An optofluidic planar microreactor for photocatalytic reduction of CO2 in alkaline environment

Cheng, Xin; Chen, Rong; Zhu, Xun; Liu, Qiang; An, Liang; Ye, Dingding; He, Xiao‐Ting; Li, Shuzhe; Li, Lin

doi:10.1016/j.energy.2016.11.081

Cited by 56 publications

(28 citation statements)

References 36 publications

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“…The overall monomer/controlling agent ratio being set at 30, the polymer chains obtained at complete conversion have an experimentally determined (SEC analysis) number average molar mass, M n ¼ 11200 g mol À1 , not far from the expected 30 monomer units per chain (M n,th ¼ 15,625 g mol À1 ) and a low dispersity (Ɖ ¼ 1. 19). …”

Section: Monomer and Copolymer Synthesismentioning

confidence: 93%

“…The experimentally determined molar mass (M n ¼ 43,900 g mol À1 ) of the polymer analyzed after this step increased relative to the starting P(MAA 15 -co-PEOMA 15 ) chains while the molar mass distribution remained narrow (Ɖ ¼ 1.3) although slightly broader than for P(MAA 15 -co-PEOMA 15 ) (Ɖ ¼ 1. 19). This appears related to the presence of a certain amount of dead P(MAA 15 -co-PEOMA 15 ) chains, see Fig.…”

Section: Monomer and Copolymer Synthesismentioning

confidence: 93%

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Amphiphilic core-cross-linked micelles functionalized with bis(4-methoxyphenyl)phenylphosphine as catalytic nanoreactors for biphasic hydroformylation

Chen

Cardozo

Julcour-Lebigue

et al. 2015

Polymer

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a b s t r a c tCore-cross-linked micelles (CCM) functionalized at the core with covalently linked bis(p-methoxyphenyl) phenylphosphine (BMOPPP) ligands have been synthesized by a three-step one-pot radical polymerization in emulsion, using the polymerization-induced self-assembly (PISA) strategy and reversible addition-fragmentation chain transfer (RAFT) as the controlling method. The CCM are obtained by chain extending in water poly(methacrylic acid-co-poly(ethylene oxide) methyl ether methacrylate) (P(MAAco-PEOMA), degree of polymerization of 30, MAA/PEOMA units molar ratio of 50:50) synthesized in a first step by RAFT with a 95:5 M mixture of styrene and 4-[bis(p-methoxyphenyl)phosphino]styrene (BMOPPS) units. The resulting micelles exhibiting a core composed of P(S-co-BMOPPS) segments with a degree of polymerization of 300 are then crosslinked in a third step with a mixture of di(ethylene glycol) dimethacrylate (DEGDMA) and styrene. The resulting BMOPPP@CCM exhibit a narrow size distribution (PDI ¼ 0.16) with an average diameter of 81 nm in water and swell in THF or by addition of toluene to the latex. The addition of [Rh(acac) (CO) 2 ] to the toluene-swollen latex results in metal coordination to the phosphine ligands. 31 P{ 1 H} NMR spectroscopy shows that the Rh centers undergo rapid intraparticle phosphine ligand exchange. Application of these nanoreactors to the aqueous biphasic hydroformylation of 1-octene shows excellent activity and moderate catalyst leaching.

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Section: Monomer and Copolymer Synthesismentioning

confidence: 93%

Section: Monomer and Copolymer Synthesismentioning

confidence: 93%

Amphiphilic core-cross-linked micelles functionalized with bis(4-methoxyphenyl)phenylphosphine as catalytic nanoreactors for biphasic hydroformylation

Chen

Cardozo

Julcour-Lebigue

et al. 2015

Polymer

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“…When exposed to electromagnetic radiation with energy equal to or higher than the band gap, the valence electrons in the materials are excited into the conduction band, creating positively charged holes in the valence band. The redox thermodynamics of a photocatalyst is determined by the electrode potentials of the generated charge carriers, while kinetic aspects are determined by • Monolith reactor [76] • Micro-reactor [77] Electrochemical reduction Electricity CH 3 OH, HCOOH • Microfluidic device [78] • Coupling with photocatalysis [79] • Gas diffuse electrode [80] • Membrane reactor [81] Thermochemical reduction Heat CO, H 2 ,…”

Section: Photocatalysismentioning

confidence: 99%

Process intensification technologies for CO2 capture and conversion – a review

2020

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With the concentration of CO 2 in the atmosphere increasing beyond sustainable limits, much research is currently focused on developing solutions to mitigate this problem. Possible strategies involve sequestering the emitted CO 2 for long-term storage deep underground, and conversion of CO 2 into value-added products. Conventional processes for each of these solutions often have high-capital costs associated and kinetic limitations in different process steps. Additionally, CO 2 is thermodynamically a very stable molecule and difficult to activate. Despite such challenges, a number of methods for CO 2 capture and conversion have been investigated including absorption, photocatalysis, electrochemical and thermochemical methods. Conventional technologies employed in these processes often suffer from low selectivity and conversion, and lack energy efficiency. Therefore, suitable process intensification techniques based on equipment, material and process development strategies can play a key role at enabling the deployment of these processes. In this review paper, the cutting-edge intensification technologies being applied in CO 2 capture and conversion are reported and discussed, with the main focus on the chemical conversion methods.

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“…In spite of this, their application in the challenging CO 2 -to-methanol reaction is still scarce (Albo and García. 2021;Cheng et al, 2017aCheng et al, , 2017bCheng et al, , 2019Chen et al, 2017). Moreover, the stability issue with longer periods of light irradiation is usually attributed to the reduction in the ability to absorb light due to particle detachment and the formation of intermediate un-desorbed products that block the active sites .…”

Section: Introductionmentioning

confidence: 99%

Porous TiO2 thin film-based photocatalytic windows for an enhanced operation of optofluidic microreactors in CO2 conversion

et al. 2021

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An optofluidic planar microreactor for photocatalytic reduction of CO2 in alkaline environment

Cited by 56 publications

References 36 publications

Amphiphilic core-cross-linked micelles functionalized with bis(4-methoxyphenyl)phenylphosphine as catalytic nanoreactors for biphasic hydroformylation

Amphiphilic core-cross-linked micelles functionalized with bis(4-methoxyphenyl)phenylphosphine as catalytic nanoreactors for biphasic hydroformylation

Process intensification technologies for CO2 capture and conversion – a review

Porous TiO2 thin film-based photocatalytic windows for an enhanced operation of optofluidic microreactors in CO2 conversion

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