In2S3 nanoparticles dispersed on g-C3N4 nanosheets: role of heterojunctions in photoinduced charge transfer and photoelectrochemical and photocatalytic performance

Kokane, Sanjay B.; Sasikala, R.; Phase, D. M.; Sartale, Shrikrishna D.

doi:10.1007/s10853-017-0940-x

Cited by 57 publications

(17 citation statements)

References 61 publications

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“…Among them, the widely studied metal chalcogenides have been reported to be a group of highly efficient catalysts for PEC water splitting . In particular, as a typical III–VI main group chalcogenide, indium sulfide (In 2 S 3 ) has been used as an n-type semiconductor with a relatively narrow band gap of 2–2.45 eV which favors the visible-light absorption photocatalysis applied in photovoltaics, solar cells, and PEC water splitting. − In general, a defective compound of the formulation M 2 X 3 can be considered as a compound derived from II–VI semiconductor by replacing the Group II metals by Group III elements. That is, in the crystalline structure of In 2 S 3 , the sulfide forms a cubic or hexagonal close-packed structure in which part of the cation sites remain empty .…”

Section: Introductionmentioning

confidence: 99%

“…13 More importantly, the plentiful traits of In 2 S 3 for relatively narrow band gap of 2−2.45 eV which could broaden the light response to visible region, good conductivity due to the presence of the cation or anion vacancies, 14 stable chemical composition, and a comparatively negative conduction band edge corresponding to H + /H 2 as well as moderate charge transport make it a promising photoanode. 11 It is usually adopted as sensitizer to establish heterostructures such as In 2 S 3 /g-C 3 N 4 , 9 In 2 S 3 /ZnO, 15 and In 2 S 3 /MoS 2 . 16 However, there are few reports involving crystal phase control of In 2 S 3 as well as the investigation of PEC performance of pristine In 2 S 3 structures.…”

Section: ■ Introductionmentioning

confidence: 99%

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Efficient Indium Sulfide Photoelectrode with Crystal Phase and Morphology Control for High-Performance Photoelectrochemical Water Splitting

Chen

Liu

2018

ACS Sustainable Chem. Eng.

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Crystal phase control of materials plays an important role on their properties in photocatalysis and photoelectrocatalysis. Herein, cubic and tetragonal phase control of In2S3 photoanodes with various morphologies on indium tin oxide transparent conductive glass substrate have been successfully realized through a simple hydrothermal method for the first time. According to the detailed characterization analysis, we proposed a model to interpret the phase transition of In2S3 along with hydrothermal reaction time. The photoelectrochemical tests suggest that the cubic phase In2S3 nanocubes with cuneiform morphology exhibit a photocurrent density of 0.50 mA/cm2 at 1.23 V vs RHE benefit by the special structure for efficient charge separation and transfer. This is the highest photocurrent values of single In2S3 crystals best to our knowledge. Furthermore, the photoelectrochemical performance of In2S3 can be greatly improved by depositing a Co–Pi cocatalysts layer. The composites show a 1.36-fold increase of photocurrent density (0.68 mA/cm2 at 1.23 V vs RHE) compared to that of pristine In2S3. This work highlights that In2S3 can be an attractive candidate as photoanodes for photoelectrochemical water splitting, and the crystal phase control presents a new avenues to the exploration and design of photoelectrodes for realizing superior performances.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Efficient Indium Sulfide Photoelectrode with Crystal Phase and Morphology Control for High-Performance Photoelectrochemical Water Splitting

Chen

Liu

2018

ACS Sustainable Chem. Eng.

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“…The peaks located at 444.8 eV and 452.3 eV can be assigned to In 3d 5/2 and In 3d 3/2 , respectively, in the In 2 S 3 lattice. While, there is a additional satellite peak at 442.2 eV, presenting the existence of reduced indium element . As shown in Figure F, the peak at 161.6 eV is ascribed to S 2p .…”

Section: Resultsmentioning

confidence: 58%

“…In this function, n=1 for direct transition, while n=4 for indirect transition. BiVO 4 is a direct transition semiconductor, while In 2 S 3 is an indirect transition semiconductor ,. From K−M plot, the band gap energy of BiVO 4 and In 2 S 3 are estimated to be 2.4 eV and 2.14 eV, respectively.…”

Section: Resultsmentioning

confidence: 99%

Au‐Mediated Composite In₂S₃–Au–BiVO₄ with Enhanced Photocatalytic Activity for Organic Pollutant Degradation

