Experimental and theoretical investigation into the elimination of organic pollutants from solution by layered double hydroxides

Liu, Xin; Zhao, Xiaofei; Zhu, Yihua; Zhang, Fazhi

doi:10.1016/j.apcatb.2013.04.008

Cited by 51 publications

(23 citation statements)

References 61 publications

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“…In addition, many articles reported that theoretical calculation based on density functional theory (DFT) analysis could further investigate the structural stability of host layers of LDHs using cluster models. It would explain the difference of photocatalytic performance of those LDH materials (Liu et al, 2013). Based on the above mentioned idea, in this paper we synthesized four types of CuMgM layered double hydroxides (M = Al, Cr, Fe, Ce) by two different methods.…”

Section: Introductionmentioning

confidence: 99%

The photocatalytic property for water splitting and the structural stability of CuMgM layered double hydroxides (M=Al, Cr, Fe, Ce)

Xia

Zhang

Zhou

et al. 2015

Applied Clay Science

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Section: Introductionmentioning

confidence: 99%

The photocatalytic property for water splitting and the structural stability of CuMgM layered double hydroxides (M=Al, Cr, Fe, Ce)

Xia

Zhang

Zhou

et al. 2015

Applied Clay Science

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“…In addition, the characteristic absorption peaks of C=N bonds and -COO-groups in the IR spectra of ZnCr-0.75SalenCo-LDHs (d) and ZnCr-0.75SalenNi-LDHs (e) were similar to those of SalenM (e). Meanwhile, a series of absorption peaks appearing in the IR spectra of 400-800 cm −1 may correspond to the lattice vibrations of Zn-O, Cr-O bonds derived from LDHs and the stretching vibrations of Co-O, Ni-O, Co-N, Ni-N bonds derived from SalenM [33,34]. Based on the above results, we can further infer that SalenM have successfully entered the LDHs interlayer.…”

Section: Introductionmentioning

confidence: 59%

Preparation of Salen–Metal Complexes (Metal = Co or Ni) Intercalated ZnCr-LDHs and Their Photocatalytic Degradation of Rhodamine B

et al. 2017

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Salen-metal complexes (SalenM) were successfully intercalated into ZnCr layered double hydroxides (LDHs) through coprecipitation method, then a series of novel organic-inorganic hybrid materials were obtained. The structure and properties of the materials were thoroughly characterized by inductively-coupled plasma atomic emission spectrometry (ICP-AES), powder X-ray diffraction (XRD), Fourier transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), and ultraviolet visible diffuse reflectance spectroscopy (UV-Vis DRS). Meanwhile, with Rhodamine B (RhB) as a target contaminant, the photocatalytic activities of SalenM-intercalated ZnCr-LDHs were investigated and compared with the traditional LDHs (ZnCr-LDHs, ZnCoCr-LDHs, and ZnNiCr-LDHs). Furthermore, the effect of the intercalation amount of SalenM (M = Co or Ni) on the photocatalytic activity was studied. The results showed that when the molar ratio of SalenM to Cr was 0.75, SalenM-intercalated ZnCr-LDHs exhibited significantly higher photocatalytic activities than the traditional LDHs. The degradation rates of RhB reached about 90%, and all of them had good recycling rates. In addition, the kinetics of photocatalytic process and the mechanism of photocatalysis are discussed.

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“…By adjusting the metal ions in the LDH Hence, effi cient electronic coupling between the component nanosheets was achieved. [ 30 ] Other LDH-based composite photocatalysts developed to date include LDH/POM, [ 53 ] LDH/ CdS, [54][55][56][57] TiO 2 @LDH, [ 46 ] Fe 2 O 3 @LDH [ 58 ] and LDH/Ag, [ 59 ] all of which feature an improved visible light absorption and reported that mesoporous nanohybrids consisting of positively charged ZnCr-LDH nanosheets and negatively charged TiO 2 nanosheets or graphene showed two strong absorption peaks in the visible light range, which can be attributed to the d-d transitions of the Cr ions in ZnCr-LDH nanosheets. Reproduced with permission.…”

Section: Optical Propertiesmentioning

confidence: 99%

Layered Double Hydroxide Nanostructured Photocatalysts for Renewable Energy Production

Zhao

Jia

Waterhouse

et al. 2015

Advanced Energy Materials

419

231

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An enormous research effort is currently being directed towards the development of efficient visible‐light‐driven photocatalysts for renewable energy applications including water splitting, CO2 reduction and alcohol photoreforming. Layered double hydroxide (LDH)‐based photocatalysts have emerged as one of the most promising candidates to replace TiO2‐based photocatalysts for these reactions, owing to their unique layered structure, compositional flexibility, controllable particle size, low manufacturing cost and ease of synthesis. By introducing defects into LDH materials through the control of their size to the nanoscale, the atomic structure, surface defect concentration, and electronic and optical characteristics of LDH materials can be strategically engineered for particular applications. Furthermore, through the use of advanced characterization techniques such as X‐ray absorption fine structure, positron annihilation spectrometry, X‐ray photoelectron spectroscopy, electron spin resonance, density‐functional theory calculations, and photocatalytic tests, structure‐activity relationships can be established and used in the rational design of high‐performance LDH‐based photocatalysts for efficient solar energy capture. LDHs thus represent a versatile platform for semiconductor photocatalyst development with application potential across the energy sector.

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Experimental and theoretical investigation into the elimination of organic pollutants from solution by layered double hydroxides

Cited by 51 publications

References 61 publications

The photocatalytic property for water splitting and the structural stability of CuMgM layered double hydroxides (M=Al, Cr, Fe, Ce)

The photocatalytic property for water splitting and the structural stability of CuMgM layered double hydroxides (M=Al, Cr, Fe, Ce)

Preparation of Salen–Metal Complexes (Metal = Co or Ni) Intercalated ZnCr-LDHs and Their Photocatalytic Degradation of Rhodamine B

Layered Double Hydroxide Nanostructured Photocatalysts for Renewable Energy Production

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