Yanbin Zhou,Size Chen
Amino modified Fe3O4@SiO2 (Fe3O4@SiO2–NH2) was used to immobilize Cu2+ and VO2+ for preparing Fe3O4@SiO2–NH2–Cu2+ and Fe3O4@SiO2–NH2–VO2+ catalysts. Various technologies had been used for the characteristics of catalysts, such as XRD, XPS, FT-IR, SEM, TEM and VSM. The catalytic performance of Fe3O4@SiO2–NH2–VO2+ in HMF oxidation could be significantly enhanced by the use of Fe3O4@SiO2–NH2–Cu2+ as the co-catalysts. The type of reaction solvents showed a great influence on the oxidation of HMF. The highest HMF conversion reached up to 98.7% at 110 °C in toluene with an optimal 2,5-diformylfuran yield of 85.5%. Moreover, the Fe3O4@SiO2–NH2–Cu2+ and Fe3O4@SiO2–NH2–VO2+ catalyst exhibited great stability and could be readily applied in the next recycle after magnetic separation.
研究领域:
化学工程
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催化材料
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Xinyu Lan,Guojun Weng,Jianjun Li,Jian Zhu,Junwu Zhao
Surface metal deposition is an important method for tuning the optical property of plasmonic nanoparticles. In this work, we tried to deposit Cu shell on the surface of gold nanorods (Au NRs) by dihydronicotinamide adenine dinucleotide (NADH)-mediated reaction. Cu 2+ were reduced to Cu 0 through the gold-catalyzed oxidization of NADH. The deposition of Cu shell onto the Au NRs surface resulted in the obvious red-shift of longitudinal localized surface plasmon resonance peak. And the red-shift of longitudinal peak increased with the concentrations of NADH and Cu 2+ . The TEM images showed that a transparent layer structure with a different contrast around Au NRs was clearly displayed. And this transparent layer structure with the low contrast was generally considered to be pure Cu shell. However, the results from energy dispersive spectrometer (EDS) and X-ray photoelectron spectroscopy (XPS) indicated that the transparent layer was not just pure Cu composition, but contained NADH/NAD + and Cu 2+ components. This grown complex dielectric shell resulted in the reduced surface enhanced Raman scattering (SERS) activity of Au NRs. Based on the decreased SERS intensity, we demonstrated a SERS method for Cu 2+ detection using R6G as Raman reporter. The decreased SERS intensity had a linear correlation with the concentration of Cu 2+ in the range of 10 −6 –10 −2 M, with a detection limit of 3.89 × 10 −6 M. This study provides new insights about Cu deposition on Au NRs, which will further promote the spectral sensing applications with gold-catalyzed Cu 2+ reduction on plasmonic nanoparticles by NADH.
研究领域:
材料科学
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分析化学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
ChemSusChem
·
2017
·Vol. 10
·期 10
·2235-2241
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IF 7.226
He Li,Jiali Jiang,Feng Wang,Jianxing Huang,Yunhui Wang,Yiyong Zhang,Jinbao Zhao
A rod-like Cu 2− x Se is synthesized by a facile water evaporation process. The electrochemical reaction mechanism is investigated by ex situ X-ray diffraction (XRD). By adopting an ether-based electrolyte instead of a carbonate-based electrolyte, the electrochemical performance of Cu 2− x Se electrodes improved significantly. The Cu 2− x Se electrodes exhibit outstanding cycle performance: after 1000 cycles, 160 mA h g −1 can be maintained with a retention of 80.3 %. At current densities of 100, 200, 500, and 1000 mA g −1 , the capacity of a Cu 2− x Se/Li battery was 208, 202, 200, and 198 mA h g −1 , respectively, showing excellent rate capability. The 4-probe conductivity measurements along with electrochemical impendence spectroscopy (EIS) and cyclic voltammetry (CV) tests illustrate that the Cu 2− x Se electrodes display high specific conductivity and impressive lithium–ion diffusion rate, which makes the Cu 2− x Se a promising anode material for lithium–ion batteries. Graphical An ideal anode : A rod-like Cu 2− x Se is synthesized by water evaporation and its electrochemical properties in lithium–ion batteries using an ether-based electrolyte are studied and presented. Ex situ XRD is also used to investigate the electrochemical reaction mechanism.
