APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Cong Liu,Yanhui Li,Qian Duan
A novel hybrid organic/inorganic magnetic and thermal dual-responsive core-shell green photocatalyst zinc-tetracarboxyl-phthalocyanine- g -Fe 3 O 4 @SiO 2 @TiO 2 - g -poly( N -isopropyl acrylamide) had been prepared. Firstly, Fe 3 O 4 @SiO 2 @TiO 2 (FST) was prepared with core-shell structure, then thermosensitive poly( N -isopropylacrylamide) (PNIPAM) immobilized on the surface of 3-(methacryloxypropyl)-trimethoxysilane (MPS) modified FST by radical polymerization. Below the lower critical solution temperature (LCST), PNIPAM was hydrophilic to ensure them disperse uniformly in aqueous solution, and above LCST, PNIPAM became hydrophobic to accelerate the separation of FST from water. Secondly, zinc-tetracarboxyl-phthalocyanine (ZnTcPc) grafted on the surface of FST- g -PNIPAM by ester bonds and sensitized TiO 2 to broaden absorption light range from ultraviolet to visible region to enhance photocatalytic activity. The photocatalytic test revealed that the decomposition rate of Rhodamine B (RhB) came to 91.8% after 60 min with ZnTcPc- g -FST- g -PNIPAM under visible light. When exposed under sun light, the degradation efficiency reached to 96.9%. It meant ZnTcPc- g -FST- g -PNIPAM was more suitable for organic pollutant degradation in nature. In addition, ZnTcPc- g -FST- g -PNIPAM performed efficient synergistic effect of thermal (>LCST) and magnetic responded recovery for reusing. And the degradation rate of RhB under recyclable photocatalyst was reduced 9.6% after 4 cycles. Above all, ZnTcPc- g -FST- g -PNIPAM would be an efficient photocatalyst with magnetic and thermal dual-responsive recovery used in water treatment.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2018
·Vol. 8
·期 10
·2578-2587
·
IF 5.365
Yanzi Wang,Jing Sun,Haohai Zhang,Zhiping Zhao,Wenfang Liu
Coenzyme regeneration is important for the industrial utilization of oxidoreductase. In this work, reduced nicotinamide adenine dinucleotide (NADH) was regenerated under visible light via a photosensitizer and an electron donor. First, several photosensitizers including 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin (TCPP), zinc porphyrin (ZnTCPP) and eosin Y (EY) with varied concentrations were compared. Next, using TCPP as the photosensitizer, the type and concentration of the electron donor, pH value and concentration of the buffer system for the reaction were optimized. Following that, TCPP was immobilized onto the surface of various supports for screening. Then, the immobilization conditions were optimized and the photocatalytic performance of silica-attached TCPP was studied. Lastly, the effect of a rhodium mediator on NADH regeneration was evaluated. The results show that the optimum concentration of TCPP, ZnTCPP and EY was 2, 1 and 4 mM, respectively, and the highest NADH yield of the TCPP system was 2.37 and 1.47 times those of the ZnTCPP and EY systems. With TCPP as the photosensitizer, triethanolamine was the most efficient electron donor and its appropriate concentration was 5 mM. The optimal pH value and concentration of the phosphate buffer was 7.0 and 0.05 M. Under these conditions, a high NADH yield of 81.5% was achieved after 60 min. For the supports examined, the thiol-containing silica microspheres coated with polydopamine and polyethyleneimine had the highest loading capacity of TCPP (9.15 mg per g-support). Via sensitization, the NADH yield was 9.64% after 90 min and was upgraded to 22.5% with the addition of the rhodium mediator.
