A systematic review of intermediates and their characterization methods in VOCs degradation by different catalytic technologies

Zhao, Zhenyuan; Ma, Shuting; Gao, Bin; Bi, Fukun; Qiao, Rong; Yang, Yang; Wu, Minghong; Zhang, Xiaodong

doi:10.1016/j.seppur.2023.123510

Cited by 76 publications

(15 citation statements)

References 144 publications

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“…The peak at 3440 cm –1 was ascribed to the −OH stretching vibration, while the peaks at 2930 and 2855 cm –1 were attributed to the antisymmetric and symmetric stretching vibrations of C–H . The peaks at 1628, 1210, and 650 cm –1 were regarded as the stretching vibration of CO, , the stretching vibration band of C–O–C, and the vibration of aromatic C–H, respectively. , When CSs were assembled inside HCS, oxygen-containing functional groups in CS were introduced into HCS, and the intensities of CO and C–O–C peaks in C 0.1 @HCS were obviously promoted.…”

Section: Resultsmentioning

confidence: 99%

“…At the same time, the air pollution evaluation index of SO 2 was replaced by VOCs in the 14th Five-Year Plan (2021–2025) for National Economic and Social Development and Vision 2035 of the People’s Republic of China. Therefore, a lot of VOCs control technologies such as thermal oxidization, catalytic oxidization, , absorption, − condensation, , and adsorption , were developed. Currently, the adsorption technology is reported as the most promising VOCs control technology due to its low operation cost, convenient operation, and high removal efficiency. , …”

Section: Introductionmentioning

confidence: 99%

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New Porous Carbon Material Derived from Carbon Microspheres Assembled in Hollow Carbon Spheres and Its Application to Toluene Adsorption

Qin

Asamoah

et al. 2023

Langmuir

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In this paper, a new porous carbon material adsorbent was prepared using carbon microspheres assembled in hollow carbon spheres (HCS) with a hydrothermal method. Transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and Raman spectroscopy were used to characterize the adsorbents. It was found that the diameter of carbon microspheres derived from 0.1 mol/L glucose was about 130 nm, which could be inserted inside HCS (pore size was 370−450 nm). The increase in glucose concentration would promote the diameter of carbon microspheres (CSs), and coarse CSs could not be loaded in the mesopores or macropores of HCS. Thus, the C 0.1 @HCS adsorbent had the highest Brunauer−Emmett−Teller surface area (1945 m 2 /g) and total pore volume (1.627 cm 3 /g). At the same time, C 0.1 @HCS posed a suitable ratio of micropores and mesopores, which could provide adsorption sites and volatile organic compound diffusion channels. Moreover, oxygen-containing functional groups −OH and C�O in CSs were also introduced into HCS, and the adsorption capacity and regenerability performance of the adsorbents were improved. The dynamic adsorption capacity of C 0.1 @HCS for toluene reached 813 mg/g, and the Bangham model was more suitable for describing the toluene adsorption process. The adsorption capacity was stably kept above 770 mg/g after eight adsorption−desorption cycles.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

New Porous Carbon Material Derived from Carbon Microspheres Assembled in Hollow Carbon Spheres and Its Application to Toluene Adsorption

Qin

Asamoah

et al. 2023

Langmuir

View full text Add to dashboard Cite

show abstract

“…Doping consisted of metal doping and non-metal doping by forming impurity levels at low and high band gaps in semiconductors, respectively. These could not only improve the photoresponse range of the photocatalyst but also improve the mobility of photogenerated electrons so as to improve the photocatalytic performance [ 66 , 67 ]. For example, Antonopoulou et al [ 39 ] prepared N and N, S co-doped TiO 2 catalysts via a simple sol-gel method to evaluate the degradation of TCPP in aqueous solutions under UV-vis light irradiation.…”

Section: Photocatalysis Methodsmentioning

confidence: 99%

Organophosphate Esters (OPEs) Flame Retardants in Water: A Review of Photocatalysis, Adsorption, and Biological Degradation

et al. 2023

Self Cite

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As a substitute for banned brominated flame retardants (BFRs), the use of organophosphate esters (OPEs) increased year by year with the increase in industrial production and living demand. It was inevitable that OPEs would be discharged into wastewater in excess, which posed a great threat to the health of human beings and aquatic organisms. In the past few decades, people used various methods to remove refractory OPEs. This paper reviewed the photocatalysis method, the adsorption method with wide applicability, and the biological method mainly relying on enzymolysis and hydrolysis to degrade OPEs in water. All three of these methods had the advantages of high removal efficiency and environmental protection for various organic pollutants. The degradation efficiency of OPEs, degradation mechanisms, and conversion products of OPEs by three methods were discussed and summarized. Finally, the development prospects and challenges of OPEs’ degradation technology were discussed.

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“…Metal–organic frameworks (MOFs) have various applications such as gas storage, separation, and catalysis. − In the past time, various MOFs had been used to study iodine capture, , such as Cu-BTC, MIL-53 series (Al), MIL-101 (Al), MOF-74, JNU-200 (Co), Zr-MOFs, ZIF-8, and Cd-MOF . Further research was needed to explore MOFs with higher adsorption capacity, selectivity, stability, and low cost.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Radioactive Iodine Trapping Mechanism by Zinc-Based Metal–Organic Frameworks with Various N-Containing Carboxylate Ligands

et al. 2023

ACS Appl. Mater. Interfaces

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This study aimed to develop effective adsorbents for capturing radioactive iodine in nuclear power waste gas. Two zinc metal−organic frameworks (Zn-MOFs) were synthesized and found to have favorable properties such as a large surface area, thermal stability, surface rich in π-electron-containing nitrogen, and redox potential. Adsorption experiments revealed maximum capacities of 1.25 and 1.96 g g −1 for the MOFs at 75 °C, with the pseudo-second-order kinetic model fitting the data well. The Langmuir equation provided a better fit in cyclohexane, with maximum adsorption amounts of 249 and 358 mg g −1 for Zn-MOF-1 and Zn-MOF-2, respectively. The MOFs were also stable during six cycles of adsorption and desorption. Furthermore, electron transfer occurred due to the synergistic adsorption of Zn, N, and O atoms, resulting in the conversion of some iodine to polyiodide. Zn-MOF-2 exhibited better chemisorption than Zn-MOF-1 due to a smaller highest occupied molecular orbital (HOMO)−lowest unoccupied molecular orbital (LUMO) gap. Notably, it was discovered that N-containing radicals had stronger interactions with iodine compared to radicals without N. These findings provide valuable insights into MOF synthesis and environmental protection.

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A systematic review of intermediates and their characterization methods in VOCs degradation by different catalytic technologies

Cited by 76 publications

References 144 publications

New Porous Carbon Material Derived from Carbon Microspheres Assembled in Hollow Carbon Spheres and Its Application to Toluene Adsorption

New Porous Carbon Material Derived from Carbon Microspheres Assembled in Hollow Carbon Spheres and Its Application to Toluene Adsorption

Organophosphate Esters (OPEs) Flame Retardants in Water: A Review of Photocatalysis, Adsorption, and Biological Degradation

Analysis of Radioactive Iodine Trapping Mechanism by Zinc-Based Metal–Organic Frameworks with Various N-Containing Carboxylate Ligands

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