Calcined layered double hydroxides/reduced graphene oxide composites with improved photocatalytic degradation of paracetamol and efficient oxidation-adsorption of As(III)

Zhu, Jian; Zhu, Zhiliang; Zhang, Hua; Lu, Hongtao; Zhang, Wei; Qiu, Yanling; Zhu, Linyan; Küppers, Stephan

doi:10.1016/j.apcatb.2017.12.003

Cited by 120 publications

(41 citation statements)

References 53 publications

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“…A) Photocatalytic degradation and B) adsorption of paracetamolb ys erial LDH composites. [88] Chem. AsianJ .…”

Section: Decontamination Of Other Organic Pollutantsmentioning

confidence: 99%

“…[47,65] Zhu et al synthesized binary ZnFe-LDH/rGO (CLDH/ rGO) by using ahydrothermal method and modified it by calcination at 450 8Cu nder an itrogen atmosphere. [88] CLDH/rGO was studied for the elimination of paracetamol with different rGO content (CLDH/rGO10, CLDH/rGO30, CLDH/rGO50, and CLDH/rGO90). Figure 4A,B shows the photocatalytic degradation anda dsorption performance of paracetamolb ys erial CLDH/rGO composites.…”

Section: Decontamination Of Other Organic Pollutantsmentioning

confidence: 99%

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Recent Advances in Composites of Graphene and Layered Double Hydroxides for Water Remediation: A Review

Pang

Wang

et al. 2019

Chemistry An Asian Journal

159

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Composites of layered double hydroxides( LDHs) and graphene (G) are excitingn anomaterials because of their uniques urface structures and excellent physicochemical properties. Such materials offer the advantages of both components,t hat is, the large surfacea rea and ample functional groups of graphene and the outstanding layered structure and ion-exchangeability of layered double hydroxides, whilst effectively avoiding the coagulation of graphene and the instability of pristine layered double hydroxides,a nd they have been widelyi nvestigated for applications in water remediation. This Minireview begins by summarizing the most common methods for the synthesis of G@LDH composites, including hydrothermalt reatment, coprecipitation, and in situ growth. Then, we review the adsorption and catalytic ability of G@LDH materials in the removal of contaminants from water,s uch as heavy metal ions, radionuclides, dyes, and other organic pollutants. Finally,w ed iscusst he challenges and offer ap erspective on the directions of future research of G@LDH composites.

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“…A) Photocatalytic degradation and B) adsorption of paracetamolb ys erial LDH composites. [88] Chem. AsianJ .…”

Section: Decontamination Of Other Organic Pollutantsmentioning

confidence: 99%

Section: Decontamination Of Other Organic Pollutantsmentioning

confidence: 99%

Recent Advances in Composites of Graphene and Layered Double Hydroxides for Water Remediation: A Review

Pang

Wang

et al. 2019

Chemistry An Asian Journal

159

View full text Add to dashboard Cite

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“…Original La 3+ peak was at 834.4 eV 35 . O 1s peak at 530.9 eV was assigned to metal-oxide chemical bonds 18 . C 1s peaks at 285.0 and 289.0 eV were attibuted to C-C and C=O species 18,36 , indicating that adsorbed amaranth has been transformed into the carbon based material, which could also be proved by elemental mapping images.…”

Section: Ftirmentioning

confidence: 99%

“…O 1s peak at 530.9 eV was assigned to metal-oxide chemical bonds 18 . C 1s peaks at 285.0 and 289.0 eV were attibuted to C-C and C=O species 18,36 , indicating that adsorbed amaranth has been transformed into the carbon based material, which could also be proved by elemental mapping images. After photocatalytic process, binding energy peaks had positive shifts, the probable cause was interaction between Ibuprofen anions and CM-CLDH during reaction, increase of electronegativity promoted attraction between extranuclear electrons and nuclear, which led to augment of binding energy 35 .…”

