CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xia Li,Weiqiang Fan,Yajie Bai,Ying Liu,Fengfeng Wang,Hongye Bai,Weidong Shi
Photoelectrochemical nitrate (NO 3 – ) reduction reaction (PEC NRR) is a promising technology to solve both environmental pollution and traditional energy crisis. However, the fabrication of efficient catalyst with controllable active sites for high selectivity is still challenging. In this work, copper phthalocyanine (C 32 H 16 CuN 8 )/cerium dioxide (CuPc/CeO 2 ) heterostructure has been designed as a model to understand the role of Ce 3+ /Ce 4+ pairs on the formation of oxygen vacancies (OVs), which helps for identifying the key factors to adjust the chemical adsorption and activation of NO 3 – in PEC NRR system. Furthermore, the unique organic–inorganic hybrid matrix significantly strengthens the relationship of solar harvest–carriers’ separation–NO 3 – reduction. CuPc/CeO 2 heterostructure exhibits a high NH 3 yield of 1.16 μmol h −1 cm −2 and Faradic efficiency of 33% (-0.6 V vs.), and the desirable PEC NRR could be well retained for 5 cycles. Therefore, the construction of CuPc/CeO 2 successfully optimizes the thermodynamic and kinetic factors in PEC NRR system, providing a new insight for organic–inorganic hybridization and NH 3 green production.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Jiashun Zhou,Haifeng Zhu,Renjie Ding,Huihua Luo,Lianqing Yu,Yaping Zhang
The core-shell structure photocatalysts have attracted extensive attention in photocatalysis due to large contact area, multiple reaction sites and high photocatalytic performance. Herein, a series of Mn 0.5 Cd 0.5 S@CuPc nano core-shell composites photocatalyst were successfully synthesized by facile solution method. The results showed that the as-prepared Mn 0.5 Cd 0.5 S photocatalyst hydrogen evolution was only 0.40 mmol/g·h, while Mn 0.5 Cd 0.5 S@CuPc composites show strong light absorption from 600 nm to 800 nm and high catalytic performance compared with pure Mn 0.5 Cd 0.5 S. Notably, the hydrogen evolution of Mn 0.5 Cd 0.5 S @CuPc-5% reached up to 2.14 mmol/(g·h), representing a remarkable 5.35 times improvement compared to the pure Mn 0.5 Cd 0.5 S when the optimal loading capacity of CuPc was set at 5%. The Mn 0.5 Cd 0.5 S@CuPc-5% exhibits excellent photocatalytic performance can be attributed to the CuPc forms a uniform molecular film on the surface of Mn 0.5 Cd 0.5 S, and the close contact between Mn 0.5 Cd 0.5 S and CuPc which can effectively promote the transfer and separation of photo-generated carriers. Moreover, the 5% Mn 0.5 Cd 0.5 S@CuPc nano core-shell composites have excellent stability, photocatalyst hydrogen activity reduce was approximately 20.1% after four runs for 12 h. This nano core-shell structure photocatalyst research offers a new strategy for constructing organic-inorganic nanocomposite photocatalysts .
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2023
·
IF 5.5
Miao Sun,Zhijie Tao,Xiao Xu,Shihao Min,Longtian Kang
The effect of Cu–N 4 , Cu–O 4 and/or –COOH sites on the electrocatalytic CO 2 reduction (ECR) activity and selectivity is rarely evaluated together and directly confirmed through the morphology and structure dependence of ECR performance. Here, the ECR performance of CuTCPP nanoparticles , nanorods , nanosheets and nanoflowers are systematically investigated. The experimental results show that their total ECR activity is nanoflowers > nanosheets > nanoparticles > nanorods. CuTCPP nanosheets with more Cu−N 4 sites exposed showed the best ethylene selectivity of 40.6 % at –1.2 V vs. RHE. CuTCPP nanoflowers with more Cu−O 4 sites were more stable than the nanosheets, showing 61.0 % methane selectivity at –1.3 V vs. RHE. A series of characterizations reveal that Cu−O 4 is mainly responsible for methane production, while Cu–N 4 is the main active site for ethylene production and its synergy with Cu–O 4 or –COOH groups can improve the ethylene selectivity.