研究领域:
材料科学
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电化学
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纳米材料
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能源存储
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无机化学
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DOI
高影响因子
Environmental Science-Nano
·
2025
·
IF 5.1
Yihui He,Lin Ye,Wanglai Cen,Jianjun Li,Dengrong Sun
The effective elimination of the highly toxic phosphine (PH3) is crucial for environmental and human health. Nonetheless, developing efficient methods for the removal of PH3 and its conversion into valuable resources remains a significant challenge. Herein, we reported a novel strategy of N doping in Cu-doped active carbon (Cu-AC) to realize efficient PH3 removal. Introduction of N into Cu-AC induces strong interaction between Cu and N, which greatly promotes the dispersion of Cu species and stabilize the active Cu2+ species of PH3 removal due to the electronegativity of N. In addition, doping N also improves the basic intensity and oxidation capability, which provide high benefits for the adsorption and activation of PH3. As a result, the obtained N-doped Cu-AC (Cu-N-AC) shows exceptional performance for the oxidative removal of PH3 to generate H3PO4 at 70 °C, reaching a high breakthrough capacity of 534.5 mg·g-1, which outperforms most of the previously reported catalysts. The Cu-N-AC can be easily regenerated through water washing and air drying, showcasing its great potential for practical applications. This study not only introduces a promising material for PH3 removal, but also offers an innovative approach to design catalysts for efficient PH3 utilization, presenting an important contribution to the field of phosphorus resource recovery.
研究领域:
环境科学
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催化
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材料科学
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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
·
2017
·
IF 3.359
Nan Hu,Wei Liu,Lixue Jin,Yajie Li,Zhiqiang Li,Guimin Liu,Di Huang,Zhaoliang Wu,Hao Yin
The effective recovery of trace heavy metals from their wastewaters is an important but challenging work. Here, a promising process of nano-adsorption coupled with flotation had been validated for the recovery of trace Cu 2+ from its aqueous solution. Firstly, silica nanoparticles (SNPs) acted as an adsorbing carrier to adsorb Cu 2+ (15 mg/L). Subsequently, cetyl trimethyl ammonium bromide (CTAB) was utilized as a collector to capture SNPs. This process made it possible to combine the advantages of both nano-adsorption and flotation. Finally, the recovery efficiencies of Cu 2+ and SNP ( R SNP and R Cu ) and the volume ratio ( φ ) reached 97.1 ± 4.9%, 94.5 ± 4.7% and 23.8 ± 1.2, respectively under the suitable conditions of pH 6.0, SNP concentration 90 mg/L, CTAB concentration 35 mg/L, the adding time of CTAB 5 min and flotation column height 750 mm. By using this process, a suitable foam stability could be achieved because SNPs, apart from being an adsorbing carrier, also served as a foam stabilizer to significantly enhance the foaming stability. Furthermore, Cu 2+ was easily isolated from the recovered SNPs. Overall, this present work was highly effective for the recovery of trace Cu 2+ from its aqueous solution.
