Porous carbon spheres for simultaneous removal of benzene and H2S

Qi, Junwen; Wei, Guoping; Li, Yang; Li, Jiansheng; Sun, Xiuyun; Shen, Jinyou; Han, Weiqing; Wang, Lianjun

doi:10.1016/j.cej.2018.01.157

Cited by 55 publications

(13 citation statements)

References 56 publications

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“…The different features for VOCs' removal such as recovery (%), absorption capacity (AC), and aromatic compounds are compared together. Based on the results, the ST/HS-SPE procedure was comparable to other sorbent which was reported in different works (Bagheri Hosseinabadi et al 2019;Osanloo and Qurban-Dadras 2014;Faghihi Zarandi et al 2018;Jahangiri et al 2011;Hansmeier, 2010;Bina et al 2012;Shariq Vohra 2015;Qi et al 2018;Gholami et al 2014;Liu et al 2016;Rostami and Jonidi Jafari 2014;Vahdat Parast et al 2014;Britt et al Table 1 Validation…”

Section: Discussion and Comparing To Other Methodssupporting

confidence: 73%

Dynamic and static removal of benzene from air based on task-specific ionic liquid coated on MWCNTs by sorbent tube-headspace solid-phase extraction procedure

Ashouri

Shirkhanloo

Rashidi³

et al. 2020

Int. J. Environ. Sci. Technol.

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Human exposure to high levels of benzene in the air leads to toxic effects in human body and so, it is necessary to determine by high sensitivity and precision methodology. A simple and efficient method based on the triphenyl(3-sulfopropyl) phosphonium p-toluenesulfonate as TSIL was coated on multi-walled carbon nanotubes ([TPhPP][SUTO]-MWCNTs) and used for benzene vapor removal from air. By procedure, the tube and headspace sorbent based on solid-phase extraction coupled to gas chromatography-flame ionization detector (ST/HS-SPE-GC-FID) was used in dynamic and static systems, respectively. All effected factors including the flow rate, the mass sorbent, benzene concentration, the contact time and the temperature were optimized in dynamic and static systems. Chamber was designed for benzene generation in pure air, and then, mixture of gas moved to passive thermal desorption tubes (ST) or head space (HS) in the glass chromatography vials as dynamic and static methods, respectively. The benzene was eliminated from air with 10 mg of ([TPhPP][SUTO]-MWCNTs); C 28 H 29 O 6 PS 2 -MWCNTs, 1:1] at 25 °C, desorbed from the sorbent at 95 °C and measured by GC-FID. The removal efficiency and the absorption capacity of [TPhPP][SUTO]-MWCNTs for benzene were obtained to be 98.8% and 169.6 mg g −1 at flow rate of 300 ml min −1 . The chemical adsorption of benzene from air was related to π-π, electrostatic, hydrophobic interactions between aromatic chains of TSILs with the benzene molecules, and it caused the increase the removal efficiently of benzene vapor from air more than 95%. The results were validated by GC-MS and spiking of real samples which was determined by GC-FID.

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Section: Discussion and Comparing To Other Methodssupporting

confidence: 73%

Dynamic and static removal of benzene from air based on task-specific ionic liquid coated on MWCNTs by sorbent tube-headspace solid-phase extraction procedure

Ashouri

Shirkhanloo

Rashidi³

et al. 2020

Int. J. Environ. Sci. Technol.

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“…For example, the H 2 S adsorption capacities of CTF-1-400-600 were in the range of 6.4−12.8 mmol/g at 0−50 °C and 1.0 bar, which were better than many reported H 2 S adsorption materials. 46,47 The highest H 2 S capacities of CTF-1-400-600 among CTF-1-x samples were attributed to its largest BET surface area and suitable content of nitrogen base sites. Compared with H 2 S, CTF-1-400-600 adsorbs moderate amounts of CO 2 , giving capacities of 2.6−6.5 mmol/g at 0− 50 °C and 1.0 bar.…”

Section: ■ Results and Discussionmentioning

confidence: 96%

Efficiently Selective Oxidation of H₂S to Elemental Sulfur over Covalent Triazine Framework Catalysts

