ORCID Profile
0000-0001-9578-6533
Current Organisation
Guangdong University of Technology
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Publisher: Elsevier BV
Date: 05-2019
Publisher: Elsevier BV
Date: 07-2017
Publisher: Elsevier BV
Date: 02-2018
Publisher: Elsevier BV
Date: 2024
Publisher: MDPI AG
Date: 2020
Abstract: Fe-based metallic glasses have been demonstrated as effective heterogeneous catalysts in Fenton-like processes for dye degradation. Yet, currently corresponding studies have limitations due to the limited study object (dyes) and the correlation between metallic glasses and dye pollutants in Fenton-like processes is still not comprehensively studied. Accordingly, this work intensively investigated the thermal catalytic behavior correlations between two Fe-based metallic glasses (Fe78Si9B13 and Fe73.5Si13.5B9Cu1Nb3) and eight different dyes. Results indicated a lower activation energy in the more active metallic glass and a dependence of the activation energy of Fe-based metallic glasses in dye solutions. In addition, a high H2O2 concentration led to a declined catalytic efficiency but a photo-enhanced Fenton-like process overcame this limitation at high concentration of H2O2 due to the decrease of pH and enhancement of irradiation. Furthermore, the average mineralization rates of Fe78Si9B13 and Fe73.5Si13.5B9Cu1Nb3 have been measured to be 42.7% and 12.6%, respectively, and the correlation between decolorization and mineralization revealed that a faster decolorization in a Fenton-like process contributed to a higher mineralization rate. This work provides an intrinsic viewpoint of the correlation between Fe-based metallic glasses and dyes in Fenton-like processes and holds the promise to further promote the industrial value of metallic glasses.
Publisher: Elsevier BV
Date: 10-2021
Publisher: Elsevier BV
Date: 02-2018
Publisher: Elsevier
Date: 2022
Publisher: Elsevier BV
Date: 02-2017
Publisher: American Chemical Society (ACS)
Date: 10-09-2020
Publisher: Wiley
Date: 30-05-2021
Abstract: Developing highly efficient and durable electrocatalysts for hydrogen evolution reaction (HER) under both alkaline and acidic media is crucial for the future development of a hydrogen economy. However, state‐of‐the‐art high‐performance electrocatalysts recently developed are based on carbon carriers mediated by binding noble elements and their complicated processing methods are a major impediment to commercialization. Here, inspired by the high‐entropy alloy concept with its inherent multinary nature and using a glassy alloy design with its chemical homogeneity and tunability, we present a scalable strategy to alloy five equiatomic elements, PdPtCuNiP, into a high‐entropy metallic glass (HEMG) for HER in both alkaline and acidic conditions. Surface dealloying of the HEMG creates a nanosponge‐like architecture with nanopores and embedded nanocrystals that provides abundant active sites to achieve outstanding HER activity. The obtained overpotentials at a current density of 10 mA cm −2 are 32 and 62 mV in 1.0 m KOH and 0.5 m H 2 SO 4 solutions, respectively, outperforming most currently available electrocatalysts. Density functional theory reveals that a lattice distortion and the chemical complexity of the nanocrystals lead to a strong synergistic effect on the electronic structure that further stabilizes hydrogen proton adsorption/desorption. This HEMG strategy establishes a new paradigm for designing compositionally complex alloys for electrochemical reactions.
Publisher: Elsevier BV
Date: 2021
Publisher: Wiley
Date: 08-02-2019
Publisher: Elsevier BV
Date: 10-2021
Publisher: Elsevier BV
Date: 06-2023
Publisher: Elsevier BV
Date: 09-2019
Publisher: Elsevier BV
Date: 2021
Publisher: Wiley
Date: 13-09-2018
Abstract: Metallic glasses (MGs) with the metastable nature and random atomic packing structure have attracted large attention in the catalytic family due to their superior catalytic performance. In contrast, their crystalline counterparts are restricted by the highly ordered packing structure, fewer surface active sites, and crystallographic defects for catalytic activity. The uncertainty of the different catalytic mechanisms and the intrinsic characteristics correlated to MGs and their crystalline counterparts become a major impediment to promote their catalytic efficiencies and widespread applications. Herein, it is reported that the excellent catalytic behavior in Fe-based MGs goes through a detrimental effect with the partial crystallization, but receives a compelling rejuvenation in the full crystallization. Further investigation reveals that multiphase intermetallics with electric potential differences in fully crystallized alloys facilitate the formation of galvanic cells. More importantly, extensively reduced grain boundaries due to grain growth greatly weaken electron trapping and promote inner electron transportation. The relatively homogenous grain-boundary corrosion in the intermetallics contributes to well-separated phases after reaction, leading to refreshment of the surface active sites, thereby quickly activating hydrogen peroxide and rapidly degrading organic pollutants. The exploration of catalytic mechanisms in the crystalline counterparts of MGs provides significant insights into revolutionize novel catalysts.
