Polyoxometalate-Coated Magnetic Nanospheres for Highly Selective Isolation of Immunoglobulin G

Zhang, Dandan; Guo, Zhiyong; Guo, Pengfei; Hu, Xue; Chen, Xuwei; Wang, Jianhua

doi:10.1021/acsami.8b05334

Cited by 24 publications

(4 citation statements)

References 43 publications

(50 reference statements)

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“…Other than CoPc, partially oxidized Co particles supported on the single‐layer N‐doped graphene could electrochemically reduce CO 2 to MeOH as well. [ 118 ] In this work, the size of the partially oxidized Co particles was around 5 nm. With the strong synergistic effect between the Co particles and the single‐layer graphene substrate, the catalyst exhibited a FE CH3OH of 71.4% at overpotential of 280 mV with a current density of 4 mA cm −2 for 10 h. It showed that the combination of Co‐based catalyst and the carbon substrate widened the product distribution of ECO 2 RR.…”

Section: The Reduction Product Distribution By Co‐based Catalystsmentioning

confidence: 73%

Nanostructured Cobalt‐Based Electrocatalysts for CO₂Reduction: Recent Progress, Challenges, and Perspectives

Chen

Zhang

et al. 2020

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million (ppm), which is ≈50% higher than that of the pre-industrial level (280 ppm). [1] The consequent climate change (the average temperature increase of 0.8 °C above the pre-industrial level) causes global warming, one of the top environmental concerns. [2] To maintain the sustainable development of the society, the Intergovernmental Panel on Climate Change (IPCC) recently recommended the warming limit to 1.5 °C rather than 2.0 °C to reduce catastrophic climate change issues, requiring the commitment to take action to control global carbon emission. [3] Under the Paris Agreement, many countries endeavor to reduce greenhouse gas emissions gradually by 2030. [4] The carbon capture and storage (CCS) is a feasible strategy to lower the CO 2 emissions substantially. Long-term storage issues related to the leakage of CO 2 and the lack of economic incentives limited its development. [5] The CO 2 reduction reactions (CO 2 RR) that convert CO 2 into other value-added carbon products could provide a well alternative to the utilization of the captured CO 2 , which not only contributes to the mitigation of CO 2 emission but also offers useful products that can serve as fuels such as CO, HCOOH, CH 3 OH, and CH 4. [6] Moreover, the drive power of CO 2 RR could come from renewable energy resources, such as solar, wind, and hydraulic resources, which indicates that in a green concept, CO 2 RR could complete the carbon loop and potentially solve the issues of global warming and energy crisis simultaneously. [7] 1.1. Fundamental Reaction Pathways of CO 2 RR CO 2 RR is not thermodynamically and kinetically favorable. Every reduction pathway demands a certain amount of energy input. Equations (1-13) shows the reaction steps involved in CO 2 RR (in pH = 7 aqueous solution, vs Normal Hydrogen Electrode (NHE)). [8] As illustrated, it requires a significant amount of reorganizational energy between the linear molecule CO 2 and the bent radical anion − CO 2 • (Equation (1)). When coupling with proton in the reaction, the required reaction energy decreases (Equations (2-12)). Aqueous media with H 2 O molecules become ideal for providing proton into the CO 2 RR system. The reduction potential of hydrogen evolution reaction (HER) (Equation (13)) is close to that of CO 2 RR. It makes HER a competitive reaction against CO 2 RR during the reduction CO 2 reduction reaction (CO 2 RR) provides a promising strategy for sustainable carbon fixation by converting CO 2 into value-added fuels and chemicals. In recent years, considerable efforts are focused on the development of transition-metal (TM)-based catalysts for the selectively electrochemical CO 2 reduction reaction (ECO 2 RR). Co-based catalysts emerge as one of the most promising electrocatalysts with high Faradaic efficiency, current density, and low overpotential, exhibiting excellent catalytic performance toward ECO 2 RR for CO and HCOOH productions that are economically viable. The intrinsic contribution of Co and the synergistic effects in Co-hybrid catalysts play essential roles for ...

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Section: The Reduction Product Distribution By Co‐based Catalystsmentioning

confidence: 73%

Nanostructured Cobalt‐Based Electrocatalysts for CO₂Reduction: Recent Progress, Challenges, and Perspectives

Chen

Zhang

et al. 2020

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“…The long‐term electrolysis of carbon monoxide was performed at −0.87 V, with no significant decay of the current density and FE CH3OH . Finally, we summarized the recently reported electrocatalysts, [ 47–55 ] including metal oxides and metal alloys, for electrocatalytic CO 2 ‐to‐CH 3 OH conversion (Figure 4c). For a reasonable comparison, we only included data in aqueous electrolytes using H‐cell.…”

Section: Resultsmentioning

confidence: 99%

Ultrathin, Cationic Covalent Organic Nanosheets for Enhanced CO₂ Electroreduction to Methanol