研究领域:
生物化学
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工业酶学
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产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2023
·
IF 11.1
Peng Zhang,Na Wei,Jinqiang Wu,Qingyuan Liu,Lianfeng Yang,Shixun Zu,Chunhui Liu,Yun Li,Dapeng Li,Suxiang Ge,Juntao Ma
Utilization of fly ash (FA) solid wastes as the economical carrier materials to support the high active catalysts for environmental purification would contribute to the low carbon society, resource conservation and environmental improvement. For this purpose, in-depth understanding of the surface structure dependent fly ash carriers for the high efficiency immobilization of catalyst is essential. In this study, the highly active molecule catalysts of iron tetracarboxy phthalocyanine (TCFePc) complexes were successfully supported on FA for the first time. The FA particulates were successively activated to generate the dense branch crystal surfaces for immobilizing TCFePc complexes via a simple precipitation method. The TCFePc@FA composites can activate tert-butyl hydroperoxide (BuOOH) to produce hydroxyl and alkoxy radicals along with the generation of high valent iron-oxygen species to synergistically degrade high concentration organic dyes. Significantly, the TCFePc@FA-2% (2 wt% of catalyst) exhibited obviously higher catalytic efficiency than that of pure TCFePc. The immobilization mechanism and the catalytic processes of TCFePc@FA composites were discussed in detail. Our investigation provides an efficient and economical strategy for designing FA-based catalysts in the field of environmental catalysis.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2017
·
IF 4.233
Shunkang Mei,Jianping Gao,Ye Zhang,Jiangbing Yang,Yongli Wu,Xiaoxue Wang,Ruiru Zhao,Xiangang Zhai,Chaoyue Hao,Ruixia Li,Jing Yan
Tetra (4-carboxyphenyl) porphyrin (TCPP) was loaded on the surface of Pt/g-C 3 N 4 via a simple adsorption process , and the microstructure and chemical structure of the composites were characterized by high resolution transmission electron microscopy , X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy , UV–visible diffused reflectance spectroscopy and photoluminescence spectroscopy. Loading TCPP onto Pt/g-C 3 N 4 enhanced the visible-light-driven photocatalytic evolution of H 2 from water. The TCPP/Pt/g-C 3 N 4 composite with a TCPP loading of 1 wt% had the highest photoactivity, which was 2.1 times higher than that of Pt/g-C 3 N 4 . This improvement is attributed to enhanced visible light utilization by the TCPP/Pt/g-C 3 N 4 resulting from the strong visible light response of TCPP. In addition, the formed organic heterostructure between TCPP and g-C 3 N 4 with overlapping bad gaps accelerates the electron transfer and inhibits the recombination of the photogenerated electrons and holes on g-C 3 N 4 .
研究领域:
材料科学
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能源化学
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产品关联
DOI
PubMed
高影响因子
International Journal of Electrochemical Science
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2023
·
IF 1.5
Yuxia Liu
In this work, a simple photoelectrochemical (PEC) sensor was developed using anatase TiO2 nanoparticles sensitized with iron(ffl) tetracarboxyl phthalocyanine (FeC4Pc@TiO 2 ) for detection of hydroquinone (HQ). The FeC 4 Pc@TiO 2 composite shows excellent photoelectrochemical activity under visible-light illumination compared with pure anatase TiO 2 nanoparticles and pure FeC4Pc. After adding HQ, the photocurrent of the FeC 4 Pc@TiO 2 -modified indium tin oxide electrode (FeC 4 Pc@TiO 2 /ITO) was significantly enhanced, which was attributed to the life improvement of the electron-hole pairs. The sensor was developed based on the enhanced photocurrent response signal. The photocurrent response signal is linear with the concentration of HQ ranging from 0.2 μM to 78 μM, with a detection limit of 0.078 μM (S/N=3) under the optimal conditions. The PEC sensor showed high sensitivity, low cost, and wide linearity range and was successfully employed in the analysis of real water samples, with recoveries between 99.7%-101.7%.
研究领域:
材料科学
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环境科学
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分析化学
✓ 已验证
DOI
高影响因子
DYES AND PIGMENTS
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2020
·
IF 4.613
Bingyu Xu,Zhao Wang,Weimin Zhao
Nowadays, “all–in–one” nano–agent combing various phototherapeutic effects into one nano–system has been attracted more attention in cancer therapy. Herein, a new kind of photosensitizers (PSs) aggregate is designed and constructed. Tetra (4–carboxy phenyl) porphyrin (TCPP), acted as element, is used to form a sphere–like TCPP nanoparticles (TNP) by the self–assembly process. The obtained TNP not only shows good hydrophilia, but also possesses a high photothermal conversion efficiency ( η = 31%) which the excessive energy from the excited singlet state (S n ) to the ground state (S 0 ) can be converted into heat. Moreover, TNP is served as photodynamic therapy (PDT) agent because of their components. The synergistic effect of PDT and photothermal therapy (PTT) gives TNP to superior antitumor performance under NIR laser irradiation . Meanwhile, TNP also exhibit an excellent biocompatible and safe for biomedical applications . This work provides novel insight for developing an outstanding phototherapeutic agent based on PSs aggregates to synergistically treat cancer.