研究领域:
材料科学
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化学工程
·
纳米技术
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产品关联
DOI
高影响因子
FIBERS AND POLYMERS
·
2023
·Vol. 24
·期 11
·3799-3808
·
IF 2.5
Peng Kexin,Guo Jiankui,Chen Haifeng,Xie Mali,Zhang Xi,Huang Xudong,Xing Guiying,Shao Linjun,Qi Chenze
In this paper, copper phthalocyanine and polystyrene composite superfine fibers were readily prepared by electrospinning technology. After treating these composite fibers with paraformaldehyde in concentrated H 2 SO 4 solution, the copper phthalocyanine molecules were covalently bonded to the polystyrene molecules. Meanwhile, the polystyrene molecules in the fibers were cross-linked to endow these fibers with excellent solvent resistance. The photocatalytic performance of this novel fibrous catalyst was evaluated by photodegradation of methyl orange in the presence of H 2 O 2 . The effects of light source, H 2 O 2 dosage, catalyst loading, and temperature on the fiber catalyzed photodegradation of methyl orange were carefully studied. The photodegradation percentage of methyl orange in aqueous solution was up to ~ 97% under optimized reaction conditions. At last, this fibrous catalyst was readily recovered by simple filtration and reused for three times with satisfied photodegradation activities. In all, we have developed a facile way to prepare copper phthalocyanine functionalized polystyrene superfine fibers with excellent photocatalytic performance.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Lu Wang,Lijuan Wang,Ziyang Cui,Yiqun Zhang
In order to achieve high sensitivity in gas-sensors based on organic field-effect transistors (OFETs), the most crucial and direct approach to enhance their sensing performance and reduce response and recovery times was through appropriate modification or improvement of the organic semiconductor (OSCs) layer, such as altering its surface morphology or structure. The micro/nano structure of spin-coated copper phthalocyanine (CuPc) films was controlled by utilizing polyvinyl alcohol ordered nanofibers (PVA ONFs). The electrical and gas-sensitive properties of CuPc/PVA ONFs films were investigated and analyzed. The CuPc/PVA ONFs film transistors exhibited improved output and transfer characteristics when the CuPc solution concentration was 75 mg/mL, with a mobility (μ) of 6.90 × 10-4 cm2/Vs. Compared with the spin-coated CuPc film transistors, the mobility increased by 74.24%. The sensors demonstrated the relative response of 12,942 % to 20 ppm NO2 gas. Additionally, it showed the response time of 1.49 min and recovery time of 2.32 min. The response rate reached up to 90 %, while the sensitivity was measured at 611 %/ppm, and the limit of detection (LOD) stood at 0.2 ppm. The research presented in this paper advances the potential applications of phthalocyanine materials within the realm of flexible and 3D-printed sensing technologies.
研究领域:
材料科学
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传感器技术
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电子工程
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2022
·Vol. 12
·期 15
·4817-4825
·
IF 6.177
Shilin Kang,Zhijun Li,Zhikun Xu,Ziqing Zhang,Jianhui Sun,Ji Bian,Linlu Bai,Yang Qu,Liqiang Jing
Although g-C3N4-based heterojunctions show promise for photocatalytic CO2 reduction, enhancing charge separation and creating sufficient catalytic sites remain challenges. In this study, mixed-valence CuPc/graphene/g-C3N4 (HT-CuPc/G/UCN) ultrathin heterojunctions (∼4.8 nm thickness) with Cu1+/Cu2+ species were constructed by H-bond induced assembly and subsequent post-treatment with H2. The optimized H100-CuPc/G/UCN sample showed 36-times higher activity than bare ultrathin g-C3N4 (UCN) for photocatalytic CO2 reduction to CO. Based on atomic force microscopy images, normalized photocurrent action spectra, electron paramagnetic resonances, and in situ diffuse reflectance infrared Fourier transform spectra, it was confirmed that the unexpected photocatalytic activity of H100-CuPc/G/UCN was attributed to the dual-functional roles of the introduced graphene: to increase the optimized amount of CuPc and enhance the high-level-energy electrons transferring from UCN to CuPc and the created Cu1+/Cu2+ species by H2 reduction as active catalytic sites for CO2 reduction. This work provides a comprehensively feasible strategy for preparing rational heterojunctions toward high-efficiency solar-driven CO2 reduction.