Song,

Guo,

et al. 2023

Advanced Materials

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Metalloporphyrins and metallophthalocyanines emerge as popular building blocks to develop covalent organic nanosheets (CONs) for CO2 reduction reaction (CO2RR). However, existing CONs predominantly yield CO, posing a challenge in achieving efficient methanol production through multielectron reduction. Here, ultrathin, cationic, and cobalt‐phthalocyanine‐based CONs (iminium‐CONs) are reported for electrochemical CO2‐to‐CH3OH conversion. The integration of quaternary iminium groups enables the formation of ultrathin morphology with uniformly anchored cobalt active sites, which are pivotal for facilitating rapid multielectron transfer. Moreover, the cationic iminium‐CONs exhibit a lower activity for hydrogen evolution side reaction. Consequently, iminium‐CONs manifest significantly enhanced selectivity for methanol production, as evidenced by a remarkable 711% and 270% improvement in methanol partial current density (jCH3OH) compared to pristine CoTAPc and neutral imine‐CONs, respectively. Under optimized conditions, iminium‐CONs deliver a high jCH3OH of 91.7 mA cm−2 at −0.78 V in a flow cell. Further, iminium‐CONs achieve a global methanol Faradaic efficiency (FECH3OH) of 54% in a tandem device. Thanks to the single‐site feature, the methanol is produced without the concurrent generation of other liquid byproducts. This work underscores the potential of cationic covalent organic nanosheets as a compelling platform for electrochemical six‐electron reduction of CO2 to methanol.

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“…The surface chemistry of the as-prepared NCoC@G-CNTs samples was measured via XPS. In the C 1s spectrum (Figure 2d) of NCoC@G-CNTs, three subpeaks located at 284.7, 286.6, and 288.7 eV corresponded to the CÀ C, CÀ N, and C=N bonds, respectively, [22] indicating the N doping in the carbon matrix. The corresponding N 1s spectrum is presented in Figure 2e, which can be differentiated into three types of nitrogen:…”

Section: Resultsmentioning

confidence: 99%

Hierarchical Rambutan‐Like CNTs‐Assembled N−Co−C@rGO Composite as Sulfur Immobilizer for High‐Performance Lithium‐Sulfur Batteries

et al. 2019

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The design of efficient sulfur‐host materials is of great significance to enhance the conductivity of lithium‐sulfur (Li−S) batteries and inhibit the shuttle effect of polysulfides. Hence, a nitrogen and cobalt co‐doped graphitized carbon (N−Co−C)‐coated reduced graphene oxide (rGO) with plenty of carbon nanotubes (CNTs) was rationally designed. The composite had abundant multiple adsorptive and electrocatalytic sites to provide strong chemical trapping for polysulfides and simultaneously propel their electrochemical kinetics. The densely grafted small‐diameter CNTs could shorten the ion‐diffusion pathways and maintain the structural stability of the electrode materials. Meanwhile, abundant pore structures could provide enough volume for sulfur impregnation and physical adsorption of polysulfides. Owing to these favorable features, the as‐prepared rambutan‐like S/N−Co−C@rGO‐CNTs (S/NCoC@G‐CNTs) composite demonstrated excellent electrochemical performance with a high initial specific capacity of 1225.8 mAh g−1 at 0.2 C and high rate performance of 632.5 mAh g−1 at 5.0 C and possessed decent areal capacity under high raised sulfur loading of up to 5 mg cm−2.

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Polyoxometalate-Coated Magnetic Nanospheres for Highly Selective Isolation of Immunoglobulin G

Cited by 24 publications

References 43 publications

Nanostructured Cobalt‐Based Electrocatalysts for CO₂Reduction: Recent Progress, Challenges, and Perspectives

Nanostructured Cobalt‐Based Electrocatalysts for CO₂Reduction: Recent Progress, Challenges, and Perspectives

Ultrathin, Cationic Covalent Organic Nanosheets for Enhanced CO₂ Electroreduction to Methanol

Hierarchical Rambutan‐Like CNTs‐Assembled N−Co−C@rGO Composite as Sulfur Immobilizer for High‐Performance Lithium‐Sulfur Batteries

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Polyoxometalate-Coated Magnetic Nanospheres for Highly Selective Isolation of Immunoglobulin G

Cited by 24 publications

References 43 publications

Nanostructured Cobalt‐Based Electrocatalysts for CO2Reduction: Recent Progress, Challenges, and Perspectives

Nanostructured Cobalt‐Based Electrocatalysts for CO2Reduction: Recent Progress, Challenges, and Perspectives

Ultrathin, Cationic Covalent Organic Nanosheets for Enhanced CO2 Electroreduction to Methanol

Hierarchical Rambutan‐Like CNTs‐Assembled N−Co−C@rGO Composite as Sulfur Immobilizer for High‐Performance Lithium‐Sulfur Batteries

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Nanostructured Cobalt‐Based Electrocatalysts for CO₂Reduction: Recent Progress, Challenges, and Perspectives

Nanostructured Cobalt‐Based Electrocatalysts for CO₂Reduction: Recent Progress, Challenges, and Perspectives

Ultrathin, Cationic Covalent Organic Nanosheets for Enhanced CO₂ Electroreduction to Methanol