Preparation of ZnIn2S4/K2La2Ti3O10 composites and their photocatalytic H2 evolution from aqueous Na2S/Na2SO3 under visible light irradiation

Cui, Wenquan; Guo, Dongmei; Liu, Li; Hu, Jinshan; Rana, Dipak; Liang, Yinghua

doi:10.1016/j.catcom.2014.01.026

Cited by 75 publications

(18 citation statements)

References 21 publications

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“…The XRD pattern of ZnIn 2 S 4 could be indexed as the hexagonal structure (JCPDS number 65-2023). The four diffraction peaks at around 20.8 • , 27.5 • , 47.2 • , and 55.9 • could be assigned to the (006), (101), and (110) and (202) planes, respectively [38,39]. The XRD patterns of other composition ratio of Zn (1−2x) (CuGa) x In 2 S 4 also showed the similar results.…”

Section: Structural Characterizationsupporting

confidence: 58%

The Effect of Cu and Ga Doped ZnIn2S4 under Visible Light on the High Generation of H2 Production

et al. 2019

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A Cu+ and Ga3+ co-doped ZnIn2S4 photocatalyst (Zn(1−2x)(CuGa)xIn2S4) with controlled band gap was prepared via a simple one-step solvothermal method. Zn(1−2x)(CuGa)xIn2S4 acted as an efficient photocatalyst for H2 evolution under visible light irradiation (λ > 420 nm; 4500 µW/cm2). The effects of the (Cu and Ga)/Zn molar ratios of Zn(1−2x)(CuGa)xIn2S4 on the crystal structure (hexagonal structure), morphology (microsphere-like flower), optical property (light harvesting activity and charge hole separation ability), and photocatalytic activity have been investigated in detail. The maximum H2 evolution rate (1650 µmol·h−1·g−1) was achieved over Zn0.84(CuGa)0.13In2S4, showing a 3.3 times higher rate than that of untreated ZnIn2S4. The bandgap energy of Zn(1−2x)(CuGa)xIn2S4 decreased from 2.67 to 1.90 eV as the amount of doping Cu+ and Ga3+ increased.

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Section: Structural Characterizationsupporting

confidence: 58%

The Effect of Cu and Ga Doped ZnIn2S4 under Visible Light on the High Generation of H2 Production

et al. 2019

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“…The main factors determining high efficiency of modern photocatalysts include narrowing of the bandgap into the visible light region, achieving high surface areas, crystallinity, a large number of catalytic sites and in addition realization of efficient charge separation. In accordance with these objectives, different approaches in preparation and modification of the catalysts have been applied, including cationic and anionic substitution and doping (Zou et al, 2001;Reddy et al, 2003;Kumar et al, 2011;Zhou et al, 2016;Kawashima et al, 2017), sensitization with dyes (Youngblood et al, 2009), intercalation of metals and other inorganic particles (Huang et al, 2006(Huang et al, , 2009 as well as preparation of composites with other materials (Cui et al, 2012(Cui et al, , 2013(Cui et al, , 2014Saito et al, 2016;Liu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Study of n-alkylamine Intercalated Layered Perovskite-Like Niobates HCa2Nb3O10 as Photocatalysts for Hydrogen Production From an Aqueous Solution of Methanol

et al. 2020

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A series of hybrid niobates HCa 2 Nb 3 O 10 ×RNH 2 , containing n-alkylamines (R = Me, Et, Pr, Bu, Hx, Oc) intercalated into the interlayer space, has been thoroughly studied concerning the photocatalytic hydrogen production from a model aqueous solution of methanol for the first time. All the hybrid photocatalysts were synthesized by the conventional ceramic technique followed by protonation and intercalation of nalkylamines. The products were characterized using XRD, Raman, IR and diffuse reflectance spectroscopy, TGA, CHN-analysis and SEM. Photocatalytic measurements were conducted according to an advanced scheme taking into account possible changes in the photocatalyst concentration because of sedimentation, pH shifts and exfoliation of the samples into nanoplatelets. Special attention was also paid to the feasible improvement of the photocatalytic activity of the samples via their modification with Pt nanoparticles as a cocatalyst. In the series of amine derivatives, the highest rate of hydrogen generation was demonstrated by the Pt-loaded HCa 2 Nb 3 O 10 ×BuNH 2 reaching apparent quantum efficiency of 13% in the 220-340 nm range. The initial HCa 2 Nb 3 O 10 showed comparable efficiency of 8.3% that is greater than for other amine derivatives. It was demonstrated that for the investigated samples the photocatalytic activity correlates with their ability of water intercalation.

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“…Since photocatalysts should be capable of absorbing visible light, have a large number of active catalytic sites and also support mechanisms for the efficient charge separation, different attempts have been made to modify layered oxides by cationic and anionic substitution and doping (Zou et al, 2001;Reddy et al, 2003;Kumar et al, 2011;Zhou et al, 2016;Kawashima et al, 2017a), sensitization with dyes (Youngblood et al, 2009), intercalation of metals or other inorganic particles (Huang et al, , 2009 and also the creation of composites with other materials (Cui et al, 2012(Cui et al, , 2013(Cui et al, , 2014Liu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Layered Titanate H2Nd2Ti3O10 Intercalated With n-Butylamine: A New Highly Efficient Hybrid Photocatalyst for Hydrogen Production From Aqueous Solutions of Alcohols

et al. 2019

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A layered perovskite-type oxide intercalated with n-butylamine is reported as an efficient photocatalyst for hydrogen production from aqueous solutions of alcohols for the first time. The hybrid photocatalyst H 2 Nd 2 Ti 3 O 10 ×BuNH 2 was synthesized by solid-state ceramic method followed by protonation, intercalation of methylamine and subsequent substitution by n-butylamine. The product was characterized by powder XRD, TGA, STA-MS, DRS, IR, and Raman spectroscopy, CHN analysis, SEM. Intercalation of n-butylamine caused a dramatic increase in photocatalytic activity of H 2 Nd 2 Ti 3 O 10 in the reaction of hydrogen evolution from aqueous solutions of methanol, ethanol, and n-butanol under UV radiation. While the non-intercalated Pt-loaded H 2 Nd 2 Ti 3 O 10 showed a maximum quantum efficiency of only 2% in the 220-340 nm range, the efficiency for hybrid samples reached 23% under the same conditions and after variation of experimental parameters even 52% efficiency was achieved. This effect may be associated with the significant expansion of the interlayer space, which is considered as a separate reaction zone.

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Preparation of ZnIn2S4/K2La2Ti3O10 composites and their photocatalytic H2 evolution from aqueous Na2S/Na2SO3 under visible light irradiation

Cited by 75 publications

References 21 publications

The Effect of Cu and Ga Doped ZnIn2S4 under Visible Light on the High Generation of H2 Production

The Effect of Cu and Ga Doped ZnIn2S4 under Visible Light on the High Generation of H2 Production

Study of n-alkylamine Intercalated Layered Perovskite-Like Niobates HCa2Nb3O10 as Photocatalysts for Hydrogen Production From an Aqueous Solution of Methanol

Layered Titanate H2Nd2Ti3O10 Intercalated With n-Butylamine: A New Highly Efficient Hybrid Photocatalyst for Hydrogen Production From Aqueous Solutions of Alcohols

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