研究领域:
材料科学
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环境科学
·
化学
✓ 已验证
DOI
高影响因子
ChemistrySelect
·
2022
·Vol. 7
·期 33
·e202202124
·
IF 2.307
Qingqing Zhang,Zhicheng Sun,Qingwei Guo,Yang Zhou,Zhenzhen Li,Jinyue Wen,Furong Li,Yuanyuan Liu,Shouzheng Jiao
Graphical The combination of photosensitive dyes and phase change microcapsules significantly improves the efficiency of photothermal conversion. The dye converts light energy into heat, which is stored in phase-change microcapsules and released when needed. The heat storage slurry doped with copper phthalocyanine and MXene have the best photothermal conversion performance and are expected to become a novel kind of heat collecting medium. Most solar thermal utilization materials can only absorb ultraviolet irradiation rather than visible-light, limiting the photothermal conversion efficiency of corresponding devices. In this work, a functional thermal slurry system with excellent visible-light absorption and high photothermal conversion performance is developed based on the phase change microcapsules, incorporating the visible-light absorption antenna in the shell structure. Specifically, a phase change microcapsule with paraffin as the core material and silica as the wall material is prepared by the in-situ polymerization method, in which the shell layer is doped with various photosensitive molecules. The photothermal conversion efficiency of copper phthalocyanine and MXene can reach 98 % and 85.3 % respectively. The corresponding conversion efficiency could reach up to more than 80 % in a long temperature range. Therefore, the doping of photosensitive molecules with visible-light absorption can promote the solar energy conversion efficiency of these solar thermal utilization materials.
研究领域:
材料科学
·
太阳能利用
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 48
·期 3
·1254-1263
·
IF 3.3
Ziyang Cui,Lu Wang,Yangyang Zhu,Yiqun Zhang,Li Juan Wang
Here, the facile strategy of preparing filamentous copper phthalocyanine (CuPc) based gas sensors using a solution method was studied. Electrical and gas sensitive properties of filamentous CuPc films transistors were studied in detail. The filamentous CuPc films had a three-dimensional and porous structure, the gas analytes could interact more effectively with the gas sensitive layers, and the efficiency of charge carrier conversion into conductive channel increased, thus improving the sensing performance of the sensors. The relative responsivities of 75 mg mL−1 filamentous CuPc films sensors to 20 ppm NO2 gas were 32797%. The response rate was 80%. The sensitivity was 1492%/ppm. The LOD was 0.3 ppm. The successful preparation of filamentous CuPc films and their application in sensors lay a foundation for the future application of phthalocyanine materials in the field of flexible sensing.
研究领域:
材料科学
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传感器技术
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Qianlong Yang,Haifeng Zhu,Xiaomeng Ji,Yaping Zhang,Lianqing Yu
Exploration visible-light-driven photocatalyst is imperative to resolve energy crisis. Hollow structure photocatalyst has attracted increasing attention due to its large surface area can greatly facilitate light harvesting and enrich the reaction sites. Based on this, a hollow core-shelled composite photocatalyst of Zn 0.5 Cd 0.5 S and copper phthalocyanine (CuPc) was synthesized by facile solution method. Under visible-light irradiation (λ > 400 nm), the as-prepared CuPc/Zn 0.5 Cd 0.5 S photocatalyst exhibits eminent hydrogen evolution up to 29.16 mmol/g·h without noble metal co-catalyst modification, which was 3.5 times higher than pristine hollow Zn 0.5 Cd 0.5 S nanoflower (8.42 mmol/g·h). Meanwhile, the lifetime of photo-carriers prolongs from 0.765 s (Zn 0.5 Cd 0.5 S) to 1.05 s (CuPc/Zn 0.5 Cd 0.5 S-4%) based on open-circuit potential calculation, and the apparent quantum yield reaches 6.95% at 400 nm wavelength. In addition, the photocorrosion of Zn 0.5 Cd 0.5 S phase dissolution is greatly restrained, ascribing to p-type CuPc with merits of fast holes transfer and high chemical stability. These results indicate that CuPc/Zn 0.5 Cd 0.5 S heterojunction possesses excellent visible-light absorption capacity and superior photocatalytic hydrogen evolution property. This study presents new insights for designing core-shelled hollow photocatalyst based on organic-inorganic nanoarchitectonics, which displays countless potential for future green energy harvesting.