研究领域:
肿瘤学
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纳米医学
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生物材料学
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产品关联
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2019
·Vol. 33
·期 5
·e4845
·
IF 3.259
Ruru Xue,Saisai Wei,Xuelin Dong,Tingyu Zhu,Jianhui Yuan,Lu Feng,Qin Wang,Yajiang Yang,Hong Wang
Meso-tetra (carbonyl phenyl) porphyrin palladium (denoted as Pd-TCPP), a typical organometallic compound, was used as phosphor and entrapped in micelle-hybridized supramolecular hydrogels. As a novel matrix material of phosphors, the hybrid system was comprised of two ordered structures: a supramolecular 3D network structure formed by the self-assembly of the gelator and the micelles formed from a Gemini surfactant. The dual-ordered structure of the system was verified by SEM, TEM and fluorescent optical microscopy. By contrast with corresponding mono-ordered structure, the room temperature phosphorescence (RTP) of Pd-TCPP was greatly enhanced by the dual-ordered structure of the system. The enhancement mechanism of RTP was studied by hydrophobicity of the system, RTP quenching and disassembly of supramolecular aggregates. Enhanced RTP could be attributed to the efficient inhibition of the non-radiative transition of Pd-TCPP by dual-ordered structures. Significantly, the RTP intensity of Pd-TCPP can be adjusted by changing the concentration of Gemini surfactants. Furthermore, deoxygenation was not required in this hybrid system in comparison with corresponding mono-component systems.
研究领域:
材料科学
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化学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Chunchun Wang,Shijie Li,Mingjie Cai,Ruyu Yan,Kexin Dong,Junlei Zhang,Yanping Liu
Constructing novel Z-scheme heterojunctions is an effective strategy for obtaining high-performance photocatalysts. Herein, tetra (4-carboxyphenyl) porphyrin (TCPP) and graphene quantum dots (GQDs) were loaded on the surface of Bi 2 MoO 6 (BMO) to fabricate novel Z-scheme heterojunctions of TCPP/G/BMO. Especially, TCPP/G/BMO-2 showed an exceptional visible-light photoactivity for tetracycline (TC) degradation (81.0%, 40 min) and Cr(VI) reduction (90.7%, 60 min), respectively by 2.38 folds and 2.96 folds enhancement compared to sole Bi 2 MoO 6 . The substantial enhancement of activity is attributed to the synergy effect of the Z-scheme charge transfer mechanism and the improved light absorption. The degradation pathways of TC were inferred by determining the generated intermediates using high performance liquid chromatography-mass spectrometry (HPLC-MS), and the toxicity of the transformation products was assessed by Toxicity Estimation Software Tool (T.E.S.T). Overall, on the basis of trapping experiments and electron spin resonance spectra (ESR) analysis, the photocatalytic mechanisms of Cr(VI) reduction and TC degradation by the TCPP/G/BMO Z-scheme heterojunction was proposed. This work indicates TCPP/G/BMO could be a promising photocatalyst for wastewater treatment.
研究领域:
环境科学
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材料科学
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光催化技术
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产品关联
DOI
PubMed
高影响因子
ELECTROANALYSIS
·
2022
·Vol. 35
·期 1
·e202100703
·
IF 3.077
Xueying Li,Xiaokun Li,Suxiang Feng
In this study, tetracarboxylic manganese phthalocyanine coated nano-zinc oxide (MnC 4 Pc-ZnO) composite material was prepared by in-situ growth method and modified with indium tin oxide (ITO) glass electrode to construct a photoelectrochemical (PEC) sensor. A PEC sensor for the determination of amlodipine besylate (AB) was developed for the first time based on the principle of precipitation reaction between heavy metal ions and dihydropyridine and the recombination suppression effect of the material. The morphology and optical properties of the MnC 4 Pc-ZnO composites were characterized by scanning electron microscopy (SEM) and ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS). Chronoamperometry (i-t) and electrochemical impedance spectroscopy (EIS) were used to study the PEC behavior of ITO electrodes modified by MnC 4 Pc-ZnO composite material. The study found that the MnC 4 Pc-ZnO composite material has a good photocurrent response to AB, and there was a good linear relationship between the concentration range of 75 nM-250 μM, the linear equation was I (μA)=−5.2×10 −8 ×lg C +3.2×10 −8 (r=0.9947), a limit of detection (LOD) of 20 nM. In addition, MnC 4 Pc-ZnO/ITO also has good selectivity and stability. The PEC sensor detects amlodipine besylate tablets, amlodipine besylate dispersible tablets, and biological samples, with standard addition recovery rates of 96.11 % and 103.96 %, respectively. The determination result has good accuracy, and the PEC sensor provides a new method for detecting AB.