Publisher: Wiley
Date: 18-10-2018
Abstract: With an intrinsically disordered atomic structure and a widely tunable atomic constituent, metallic glasses (MGs) have been extensively studied as promising catalysts in different catalytic fields. Particularly, Fe-based MGs with high catalytic activity, relatively low material cost, and environmental friendly compatibility also emerge as advanced catalysts. This review systematically discusses the recent advances of Fe-based MGs in catalytic applications, including wastewater remediation based on reductive degradation by multicomponent Fe-based MGs, oxidative degradation by introduction of advanced oxidation processes (AOPs) and nanocrystallization applied in Fe-based MGs up to date, and renewable energy conversion, with purposes of revealing Fe-based MG catalysts in the further improvement of catalytic performance and exploiting their promising catalytic abilities in a widely catalytic field.
Publisher: Elsevier BV
Date: 04-2022
Publisher: Elsevier BV
Date: 10-2021
Publisher: Trans Tech Publications, Ltd.
Date: 05-2018
DOI: 10.4028/WWW.SCIENTIFIC.NET/MSF.921.13
Abstract: In this work, the heat-activated persulfate (PS) in the presence of Fe 78 Si 9 B 13 metallic glasses (MGs) shows an extremely difference in degradation of azo dye and triarylmethane dye, where Fe 78 Si 9 B 13 MGs exhibits a superior activation ability for PS with assistance of heat leading to the fast removal of two dyes. The structural features of Fe 78 Si 9 B 13 MGs are firstly characterized by X-ray diffraction (XRD) and differential scanning calorimetry (DSC), following analysis of surface topography by scanning electron microscope (SEM). The results show that with the addition of Fe 78 Si 9 B 13 MGs, the recalcitrant azo dye is completely removed within 5 min while only 6% of removal rate can be achieved without adding MGs, indicating that the refractory azo dye can be easily degraded by sulfate radical (SO 4 • – ) from heat/MGs/PS. On the other hand, no big variation occurs between PS and MGs/PS under heat activation in degrading triarylmethane dye. Sole PS activated by heat results in a fast removal rate, indicating that triarylmethane dye can be easily degraded by PS itself compared to azo dye. The findings in this work present an in-depth understanding of heat/MGs/PS system in dyes degradation.
Publisher: Elsevier BV
Date: 12-2017
Publisher: MDPI AG
Date: 17-07-2017
DOI: 10.3390/MET7070273
Publisher: Elsevier BV
Date: 2021
Publisher: Elsevier BV
Date: 08-2019
Publisher: Elsevier BV
Date: 10-2021
Publisher: Elsevier BV
Date: 05-2020
Publisher: Springer Science and Business Media LLC
Date: 21-05-2019
DOI: 10.1038/S41598-019-42973-6
Abstract: Exploring an efficient and photostable heterostructured photocatalyst is a pivotal scientific topic for worldwide energy and environmental concerns. Herein, we reported that Pt decorated g-C 3 N 4 /Bi 2 MoO 6 heterostructured composites with enhanced photocatalytic performance under visible light were simply synthesized by one-step hydrothermal method for methylene blue (MB) dye degradation. Results revealed that the synthetic Pt decorated g-C 3 N 4 /Bi 2 MoO 6 composites with Bi 2 MoO 6 contents of 20 wt.% (Pt@CN/20%BMO) presented the highest photocatalytic activity, exhibiting 7 and 18 times higher reactivity than the pure g-C 3 N 4 and Bi 2 MoO 6 , respectively. Structural analyses showed that Bi 2 MoO 6 microplates were anchored on the wrinkled flower-like g-C 3 N 4 matrix with Pt decoration, leading to a large expansion of specific surface area from 10.79 m 2 /g for pure Bi 2 MoO 6 to 46.09 m 2 /g for Pt@CN/20%BMO. In addition, the Pt@CN/20%BMO composites exhibited an improved absorption ability in the visible light region, presenting a promoted photocatalytic MB degradation. Quenching experiments were also conducted to provide solid evidences for the production of hydroxyl radicals ( • OH), electrons (e − ), holes (h + ) and superoxide radicals ( • O 2− ) during dye degradation. The findings in this critical work provide insights into the synthesis of heterostructured photocatalysts with the optimization of band gaps, light response and photocatalytic performance in wastewater remediation.
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1CP00701G
Abstract: Pulsed laser strategies ( i.e. pulsed laser ablation and fragmentation in liquid) have been reviewed with a focus on the synthesis and processing of amorphous metal nanoparticles. The possible formation criteria and mechanism have been discussed.
Publisher: Elsevier BV
Date: 04-2017
No related grants have been discovered for Shun-Xing Liang.