研究领域:
材料科学
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能源化学
✓ 已验证
DOI
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2018
·Vol. 42
·期 5
·1037-1044
·
IF 2.415
Wenjuan Zhang,Liyan Jiang,Li Fu,Qiong Jia
Efficient separation and enrichment of low-abundance glycopeptides from complex biological samples is the key to the discovery of disease biomarkers. In this work, a new material was prepared by coating copper tetra(N-carbonylacrylic) aminephthalocyanine and iminodiacetic acid onto poly(glycidyl methacrylate-pentaerythritol triacrylate) monolith. The monolith was applied to polymer monolithic microextraction for specific capture of glycopeptides coupled with matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. The developed monolith exhibited satisfactory efficiency for glycopeptide enrichment with high selectivity and detection sensitivity. When the tryptic digest of immunoglobulin G was used as the sample, total 24 glycopeptides were identified and the detection limit was determined as 5 fmol. When the approach was applied to the analysis of glycopeptides in the mixture of bovine serum albumin and immunoglobulin G (100:1, m / m ) digests, 16 glycopeptides could still be observed. Moreover, the monolith was successfully applied to the selective enrichment of glycopeptides from human serum digests, exhibiting great practicability in identifying low-abundance glycopeptides in complex biological samples.
研究领域:
分析化学
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蛋白质组学
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生物医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2019
·Vol. 166
·期 8
·B654
·
IF 3.12
Ya-Mu Xia,Wen Zhang,Meng-Ying Li,Meng Xia,Li-Jia Zou,Wei-Wei Gao
In this paper, a highly effective electrochemical sensor based on graphene (Gr)/copper phthalocyanine (CuPc) nanocomposites was successfully designed and achieved. The morphology of Gr/CuPc nanocomposites was characterized by UV-vis, IR, Raman spectra and scanning electron microscopy (SEM). Gr/CuPc nanocomposites were gathered on the surface of the glassy carbon electrode (GCE), and the performence of Gr/CuPc/GCE toward chloramphenicol (CAP) and florfenicol (FF) was investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The Gr/CuPc/GCE presented good electrochemical properties, stability, reproducibility, excellent anti-interference ability and satisfying recovery rate in real samples for the detection of CAP and FF. The performance of Gr/CuPc/GCE exhibited a linear ranging from 1.0 × 10−7 to 2.0 × 10−5 M with a detection limit of 2.7 × 10−8 M (−0.652 V vs. Hg/Hg2Cl2, S/N = 3) toward CAP. For FF, it exhibited a linear ranging from 1.0 × 10−6 to 3.0 × 10−5 M with a detection limit of 7.5 × 10−7 M (−0.863 V vs. Hg/Hg2Cl2, S/N = 3). Furthermore, it is for the first time that FF is determined by electrochemical sensor through nanocomposites modified electrode. This proposed electrochemical sensor can provide an opportunity for convenient and reliable determination of CAP or FF.
研究领域:
分析化学
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2024
·Vol. 25
·期 12
·6713
·
IF 4.9
Jihong Wang,Zhening Fang,Wenhao Liu,Liuyuan Zhu,Qiubo Pan,Zhen Gu,Huifeng Wang,Yingying Huang,Haiping Fang
Self-powered wearable pressure sensors based on flexible electronics have emerged as a new trend due to the increasing demand for intelligent and portable devices. Improvements in pressure-sensing performance, including in the output voltage, sensitivity and response time, can greatly expand their related applications; however, this remains challenging. Here, we report on a highly sensitive piezoelectric sensor with novel light-boosting pressure-sensing performance, based on a composite membrane of copper phthalocyanine (CuPC) and graphene oxide (GO) (CuPC@GO). Under light illumination, the CuPC@GO piezoelectric sensor demonstrates a remarkable increase in output voltage (381.17 mV, 50 kPa) and sensitivity (116.80 mV/kPa, <5 kPa), which are approximately twice and three times of that the sensor without light illumination, respectively. Furthermore, light exposure significantly improves the response speed of the sensor with a response time of 38.04 µs and recovery time of 58.48 µs, while maintaining excellent mechanical stability even after 2000 cycles. Density functional theory calculations reveal that increased electron transfer from graphene to CuPC can occur when the CuPC is in the excited state, which indicates that the light illumination promotes the electron excitation of CuPC, and thus brings about the high polarization of the sensor. Importantly, these sensors exhibit universal spatial non-contact adjustability, highlighting their versatility and applicability in various settings.
研究领域:
材料科学
·
传感器技术
·
电子工程
✓ 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）