研究领域:
环境工程
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纳米技术
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水处理
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DOI
高影响因子
JOURNAL OF TRACE ELEMENTS IN MEDICINE AND BIOLOGY
·
2021
·
IF 3.849
Jianjun Guo,Xiaoliang Wang,Wenrong Wang,Lingling Jia,Wei Guo,Guohua Wu
Background Phoxim is a widely used organophosphorus pesticide in agriculture. People are paying more and more attention to its toxicity. At present, there is no appropriate way to solve the phoxim poisoning of silkworm , which severely affected the development of sericulture . Fe 2+ , Cu 2+ , Rb + exerted their biological effects through various forms in vivo . Methods To evaluate the effect of Fe 2+ /Cu 2+ /Rb + on phoxim poisoning in silkworm, Bombyx mori were treated with fresh mulberry leaves soaked in 2.5 mg/L phoxim for 2 min with 50 mg/L FeCl 2 , 150 mg/L CuCl 2 , or 0.5 mg/L RbCl from 5 days of the fifth-instar silkworm. Results Fe 2+ , Cu 2+ , and Rb + pretreatments significantly inhibited the phoxim-induced reduction of survival rate and alleviated the phoxim-induced poisoning symptoms. The protective effects of Fe 2+ , Cu 2+ , and Rb + on phoxim poisoning might be due to their enhancement of superoxide dismutase (SOD), catalase (CAT), and carboxylesterase (CarE) in the hemolymph and fat body of silkworm. This enhancement might reduce reactive oxygen species (ROS) accumulation and oxidative stress (OS) caused by phoxim poisoning. Thereby it reduced the damage to silkworm tissues and cells. Conclusions These results showed that Fe 2+ , Cu 2+ , and Rb + treatments protected the silkworm from phoxim poisoning by directly enhancing the activity of SOD, CAT, and CarE enzymes and reducing oxidative stress, but not dependent on the high expression of CYP genes. The use of Fe 2+ , Cu 2+ , and Rb + to enhance the activity of SOD, CAT, and CarE enzymes may be an underlying effective way to solve phoxim poisoning in the silkworm industry.
研究领域:
昆虫学
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毒理学
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农业
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DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2013
·
IF 4.093
Guang Lu Han,Ke Zhou,Ao Nan Lai,Qiu Gen Zhang,Ai Mei Zhu,Qing Lin Liu
As a new type of filler for mixed matrix membranes (MMMs), metal–organic frameworks (MOFs) have received increasing attention. As a kind of MOFs, [Cu 2 (bdc) 2 (bpy)] n is successfully synthesized in this work and characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), dynamic light scattering (DLS), wide angle X-ray diffraction (WAXRD), thermogravimetric analysis (TGA) and adsorption isotherms . [Cu 2 (bdc) 2 (bpy)] n is found to preferentially adsorb methanol (MeOH) over methyl tert -butyl ether (MTBE). For this reason, the [Cu 2 (bdc) 2 (bpy)] n is incorporated into sulfonated polyarylethersulfone with cardo (SPES-C) to form [Cu 2 (bdc) 2 (bpy)] n /SPES-C MMMs for the separation of MeOH/MTBE mixtures. Both the sorption selectivity and the diffusion selectivity are found to increase with the addition of [Cu 2 (bdc) 2 (bpy)] n leading to an increase in the separation factor. With increasing [Cu 2 (bdc) 2 (bpy)] n loading from 5 to 20 wt%, the flux increased up to 0.288 kg m −2 h −1 at 20 wt% loading. A threshold of [Cu 2 (bdc) 2 (bpy)] n loading is approximately 20 wt% where the flux remains almost constant regardless of further increasing the [Cu 2 (bdc) 2 (bpy)] n content. This work demonstrates an improved performance of the [Cu 2 (bdc) 2 (bpy)] n /SPES-C MMMs for the separation of MeOH/MTBE mixtures.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·Vol. 52
·期 1
·412-419
·
IF 5.6
Jian Lan,Aihua Zhou,Yi Zhang,Yuanxue Cai,Chengguo Ming
To overcome the limitations of static fluorescent anti-counterfeiting, this study proposes a dynamic encryption method based on the afterglow of materials. Through defect engineering, Cu 2+ single-doped and Cu 2+ /Al 3+ co-doped NaGaO 2 (NGO) phosphors were synthesized. The doping of Al 3+ enhances the yellow emission at 610 nm through lattice distortion and defect optimization, while effectively modulating the decay kinetics of Cu 2+ . Millisecond-level lifetime differences were achieved under same-color emission, enabling temporal information encryption. This approach breaks the conventional reliance on multi-color systems and realizes dual-dimensional encoding in both color and time, offering a high-capacity, counterfeit-resistant anti-counterfeiting strategy.
