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Zang S, Cai X, Chen M, Teng D, Jing F, Leng Z, Zhou Y, Lin F. Tunable Carrier Transfer of Polymeric Carbon Nitride with Charge-Conducting CoV2O6∙2H2O for Photocatalytic O2 Evolution. NANOMATERIALS 2022; 12:nano12111931. [PMID: 35683786 PMCID: PMC9182530 DOI: 10.3390/nano12111931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 05/23/2022] [Accepted: 06/02/2022] [Indexed: 02/07/2023]
Abstract
Photocatalytic water splitting is one of the promising approaches to solving environmental problems and energy crises. However, the sluggish 4e− transfer kinetics in water oxidation half-reaction restricts the 2e− reduction efficiency in photocatalytic water splitting. Herein, cobalt vanadate-decorated polymeric carbon nitride (named CoVO/PCN) was constructed to mediate the carrier kinetic process in a photocatalytic water oxidation reaction (WOR). The photocatalysts were well-characterized by various physicochemical techniques such as XRD, FT-IR, TEM, and XPS. Under UV and visible light irradiation, the O2 evolution rate of optimized 3 wt% CoVO/PCN reached 467 and 200 μmol h−1 g−1, which were about 6.5 and 5.9 times higher than that of PCN, respectively. Electrochemical tests and PL results reveal that the recombination of photogenerated carriers on PCN is effectively suppressed and the kinetics of WOR is significantly enhanced after CoVO introduction. This work highlights key features of the tuning carrier kinetics of PCN using charge-conducting materials, which should be the basis for the further development of photocatalytic O2 reactions.
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Affiliation(s)
- Shaohong Zang
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
| | - Xiaorong Cai
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
| | - Mengshan Chen
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
| | - Dehong Teng
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
| | - Fei Jing
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
| | - Zhe Leng
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
- Correspondence: (Z.L.); (F.L.); Tel.: +86-0580-2262589 (Z.L.)
| | - Yingtang Zhou
- Institute of Innovation & Application, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, China; (S.Z.); (X.C.); (M.C.); (D.T.); (F.J.); (Y.Z.)
| | - Feng Lin
- College of Chemical and Materials Engineering, Quzhou University, Quzhou 324000, China
- Correspondence: (Z.L.); (F.L.); Tel.: +86-0580-2262589 (Z.L.)
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Riva L, Fiorati A, Sganappa A, Melone L, Punta C, Cametti M. Naked-Eye Heterogeneous Sensing of Fluoride Ions by Co-Polymeric Nanosponge Systems Comprising Aromatic-Imide-Functionalized Nanocellulose and Branched Polyethyleneimine. Chempluschem 2019; 84:1512-1518. [PMID: 31943927 DOI: 10.1002/cplu.201900348] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 08/08/2019] [Indexed: 12/24/2022]
Abstract
Heterogeneous colorimetric sensors for fluoride ions were obtained by cross-linking TEMPO-oxidized cellulose nanofibers (TOCNF) with chemically modified branched polyethyleneimine 25 kDa (bPEI). Functionalization of bPEI primary amino groups with aromatic anhydrides led to the formation of the corresponding mono- and bis-imides on the grafted polymers (f-bPEI). A microwave-assisted procedure allowed the optimization of the synthetic protocol by reducing reaction time from 17 h to 30 minutes. Hydrogels obtained by mixing different ratios of TOCNF, bPEI and f-bPEI were lyophilized and thermally treated at about 100 °C to promote the formation of amide bonds between the amino groups of poly-cationic polymers and the carboxylic groups of cellulose nanofibers. This approach generated a series of cellulose nanosponges S1-S3 which were characterized by FT-IR and by solid state 13 C CPMAS NMR. These sponge materials can act as colorimetric sensors for the selective naked-eye recognition of fluoride ions over chloride, phosphate and acetate ions at concentrations of up to 0.05 M in DMSO. Moreover, when the sponges were functionalized with perylene tetracarboxylic diimide, successful naked-eye detection was achieved with only 0.02 % w/w of chromophore units per gram of material.
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Affiliation(s)
- Laura Riva
- Department of Chemistry Materials and Chemical Engineering, "Giulio Natta" Politecnico di Milano, Via Luigi Mancinelli 7, 20131, Milano, Italia
| | - Andrea Fiorati
- Department of Chemistry Materials and Chemical Engineering, "Giulio Natta" Politecnico di Milano, Via Luigi Mancinelli 7, 20131, Milano, Italia
| | - Aurora Sganappa
- Department of Chemistry Materials and Chemical Engineering, "Giulio Natta" Politecnico di Milano, Via Luigi Mancinelli 7, 20131, Milano, Italia
| | - Lucio Melone
- Department of Chemistry Materials and Chemical Engineering, "Giulio Natta" Politecnico di Milano, Via Luigi Mancinelli 7, 20131, Milano, Italia.,Università Telematica e-Campus, Via Isimbardi 10, 22060, Novedrate, Como, Italia
| | - Carlo Punta
- Department of Chemistry Materials and Chemical Engineering, "Giulio Natta" Politecnico di Milano, Via Luigi Mancinelli 7, 20131, Milano, Italia
| | - Massimo Cametti
- Department of Chemistry Materials and Chemical Engineering, "Giulio Natta" Politecnico di Milano, Via Luigi Mancinelli 7, 20131, Milano, Italia
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Maruyama T, Kikukawa Y, Sakiyama H, Katayama M, Inada Y, Hayashi Y. A highly-flexible cyclic-decavanadate ligand for interconversion of dinuclear- and trinuclear-cobalt(ii) and manganese(ii) cores. RSC Adv 2017. [DOI: 10.1039/c7ra05941h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
The conformation of a cyclic-decavanadate ligand was reversibly transformed in response to the nuclearity of the central metal core.
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Affiliation(s)
- Tatsuya Maruyama
- Department of Chemistry
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Yuji Kikukawa
- Department of Chemistry
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
| | - Hiroshi Sakiyama
- Department of Science
- Faculty of Science
- Yamagata University
- Yamagata 990-8560
- Japan
| | - Misaki Katayama
- Department of Applied Chemistry
- Graduate School of Life Sciences
- Ritsumeikan University
- Kusatsu 525-8577
- Japan
| | - Yasuhiro Inada
- Department of Applied Chemistry
- Graduate School of Life Sciences
- Ritsumeikan University
- Kusatsu 525-8577
- Japan
| | - Yoshihito Hayashi
- Department of Chemistry
- Graduate School of Natural Science and Technology
- Kanazawa University
- Kanazawa 920-1192
- Japan
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