Peng

Kan

Chen

et al. 2021

ACS Appl. Mater. Interfaces

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As a highly toxic and corrosive waste gas in the industry, hydrogen sulfide (H 2 S) usually originates from the utilization of coal, petroleum, and natural gas. The selective catalytic elimination of H 2 S shows great significance to ensure the safety of industrial processes and health of human beings. Herein, we report efficiently selective oxidation of H 2 S to elemental sulfur over covalent triazine framework (CTF-1-x, x = 400, 500, 600, 400-600 °C) catalysts. CTF-1-x samples were prepared from polymerization of 1,4-dicyanobenzene to form polyaryl triazine networks under ion solidothermal conditions in the presence of ZnCl 2 , which acts as both an initiator and a porogen. The resultant CTF-1-x samples possess abundant micro−mesoporosity, large Brunauer−Emmett−Teller (BET) surface areas, and tunable structural base sites with edge amine and graphitic nitrogen characteristics, which were homogeneously decorated onto their frameworks. As a result, CTF-1-x samples act as efficient and long-lived catalysts in selective oxidation of H 2 S to sulfur under ambient conditions (100% H 2 S conversion, 100% sulfur selectivity at 180 °C, 12 000 mL/(g•h)), and their activities were superior to those of commercial Fe 2 O 3 and g-C 3 N 4 desulfurization catalysts. Abundant nitrogen structural base sites of CTF-1-x effectively activate the reactants, and abundant micro−mesoporosity facilitates mass transfer in and out of CTF-1-x. The improved design of the nitrogen-doped carbon material for H 2 S activation and conversion could enhance the development of more active and robust nitrogen-doped carbon catalysts.

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“…Reducing the pore size of face respirators and chemical protection clothes down below the particulate size could isolate the protege from certain chemical hazards, such as microorganisms, while it also brings difficulty in breathing and releasing the thermal stress [ 28 ] . Materials with high surface area, such as activated carbon, [ 29 ] have been commonly applied for assembling face masks and chemical protective clothes due to the strong physical adsorption ability and low fabrication cost, while the low filtration efficiency, the easy saturation by non-toxic adsorbents, as well as the risk for secondary toxicant release, still restricts its application in high-risk occupational circumstances. In this section, we focus on PPEs which could chemically interact with the chemical hazards by permanently convert the toxicants into harmless agents or generate alert signals to the proteges.…”

Section: Functional Materials and Structural Design For Improved Ppe Performancementioning

confidence: 99%

Materials in advanced design of personal protective equipment: a review

Shi

et al. 2021

Materials Today Advances

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The outbreak of Covid-19 pandemic has aroused tremendous attention towards personal protective equipment (PPE) in both scientific research and industrial manufacture. Despite decades of development in PPE design and fabrication, there’s still much room for further optimization, in terms of both protection performance and wear comfort. Interdisciplinary efforts have been devoted in this research field in recent years. Significantly, the innovation of materials, which brings about improved performance and versatile new functions for PPEs, has been widely adopted in PPE design. In this minireview, recent progress in the development of novel materials and structural designs for PPE application are presented in detail, with the introduction of various material-based strategies for different PPE type, as well as the examples which applies auxiliary components into face masks to enrich the functionalities and improve the personal feelings in pandemic period.

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Porous carbon spheres for simultaneous removal of benzene and H2S

Cited by 55 publications

References 56 publications

Dynamic and static removal of benzene from air based on task-specific ionic liquid coated on MWCNTs by sorbent tube-headspace solid-phase extraction procedure

Dynamic and static removal of benzene from air based on task-specific ionic liquid coated on MWCNTs by sorbent tube-headspace solid-phase extraction procedure

Efficiently Selective Oxidation of H₂S to Elemental Sulfur over Covalent Triazine Framework Catalysts

Materials in advanced design of personal protective equipment: a review

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Porous carbon spheres for simultaneous removal of benzene and H2S

Cited by 55 publications

References 56 publications

Dynamic and static removal of benzene from air based on task-specific ionic liquid coated on MWCNTs by sorbent tube-headspace solid-phase extraction procedure

Dynamic and static removal of benzene from air based on task-specific ionic liquid coated on MWCNTs by sorbent tube-headspace solid-phase extraction procedure

Efficiently Selective Oxidation of H2S to Elemental Sulfur over Covalent Triazine Framework Catalysts

Materials in advanced design of personal protective equipment: a review

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Efficiently Selective Oxidation of H₂S to Elemental Sulfur over Covalent Triazine Framework Catalysts