Self-photodegradation of formaldehyde under visible-light by solid wood modified via nanostructured Fe-doped WO3 accompanied with superior dimensional stability

Sheng, Chengmin; Wang, Chao; Wang, Hanwei; Jin, Chunde; Zhang, Jiayi; Li, Song

doi:10.1016/j.jhazmat.2017.01.018

Cited by 50 publications

(18 citation statements)

References 38 publications

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“…The absorption peak at 1639 cm −1 was assigned to the bending vibration of water absorption and to the C=O stretching vibration of the amide group [ 24 ]. The stretching vibration of the aromatic ring skeleton at 1513 cm −1 corresponded to the characteristic peak of lignin [ 25 ]. The absorption band at 1267 cm −1 was ascribed to the C–O stretching vibration of the ester and to the C–N stretching vibration [ 26 ].…”

Section: Resultsmentioning

confidence: 99%

Fabrication of a Nano-ZnO/Polyethylene/Wood-Fiber Composite with Enhanced Microwave Absorption and Photocatalytic Activity via a Facile Hot-Press Method

et al. 2017

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A polyethylene/wood-fiber composite loaded with nano-ZnO was prepared by a facile hot-press method and was used for the photocatalytic degradation of organic compounds as well as for microwave absorption. ZnO nanoparticles with an average size of 29 nm and polyethylene (PE) powders were dispersed on the wood fibers’ surface through a viscous cationic polyacrylamide (CPAM) solution. The reflection loss (RL) value of the resulting composite was −21 dB, with a thickness of 3.5 mm in the frequency of 17.17 GHz. The PE/ZnO/wood-fiber (PZW) composite exhibited superior photocatalytic activity (84% methyl orange degradation within 300 min) under UV light irradiation. ZnO nanoparticels (NPs) increased the storage modulus of the PZW composite, and the damping factor was transferred to the higher temperature region. The PZW composite exhibited the maximum flexural strength of 58 MPa and a modulus of elasticity (MOE) of 9625 MPa. Meanwhile, it also displayed dimensional stability (thickness swelling value of 9%).

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Section: Resultsmentioning

confidence: 99%

Fabrication of a Nano-ZnO/Polyethylene/Wood-Fiber Composite with Enhanced Microwave Absorption and Photocatalytic Activity via a Facile Hot-Press Method

et al. 2017

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“…The absorption peak at 1508 cm −1 was corresponded to the skeletal vibration of the aromatic ring, which derived from lignin [ 19 ]. The bands at 1260 and 1060 cm −1 were assigned to C–O–C (aryl-alkyl ether linkage) stretching vibration and C–O (alkoxy) stretching vibration, respectively [ 24 ]. The absorption peak at 561 cm −1 was attributed to Fe–O stretching vibration [ 25 , 26 ], which confirmed that the Fe 3 O 4 NPs were mixed in the fiber.…”

Section: Resultsmentioning

confidence: 99%

“…The peak at 1515 cm −1 corresponded to the skeletal vibration of the aromatic ring, which derived from lignin [ 19 ]. The bands at 1268 and 1060 cm −1 were ascribed to the C–O–C (aryl-alkyl ether linkage) stretching vibration and C–O (alkoxy) stretching vibration, respectively [ 24 , 37 ]. As the concentration of Fe 3 O 4 increased, the transmittance of these characteristic peaks did not change.…”

Section: Resultsmentioning

confidence: 99%

Preparation of High Mechanical Performance Nano-Fe3O4/Wood Fiber Binderless Composite Boards for Electromagnetic Absorption via a Facile and Green Method

et al. 2018

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Fe3O4/wood fiber composites are prepared with a green mechanical method using only distilled water as a solvent without any chemical agents, and then a binderless composite board with high mechanical properties is obtained via a hot-press for electromagnetic (EM) absorption. The fibers are connected by hydrogen bonds after being mechanically pretreated, and Fe3O4 nanoparticles (NPs) are attached to the fiber surface through physical adsorption. The composite board is bonded by an adhesive, which is provided by the reaction of fiber composition under high temperature and pressure. The Nano-Fe3O4/Fiber (NFF) binderless composite board shows remarkable microwave absorption properties and high mechanical strength. The optional reflection loss (RL) of the as-prepared binderless composite board is −31.90 dB. The bending strength of the NFF binderless composite board is 36.36 MPa with the addition of 6% nano-Fe3O4, the modulus of elasticity (MOE) is 6842.16 MPa, and the internal bond (IB) strength is 0.81 MPa. These results demonstrate that magnetic nanoparticles are deposited in binderless composite board by hot pressing, which is the easiest way to produce high mechanical strength and EM absorbers.

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“…The results indicate that synthesized TiO2 NTs are very stable under the employed reaction conditions. Based on previously published reports, HCHO was adsorbed onto the surface of TiO2 NTs [7,69,70]. In the below reaction pathway, it is possible that each oxidation step may proceed on the photocatalyst surface either by direct reaction of the adsorbed organic molecules with valence band holes (hVB) or by an indirect reaction path through hydroxyl radical attack [30].…”

Section: Photocatalytic Activitymentioning

confidence: 99%

Visible Light Photodegradation of Formaldehyde over TiO2 Nanotubes Synthesized via Electrochemical Anodization of Titanium Foil

et al. 2020

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In this study, a series of TiO2 nanotubes (NTs) were synthesized employing electrochemical anodization of titanium foil in an ionic liquid solution containing a mixture of glycerol and choline chloride, acting as electrolyte. The as-synthesized TiO2 NTs were calcined at 350, 450, or 550 °C for a 2 h duration to investigate the influence of calcination temperature on NTs formation, morphology, surface properties, crystallinity, and subsequent photocatalytic activity for visible light photodegradation of gaseous formaldehyde (HCHO). Results showed that the calcination temperature has a significant effect on the structure and coverage of TiO2 NTs on the surface. Freshly synthesized TiO2 NTs showed better-ordered structure compared to calcined samples. There was significant pore rupture with increasing calcination temperature. The transformation from anatase to rutile phase appeared after calcination at 450 °C and the weight fraction of the rutile phase increased from 19% to 36% upon increasing the calcination temperature to 550 °C. The band gaps of the TiO2 NTs were in the range from 2.80 to 2.74 eV, shifting the active region of the materials to visible light. The presence of mixed anatase–rutile TiO2 phases in the sample calcined at 450 °C showed enhanced photoactivity, which was confirmed by the 21.56 mg∙L−1∙g−1 removal of gaseous formaldehyde under 120 min of visible light irradiation and displayed enhanced quantum yield, ∅HCHO of 17%.

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Self-photodegradation of formaldehyde under visible-light by solid wood modified via nanostructured Fe-doped WO3 accompanied with superior dimensional stability

Cited by 50 publications

References 38 publications

Fabrication of a Nano-ZnO/Polyethylene/Wood-Fiber Composite with Enhanced Microwave Absorption and Photocatalytic Activity via a Facile Hot-Press Method

Fabrication of a Nano-ZnO/Polyethylene/Wood-Fiber Composite with Enhanced Microwave Absorption and Photocatalytic Activity via a Facile Hot-Press Method

Preparation of High Mechanical Performance Nano-Fe3O4/Wood Fiber Binderless Composite Boards for Electromagnetic Absorption via a Facile and Green Method

Visible Light Photodegradation of Formaldehyde over TiO2 Nanotubes Synthesized via Electrochemical Anodization of Titanium Foil

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