Bao

Wang

et al. 2018

ChemistrySelect

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A ternary composite photocatalyst In2S3–Au–BiVO4 was fabricated by stepwise photo‐reduction and deposition−precipitation methods. It was found that the Au nanoparticles (NPs) were selectively anchored on the {010} facets of decahedral BiVO4 crystals due to the oriented accumulation of electrons during the photo‐reduction stage. Based on the strong interaction between S−Au, In2S3 was loaded on the surface of Au NPs on BiVO4 {010} facets. Photocatalytic degradations of organic contaminants Rhodamine B and phenol indicated that In2S3–Au–BiVO4 showed evidently improved visible light photocatalytic activity than BiVO4, Au–BiVO4, and In2S3–BiVO4. On the basis of the photoelectrochemical and photoluminescence (PL) analyses, it can be inferred that the facet hetero‐juction and Au‐mediated composite structures of In2S3–Au–BiVO4 can improve the separation efficiency of photo‐generated carriers as well as make the carriers keep higher redox ability. The radical trapping experiments indicated that for In2S3–Au–BiVO4, •OH, h+, and •O2− are the main reactive species which take part in the organic contaminant degradation.

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“…On further investigation at a higher magnification in figure 2 (e), two distinct structures attributed to C3N4 were perceived. The 2D layers of conjugated sheet of tri-s-triazine specifies the interlayer stacking distance of 0.329 nm -0.333 nm, and corresponds to the (002) plane of 2θ = 26.6˚ denoted as C3N4 structure [42]. Apart from that, the amorphous structure of C3N4 was also observed which displayed as a corrugated structure [30].…”

Section: Transmission Electron Microscope (Tem) Analysismentioning

confidence: 99%

Crystalline C₃N₄/CeO₂composites as photocatalyst for hydrogen production in visible light

Saman

Bahruji

Mahadi

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Crystalline carbon nitride (C-C3N4) doped with cerium oxide (CeO2) was synthesized using ionothermal method to increase the photocatalytic activity for H2 production. Graphitic carbon nitride (g-C3N4) obtained from direct pyrolysis of urea at 550°C was subsequently annealed with a mixture of KCl and LiCl to obtain C-C3N4. CeO2 was doped onto C-C3N4 and g-C3N4 via calcination at 550°C. XRD analysis showed the formation of high intensity C3N4 and CeO2 peaks in C-C3N4/CeO2, meanwhile g-C3N4/CeO2 only showed CeO2 peaks. FTIR analysis confirmed all the samples contained C3N4 polymeric structure. The specific surface area of g-C3N4 was measured at 61 m2/g. The surface area increased to 92 m2/g when g-C3N4 transformed into C-C3N4, and further increased to 106 m2/g on C-C3N4/CeO2. The photocatalytic activity for H2 gas production showed significant increase of H2 rate on C-C3N4/CeO2 compared to g-C3N4/CeO2 and g-C3N4. The high crystallinity and high surface area were suggested to enhance photocatalytic activity of C-C3N4/CeO2 in visible light presumably due to the increase of electron and hole lifetimes.

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In2S3 nanoparticles dispersed on g-C3N4 nanosheets: role of heterojunctions in photoinduced charge transfer and photoelectrochemical and photocatalytic performance

Cited by 57 publications

References 61 publications

Efficient Indium Sulfide Photoelectrode with Crystal Phase and Morphology Control for High-Performance Photoelectrochemical Water Splitting

Efficient Indium Sulfide Photoelectrode with Crystal Phase and Morphology Control for High-Performance Photoelectrochemical Water Splitting

Au‐Mediated Composite In₂S₃–Au–BiVO₄ with Enhanced Photocatalytic Activity for Organic Pollutant Degradation

Crystalline C₃N₄/CeO₂composites as photocatalyst for hydrogen production in visible light

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In2S3 nanoparticles dispersed on g-C3N4 nanosheets: role of heterojunctions in photoinduced charge transfer and photoelectrochemical and photocatalytic performance

Cited by 57 publications

References 61 publications

Efficient Indium Sulfide Photoelectrode with Crystal Phase and Morphology Control for High-Performance Photoelectrochemical Water Splitting

Efficient Indium Sulfide Photoelectrode with Crystal Phase and Morphology Control for High-Performance Photoelectrochemical Water Splitting

Au‐Mediated Composite In2S3–Au–BiVO4 with Enhanced Photocatalytic Activity for Organic Pollutant Degradation

Crystalline C3N4/CeO2composites as photocatalyst for hydrogen production in visible light

Contact Info

Product

Resources

About

Au‐Mediated Composite In₂S₃–Au–BiVO₄ with Enhanced Photocatalytic Activity for Organic Pollutant Degradation

Crystalline C₃N₄/CeO₂composites as photocatalyst for hydrogen production in visible light