Impact of different TiO 2 samples and porphyrin substituents on the photocatalytic performance of TiO 2 @copper porphyrin composites

Lü, Xiang‐fei; Qian, Hui; Mele, Giuseppe; Riccardis, Alberto De; Zhao, Ran; Chen, Jie; Wu, Hao; Hu, Nanjiang

doi:10.1016/j.cattod.2016.04.027

Cited by 25 publications

(10 citation statements)

References 21 publications

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“…Moreover, chlorophyllin is inexpensive, non-toxic, and durable. Many recent studies have focused on utilization of metal porphyrin as a novel sensitizer over different catalytic materials (Gong et al 2012;Vebber et al 2016;Joshi et al 2009;Lüa et al 2017;Phongamwong et al 2017;Sun et al 2013;Krishnakumar et al 2017). Gong et al (2012) combined sodium and iron chlorophyllin with W and N co-doped TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

“…It was proved that photocatalytic activity of chlorophyll-based material indicates that chlorophyll acts as a reaction center, which absorbs visible light and generates electron, which is transferred to different electron acceptors reducing MO. The preparation and comparison of the photocatalytic activity of novel TiO 2 /copper porphyrin hybrids were the subject of a report by Lüa et al (2017). The materials were obtained by impregnation of 5-(4-hydroxy)phenyl-10,15,20-triphenyl copper porphyrin, 5-(4-ethylacetatatomethoxy)-phenyl-10,15,20-triphenyl-copper porphyrin and 5-(4-carboxylato-methoxy)phenyl-10,15,20-triphenyl copper porphyrin onto the surface of different TiO 2 samples: commercial (cTiO 2 ) and self-prepared (pTiO 2 ).…”

Section: Introductionmentioning

confidence: 99%

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Functional titania–silica/chlorophyllin hybrids: design, fabrication, comprehensive physicochemical characteristic and photocatalytic test

et al. 2019

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Chlorophyllin (which was used as sensitizer) was adsorbed onto a synthetic titania-silica oxide system, prepared via a sol-gel method. It was investigated how the adsorption process was affected by the initial concentration of chlorophyllin and the contact time of the solution. The physicochemical and structural properties of the inorganic support were comprehensively analyzed, including determination of the dispersive properties and morphology of the material (particle size distribution, SEM image), crystalline structure (XRD), chemical composition (EDS), parameters of the porous structure (low-temperature N 2 sorption) and thermal stability (TGA/DTA). The effectiveness of chlorophyllin adsorption on TiO 2 -SiO 2 was examined by Fourier transform infrared spectroscopy. The degree of coverage of the inorganic support with chlorophyllin was calculated from the Berendsen and de Golan equation based on BET and elemental analysis results. The kinetics of the adsorption of chlorophyllin onto the synthetic titania-silica oxide system were also determined. The experimental data correspond directly to a pseudo-second-order model. Moreover, the photocatalytic activity of selected TiO 2 -SiO 2 /chlorophyllin hybrids with respect to the decomposition of C.I. Basic Violet 10 dye was investigated. It was found that the titania-silica hybrids conjugated with chlorophyllin exhibited higher photocatalytic activity in the degradation of C.I. Basic Violet 10 than the pure TiO 2 -SiO 2 material. Moreover, the kinetics of the photocatalytic degradation of selected organic compound was determined based on the Langmuir-Hinshelwood equation, assuming the pseudo-first-order reaction.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Functional titania–silica/chlorophyllin hybrids: design, fabrication, comprehensive physicochemical characteristic and photocatalytic test

et al. 2019

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“…TiO 2 is the most extensively used photocatalyst due to its easy availability, strong oxidizing ability, and superior photoelectronic properties [ 63 , 64 ]. With a wide band gap (~3.2 eV), TiO 2 could only be excited under UV light, which limits efficient utilization of solar light [ 65 ].…”

Section: The Photocatalytic Application Of Fullerene/semiconductormentioning

confidence: 99%

Recent Progress on Fullerene-Based Materials: Synthesis, Properties, Modifications, and Photocatalytic Applications

et al. 2020

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Solar light is an inexpensive energy source making up for energy shortage and solving serious environmental problems. For efficient utilization of solar energy, photocatalytic materials have attracted extensive attention over the last decades. As zero-dimensional carbon nanomaterials, fullerenes (C60, C70, etc.) have been extensively investigated for photocatalytic applications. Due to their unique properties, fullerenes can be used with other semiconductors as photocatalyst enhancers, and also as novel photocatalysts after being dispersed on non-semiconductors. This review summarizes fullerene-based materials (including fullerene/semiconductors and fullerene/non-semiconductors) for photocatalytic applications, such as water splitting, Cr (VI) reduction, pollutant degradation and bacterial disinfection. Firstly, the optical and electronic properties of fullerene are presented. Then, recent advances in the synthesis and photocatalytic mechanisms of fullerene-based photocatalysts are summarized. Furthermore, the effective performances of fullerene-based photocatalysts are discussed, mainly concerning photocatalytic H2 generation and pollutant removal. Finally, the current challenges and prospects of fullerene-based photocatalysts are proposed. It is expected that this review could bring a better understanding of fullerene-based photocatalysts for water treatment and environmental protection.

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“…This single‐step, motor‐based miRNA sensing approach enabled rapid “on the move” and specific detection of the target miRNA‐21, even in single cells with an extremely low endogenous miRNA‐21 level. Moreover, the nucleic acid functionalized AuNPs and GO composite probe could also be used to realize recognition and in situ monitoring of precytoplasmic target miRNA and mature miRNA in living cells …”

Section: State‐of‐the‐art Protocols For High‐quality Mirna Detectionmentioning

confidence: 99%

Progress in miRNA Detection Using Graphene Material–Based Biosensors

Zhang

Miao

Sun

et al. 2019

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MicroRNAs (miRNAs) are short, endogenous, noncoding RNAs that play critical roles in physiologic and pathologic processes and are vital biomarkers for several disease diagnostics and therapeutics. Therefore, rapid, low‐cost, sensitive, and selective detection of miRNAs is of paramount importance and has aroused increasing attention in the field of medical research. Among the various reported miRNA sensors, devices based on graphene and its derivatives, which form functional supramolecular nanoassemblies of π‐conjugated molecules, have been revealed to have great potential due to their extraordinary electrical, chemical, optical, mechanical, and structural properties. This Review critically and comprehensively summarizes the recent progress in miRNA detection based on graphene and its derivative materials, with an emphasis on i) the underlying working principles of these types of sensors, and the unique roles and advantages of graphene materials; ii) state‐of‐the‐art protocols recently developed for high‐performance miRNA sensing, including representative examples; and iii) perspectives and current challenges for graphene sensors. This Review intends to provide readers with a deep understanding of the design and future of miRNA detection devices.

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Impact of different TiO 2 samples and porphyrin substituents on the photocatalytic performance of TiO 2 @copper porphyrin composites

Cited by 25 publications

References 21 publications

Functional titania–silica/chlorophyllin hybrids: design, fabrication, comprehensive physicochemical characteristic and photocatalytic test

Functional titania–silica/chlorophyllin hybrids: design, fabrication, comprehensive physicochemical characteristic and photocatalytic test

Recent Progress on Fullerene-Based Materials: Synthesis, Properties, Modifications, and Photocatalytic Applications

Progress in miRNA Detection Using Graphene Material–Based Biosensors

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