研究领域:
材料科学
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光学材料
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固态化学
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防伪技术
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光致发光
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产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2019
·
IF 2.931
Shengjie Jiang,Jiabin Qiu,Shibing Chen,Hongyu Guo,Fafu Yang
Although all kinds of sensors with unique detecting ability for one guest were reported, the fluorescence sensor with multiple detecting abilities was seldom presented. This work designed and synthesized a novel AIE fluorescence probe bearing double detecting for ATP based on Cu 2+ and Zn 2+ response of hydrazono-bis-tetraphenylethylene ( Bis-TPE ). Bis-TPE was prepared in 82% yield with simple procedure. It exhibited strong red AIE fluorescence based on the large conjugated electron effect in aqueous media. It showed outstanding selective sensing abilities for Cu 2+ by strong fluorescence quenching and for Zn 2+ by red-orange fluorescence change. The sensing mechanism of 1:1 stoichiometric ratios was confirmed by 1 H NMR and MS study. The strong red fluorescence of Bis-TPE + Cu 2+ system could be recovered by adding ATP. The orange fluorescence of Bis-TPE + Zn 2+ system could be quenched by adding Cu 2+ and then was recovered by adding ATP. These double detecting abilities for ATP with the “off-on” red fluorescence in Bis-TPE + Cu 2+ system and “allochroic-off-on” orange fluorescence in Bis-TPE + Zn 2+ +Cu 2+ system were successfully applied to test Cu 2+ , Zn 2+ and ATP in test paper and living cell imaging, displaying the good application prospects for sensing Cu 2+ , Zn 2+ and double detecting ATP in the complicated environment.
研究领域:
分析化学
·
生物化学
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材料科学
·
生物成像
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Fangman Chen,Fangnan Xiao,Weibing Zhang,Chentao Lin,Yunkun Wu
Herein, new near-infrared (NIR) luminescent ruthenium complexes were prepared for detecting Cu2+ ions. Then, ruthenium complex hybrid nanomaterials (Ru–LPMSNs) were fabricated successfully by imbedding the ruthenium complex into mesoporous silica nanoparticles. Benefiting from the novel large-pore mesoporous structure and good adsorbility of LPMSNs, Ru–LPMSN hybrid materials showed a significantly enhanced fluorescence intensity and stability. NIR fluorescence of Ru–LPMSNs was rapidly quenched by Cu2+ ions. Ru–LPMSNs also showed high Cu2+ ion selectivity and sensitivity as a sensor. The detection limit of Cu2+ ions was 10 nM with a wide linear relationship between the fluorescence intensity of Ru–LPMSNs and the concentration of Cu2+ ions. The mechanism of fluorescence quenching might be that the combination of the ruthenium complex and Cu2+ ions constrained the photoinduced electron-transfer process. Furthermore, Ru–LPMSNs dramatically increased the fluorescence signals in cells and achieved Cu2+-ion detection. Ru–LPMSNs had different tissue affinities and could monitor distribution of exogenous Cu2+ ions in vivo. Moreover, Ru–LPMSNs realized direct and rapid detection of Cu2+-ion content in serum. These results indicated the potential applications of the prepared nanomaterials as Cu2+ detection agents.
研究领域:
分析化学
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材料科学
·
生物化学
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Lingjie Hou,Jia Feng,Yubin Wang,Chuan Dong,Shaomin Shuang,Yu Wang
An efficient fluorescein based probe (H 2 L) for the dual sensing of Al 3+ and Cu 2 + has been synthesized and characterized. H 2 L was highly selective toward these two ions with different fluorescence signals and binding modes in two different media. In EtOH-H 2 O (3:2, v/v; pH 4.0), H 2 L selectively binds Al 3+ to form a 1:1 ligand/metal complex, giving rise to a visible pale pink-to-yellow color change and fluorescence enhancement at 440 nm, while in CH 3 CN-H 2 O (2:3, v/v; pH 7.2), H 2 L and Cu 2+ form a 1:2 ratio complex, resulting in a color change from pink to orange-yellow and a significant fluorescence enhancement at 520 nm. The binding modes were confirmed by fluorescence, absorption, IR, ESI-MS and 1 H NMR titrations. The detection limits were calculated to be 7.32 × 10 −8 M and 1.47 × 10 −8 M for Al 3+ and Cu 2+ , respectively. Cell imaging studies demonstrate that this sensor is capable of sensing Al 3+ and Cu 2+ in living cells.
研究领域:
分析化学
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材料科学
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生物化学
✓ 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）