Growth of Ag/g-C3N4 nanocomposites on nickel foam to enhance photocatalytic degradation of formaldehyde under visible light

Wang, Ze; Zhi, Huang; Yu, Junsheng; Shao, Xi; Peng, Weidong; Yu, Jie; Jiang, Yinying

doi:10.1016/j.jes.2023.02.003

Cited by 14 publications

(2 citation statements)

References 34 publications

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“…However, photocatalytic technology also has some disadvantages such as low adsorption capacity, low utilization e ciency of visible light, and harmful by-products (Haghighi and Haghighat, 2024). Therefore, these existing remediation techniques are still defective when they are used to deal with low level formaldehyde pollution in indoor environments (Wang et al, 2024).…”

Section: Introductionmentioning

confidence: 99%

Formaldehyde dissipation mechanism of active alginate gel and its application in deep air purification

Lu,

Yin,

Gao

et al. 2024

Preprint

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It is very important to purify low level formaldehyde pollution in indoor air by an efficient and low-cost material. In this research, an environmentally friendly material (names as ACA) was prepared by fixing the active component in cactus stem with the three-dimensional network structure of calcium alginate gel. It was observed by a scanning electron microscopy that plant active substances were dispersed and embedded in the three-dimensional network structure gaps of calcium alginate. The large surface area and strong hydrophilicity of the calcium alginate gel indicate a strong ability to capture low level formaldehyde in the airflow, while there is a rapid degradation ability of plant active substances to formaldehyde fix by gel. The prepared material was found an efficient and deep removal ability to formaldehyde in airflow. Results showed that removal rate reached to 88.64 ~ 91.57% at the airflow residence time of 0.13 s and the formaldehyde level in unpurified airflow in the range of 0.081 ~ 0.328 mg·m-3, and the formaldehyde level in purified airflow can below 0.02 mg·m-3. After continuously working for 63 hours, the removal rate was still 64.74 ~ 73.56%, and the formaldehyde level in purified airflow was 0.04 ~ 0.08 mg·m-3. The removal efficiency of ACA-cactus to formaldehyde in airflow was up to 1387.66 mg·h-1·kg-1 (dry weight of gel), and the corresponding maximum airflow purification capacity was 6000 m3·h-1·kg-1. Similar to a bioreactor, enzymatic mild oxidation of plant active components plays a dominant role in the removal of formaldehyde by ACA. This research provides a new idea for the deep purification of formaldehyde in the air and has a huge application potential.

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Section: Introductionmentioning

confidence: 99%

Formaldehyde dissipation mechanism of active alginate gel and its application in deep air purification

Lu,

Yin,

Gao

et al. 2024

Preprint

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“…That is because of its diverse household uses in addition to its assorted uses in several industries [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ]. CH 2 O gas has a pungent smell and no color [ 9 ]. Exposure to CH 2 O gas can cause voluminous hazards or even death to humans [ 10 , 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

M-Encapsulated Be12O12 Nano-Cage (M = K, Mn, or Cu) for CH2O Sensing Applications: A Theoretical Study

Al-Nadary,

Eid,

Badran

et al. 2023

Nanomaterials

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DFT and TD-DFT studies of B3LYP/6–31 g(d,p) with the D2 version of Grimme’s dispersion are used to examine the adsorption of a CH2O molecule on Be12O12 and MBe12O12 nano-cages (M = K, Mn, or Cu atom). The energy gap for Be12O12 was 8.210 eV, while the M encapsulation decreased its value to 0.685–1.568 eV, whereas the adsorption of the CH2O gas decreased the Eg values for Be12O12 and CuBe12O12 to 4.983 and 0.876 eV and increased its values for KBe12O12 and MnBe12O12 to 1.286 and 1.516 eV, respectively. The M encapsulation enhanced the chemical adsorption of CH2O gas with the surface of Be12O12. The UV-vis spectrum of the Be12O12 nano-cage was dramatically affected by the M encapsulation as well as the adsorption of the CH2O gas. In addition, the adsorption energies and the electrical sensitivity of the Be12O12 as well as the MBe12O12 nano-cages to CH2O gas could be manipulated with an external electric field. Our results may be fruitful for utilizing Be12O12 as well as MBe12O12 nano-cages as candidate materials for removing and sensing formaldehyde gas.

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Silica wastes derived multifunctional coatings for formaldehyde photodegradation and autonomous indoor humidity buffering

Lin,

Zheng,

Liu

2023

Chemosphere

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Growth of Ag/g-C3N4 nanocomposites on nickel foam to enhance photocatalytic degradation of formaldehyde under visible light

Cited by 14 publications

References 34 publications

Formaldehyde dissipation mechanism of active alginate gel and its application in deep air purification

Formaldehyde dissipation mechanism of active alginate gel and its application in deep air purification

M-Encapsulated Be12O12 Nano-Cage (M = K, Mn, or Cu) for CH2O Sensing Applications: A Theoretical Study

Silica wastes derived multifunctional coatings for formaldehyde photodegradation and autonomous indoor humidity buffering

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