Section: Ftirmentioning

confidence: 99%

“…Ju et al fabricated fullerence/ZnAlTi-LDO composites, unique electronic properties allowed fullerence to act as an ideal electron acceptor to maintain effective separation of photo-induced electrons and holes 17 . GO and rGO own long-range π-π conjugations, remarkable electron mobility and specific surface area 16,[18][19] , Zhu et al pointed out that the electron mediator rGO in rGO/ZnFe-CLDH composite was enabled to improve the migration of electron from conduct band of ZnO to value band of ZnFe 2 O 4 , and Ni et al argued that high work function of rGO caused movement of electron from value band of LDH to the surface of rGO 19 , the aforementioned behavior succeeded in suppressing the recombination of photogenerated charge carriers and leading to an improved photocatalytic efficiency 18 . Apart from graphene-like materials,…”

Section: Introductionmentioning

confidence: 99%

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Carbonaceous composite materials from calcination of azo dye-adsorbed layered doubled hydroxide with enhanced photocatalytic efficiency for removal of Ibuprofen in water

Shen

Zhu

Zhang

et al. 2020

Preprint

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Background: The discard of used adsorbents may pose a great threat to human health and ecological environment. This work herein reported a facile and feasible method, with aims of (i) reusing the calcined layered double hydroxide (CLDH) adsorbent after azo dye adsorption, and (ii) being further used as a photocatalyst to enhance the degradation of typical pharmaceuticals. Calcination under inner gas flow has been utilized to carbonize adsorbed azo dye and a kind of novel carbonaceous CLDH composite material (CM-CLDH) was synthesized. This fabricated material was used as a catalyst for Ibuprofen removal in water samples under simulated sunlight irradiation. Results: According to our experimental results, combination of carbonaceous material with CLDH showed an enhanced photocatalytic performance compared to original CLDH materials. More than 90 % of Ibuprofen could be removed in less than 180 min. Introduction of carbon material narrowed catalyst’s band gap and turned its conduct band potential to a more negative state, which brought considerable light absorption and higher oxidation ability of photo-induced electrons. Furthermore, photoluminescent spectra and transient photocurrent examination confirmed that carbon material suppressed recombination of photo-induced electrons and holes through faster electron transportation. Under experimental conditions, the removal efficiency of Ibuprofen by CM-CLDH composite kept above 90 % during five cycles. Conclusion: Calcination under inner gas flow can transform organic pollutant-adsorbed CLDH to CM-CLDH composite with higher photocatalytic performance. A feasible way to reuse spent LDH adsorbents was proposed, which is benefit to reduce second pollution of spent adsorbents in environment.

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Solar‐Inspired Water Purification Based on Emerging 2D Materials: Status and Challenges

et al. 2020

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Water shortage and the energy crisis are two major global challenges in this century. The solution for water crisis should be based on a sustainable energy source. Solar‐inspired water purification is an efficient and green technology for tackling the water challenge using abundant and clean solar energy through photothermal evaporation‐induced water production, photoinduced antimicrobial treatment, and photocatalytic degradation of organic contaminants. 2D nanomaterials draw significant attention for their use these three water‐purification methods because of their large surface area, broadband and strong absorption in the solar spectral range, and efficient photothermal and photocatalytic transformation. Herein, the recent development of 2D nanomaterials applied in photothermal evaporation, photoinduced antimicrobial treatment, and photocatalytic capability is comprehensively overviewed. Various strategies in enhancing the light‐absorption and light‐conversion efficiency for different 2D nanomaterials are presented. The challenges and perspectives of these 2D nanomaterials are further discussed for practical water purification. This Review highlights these green energy–driven water‐purification methods based on emerging 2D materials.

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Calcined layered double hydroxides/reduced graphene oxide composites with improved photocatalytic degradation of paracetamol and efficient oxidation-adsorption of As(III)

Cited by 120 publications

References 53 publications

Recent Advances in Composites of Graphene and Layered Double Hydroxides for Water Remediation: A Review

Recent Advances in Composites of Graphene and Layered Double Hydroxides for Water Remediation: A Review

Carbonaceous composite materials from calcination of azo dye-adsorbed layered doubled hydroxide with enhanced photocatalytic efficiency for removal of Ibuprofen in water

Solar‐Inspired Water Purification Based on Emerging 2D Materials: Status and Challenges

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