研究领域:
分析化学
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材料科学
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药学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2022
·
IF 10.383
Yuxin Lin,Jingyi Chen,Yuhan Mai,Liyun Chen,Zheng Chen,Guodong Wang,Lina Deng,Peng Xu,Cai Yuan,Longguang Jiang,Mingdong Huang
Air pollution caused by bacteria and viruses has posed a serious threat to public health. Commercial air purifiers based on dense fibrous filters can remove particulate matter, including airborne pathogens, but do not kill them efficiently. Here, we developed a double-grafted antibacterial fiber material for the high-efficiency capture and inactivation of airborne microorganisms. Tetracarboxyl phthalocyanine zinc, a photosensitizer, was first grafted onto the polyester (PET) fiber, followed by coating with chitosan on the surface of PET fiber to make a double-grafted fiber material. Under the irradiation of light with a specific wavelength (680 nm), double-grafted fiber materials killed up to 99.99% of Gram-positive bacteria and Gram-negative bacteria and had a significant antibacterial effect on drug-resistant bacteria. The double-grafted PET fiber showed broad-spectrum antibacterial activities and was capable to inactivate drug-resistant bacteria. Notably, in filtration experiments for airborne bacteria, this double-grafted PET fiber demonstrated a high bacteria capture efficiency (95.68%) better than the untreated PET fiber (64.87%). Besides, the double-grafted PET fiber was capable of efficiently killing airborne bacteria. This work provides a new idea for the development of air filtration materials that can efficiently kill airborne pathogen and has good biosafety.
研究领域:
材料科学
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环境科学
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生物技术
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公共卫生
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Mohsin Pasha,Saier Liu,Minjing Shang,Min Qiu,Yuanhai Su
Photochemical transformations are mobilized by traceless photons of narrow or broad visible light wavelength and have been proven as a green and sustainable synthesis route for organic compounds. However, most of such investigations were restricted to only parametric studies, lacking in examining a synergistic involvement of actinometric, kinetics and mass transfer mechanisms on product yield. To address this vital issue, we executed the synthesis of natural product juglone via the photooxidation of 1,5-dihydroxynapthalene (DHN) mediated through singlet oxygen, which was produced by triplet–triplet energy transfer from three porphyrin-based photosensitizers to triplet oxygen upon irradiation from UV–Vis LED. Compared to the other two photosensitizers, m-TcPP ( meso -tetracarboxyphenylporphyrine) showed a higher molar extinction coefficient and remarkable energy transfer, resulting in higher DHN conversion and juglone yield. Full DHN conversion and 82% yield were obtained at the m-TcPP loading of 2.0 mol% and the residence time of 22.1 min. Actinometric investigation showed that the photon flux was significantly improved by rising m-TcPP and DHN concentrations. The maximum radiant power absorbed by the DHN photooxidation could reach 17.3% of the total input power of UV–Vis LED strip. The detailed reaction mechanism of the DHN photooxygenation was discussed through the Jablonski diagram and rate constants of intermediate steps were determined. A positive relationship between the photon flux and the apparent rate constant was found by rising m-TcPP concentration from 0.01 to 0.05 mM, while the rise in DHN concentration from 5.0 to 10.0 mM resulted in a negative correlation between these parameters. Consequently, a synergistic improvement of photon flux and apparent rate constant was necessitated to attain complete DHN conversion and high juglone yield.
研究领域:
化学工程
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光化学
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有机合成
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绿色化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xinxin Wang,Jianmin Zhou,Yanlin Zhu,Can Yu,Di Sun,Yuanfei Yao,Lili Feng,Piaoping Yang,Yang Zhou
Radiotherapy (RT) represents a cornerstone therapeutic approach in clinical practice for locally control of hepatocellular carcinoma (HCC). However, its efficacy in treating liver cancer is significantly hampered by radiation resistance, which attributed to the insufficient reactive oxygen species (ROS) generation within the tumor microenvironment (TME). To augment RT efficacy, we have developed a novel radiosensitizer termed PTFM. The compound has the features of meso -tetra (4-carboxyphenyl) porphine (TCPP) porphyrin metal–organic frameworks (MOF, PCN-224(Fe)) co-doped with high-atomic element Ta. Under X-ray excitation, the porous PTFM acts as a proficient radio-sensitization, absorbs X-ray energy to promote hydroxyl radicals generation for RT, thereby disrupting the redox balance and intensifying the cytotoxic effect on tumor cells. The incorporation of Fe 3+ into the macrocycle of TCPP within the MOFs shell, facilitates the reactions with GSH and H 2 O 2 in the TME, leads to ROS production that promotes ferroptosis and apoptosis, while also releases O 2 to alleviate tumor hypoxia. Furthermore, PTFM with thermo-metal serves as a dual-mode MR/CT imaging contrast agent, enabling precise RT monitoring and imaging guidance. In conclusion, the radiosensitizer we developed integrates dual-mode imaging capabilities and enhances RT sensitization for HCC through ROS-induced cell apoptosis and ferroptosis, thereby ameliorating tumor hypoxia.
研究领域:
肿瘤学
·
放射肿瘤学
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材料科学
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生物医学工程
·
影像科学
✓ 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）