New Method to Synthesize S-Doped TiO<sub>2</sub> with Stable and Highly Efficient Photocatalytic Performance under Indoor Sunlight Irradiation

Zhu, Mingshan; Zhai, Chunyang; Qiu, Liqun; Lü, Cheng; Paton, Andrew S.; Du, Yukou; Goh, M. Cynthia

doi:10.1021/acssuschemeng.5b01137

Cited by 140 publications

(53 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The application of TiO 2 as a classic semiconductor photocatalyst has been studied for a long time. 1 Recently, a new metal-free semiconductor graphic carbon nitride (g-C 3 N 4 ) has been identied as a potential photocatalyst under visible-light illumination 2,3 for various processes including hydrogen evolution from water splitting, 4 CO 2 reduction into hydrocarbon fuels, 5 organic compounds degradation, 6 and so on. The reason for the popularity of g-C 3 N 4 among many scholars is its high chemical stability and appealing electronic structure.…”

Section: Introductionmentioning

confidence: 99%

Graphitic carbon nitride nanosheets obtained by liquid stripping as efficient photocatalysts under visible light

Fan

Miao

et al. 2017

RSC Adv.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Graphitic carbon nitride nanosheets obtained by liquid stripping as efficient photocatalysts under visible light

Fan

Miao

et al. 2017

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…Therefore, the bandgap energy of the NTO, C‐NTO, and S‐NTO is 3.7, 3.49, and 2.12 eV, respectively (Figure b). The bandgap narrowing is ascribed to the doping of S atoms into the lattice of Na 2 Ti 3 O 7 , which could reduce the electron transition energy from the valence to the conduction band and thus induce an obvious shift in the absorption edge to lower energy . These changes are also reflected in the colors of the samples.…”

mentioning

confidence: 99%

Boosting Sodium Storage of Double‐Shell Sodium Titanate Microspheres Constructed from 2D Ultrathin Nanosheets via Sulfur Doping

Wang

Liao

et al. 2018

Advanced Materials

View full text Add to dashboard Cite

with abundant natural resources, much lower cost, and ubiquitous presence around the globe. Therefore, sodiumion batteries (SIBs) are expected to be the most promising candidates as nextgeneration batteries. [1,2] The commercial LIB anode (graphite), however, exhibits extremely poor sodium storage (capacity of only 31 mAh g −1 ) in ester-based electrolytes, and has a low insertion voltage (close to 0 V, which easily causes sodium plating and arouses safety concerns), which largely restricts it in practical use in SIBs. [2][3][4] Alloying and conversion-type materials also suffer from huge volume changes during cycling that will lead to electrode pulverization and thus capacity fading. [5][6][7] Therefore, searching for suitable anodes with high capacity, long cycling stability, and high rate capability is the critical issue for bringing SIBs into practical application.As a typical Ti-based compound, sodium titanate (Na 2 Ti 3 O 7 ) comprises zigzag layers of titanium and oxygen octahedral, where 3.5 Na ions per formula unit can be easily inserted into the interlayer space, resulting in a capacity of 310 mAh g −1 . [8] In addition, Na 2 Ti 3 O 7 displays the lowest average Na intercalation potential (0.3 V for Na + insertion, but above the voltage for the formation of Na dendrites) compared to the reported insertion-type oxides, which is beneficial for achieving high operating voltage and energy density in full batteries. [9,10] In particular, the large interlayered spacing of ≈0.83 nm is favorable for the charge storage properties and the diffusion of electrolyte ions. [11][12][13][14] Notwithstanding, there are still some shortcomings of Na 2 Ti 3 O 7 anode [15][16][17][18][19] : i) the low electronic conductivity caused by the large bandgap (3.7 eV) results in ineffective charge transport and thus limits the rate performance of SIBs; [8][9][10][11] ii) the aggregation and overlapping of Na 2 Ti 3 O 7 layers due to the large surface energy leads to fast capacity decay during Na + insertion/extraction; [15] and iii) the stability and lifetime concerns aroused by the volume expansion upon Na uptake are still an obstacle to the use of Na 2 Ti 3 O 7 in large-scale SIB application. [8] To address these issues, a series of effective strategies have been developed, including widening the interlayer spacing of Na 2 Ti 3 O 7 , [16] regulating the morphology on the nanoscale, [8,10,12] and using carbonaceous materials as a conductive matrix. [14,17] Sodium-ion batteries (SIBs) have drawn remarkable attention due to their low cost and the practically inexhaustible sodium sources. The major obstacle for the practical application of SIBs is the absence of suitable negative electrode materials with long cycling stability and high rate performance. Here, sulfur-doped double-shell sodium titanate (Na 2 Ti 3 O 7 ) microspheres constructed from 2D ultrathin nanosheets are synthesized via a templating route combined with a low-temperature sulfurization process. The resulting double-shell microspheres deliver a high specific capaci...

show abstract

“…Some recent studies in the literature reported that DMSO can slowly release S À2 ions into solution for the synthesis of S-based materials at ac ertain temperature. [24][25][26][27]29] Moreover, graphene oxide (GO) can be easily converted to reduced graphene oxide (RGO) by using as olvothermal method. Accordingly,u nder the conditions used herein,D MSO was not only used as the solventi nt he solvothermal process, but also acted as source of sulfur during the reaction, which resulted in CdS nanoclustersh ybridized with RGO nanosheets.…”

Section: Resultsmentioning

confidence: 99%

High‐Performance Visible‐Light‐Driven Pt/CdS/Graphene Photoelectrocatalysts for Methanol Oxidation

Zhai

Sun

et al. 2017

Energy Tech

Self Cite

View full text Add to dashboard Cite

Fuel cells, as a technology for the conversion of chemical energy into electrical energy, have been recognized as a promising sustainable power source. Traditional electrocatalysts, together with optically active semiconductors, have been selected as promising catalysts for the improvement of anodic reactions. Herein, cadmium sulfide (CdS) nanoclusters decorated on reduced graphene oxide (RGO) nanosheets were obtained by using a one‐pot solvothermal method and then applied as photoactivated supports for the deposition of Pt nanoparticles. The ternary‐composite‐modified electrode displayed much higher catalytic properties for methanol oxidation than a binary Pt/CdS electrode. Interestingly, when the as‐prepared Pt/CdS/RGO electrode was irradiated with visible light, both the catalytic activity and the stability were improved greatly. The synergistic effect of RGO nanosheets and photoirradiation promoted electrocatalytic performance and stability. Our results provide new insight into the development of highly efficient photoelectrocatalysts for applications in direct methanol fuel cells in the presence of visible‐light illumination.

show abstract

New Method to Synthesize S-Doped TiO₂ with Stable and Highly Efficient Photocatalytic Performance under Indoor Sunlight Irradiation

Cited by 140 publications

References 21 publications

Graphitic carbon nitride nanosheets obtained by liquid stripping as efficient photocatalysts under visible light

Graphitic carbon nitride nanosheets obtained by liquid stripping as efficient photocatalysts under visible light

Boosting Sodium Storage of Double‐Shell Sodium Titanate Microspheres Constructed from 2D Ultrathin Nanosheets via Sulfur Doping

High‐Performance Visible‐Light‐Driven Pt/CdS/Graphene Photoelectrocatalysts for Methanol Oxidation

Contact Info

Product

Resources

About

New Method to Synthesize S-Doped TiO2 with Stable and Highly Efficient Photocatalytic Performance under Indoor Sunlight Irradiation

Cited by 140 publications

References 21 publications

Graphitic carbon nitride nanosheets obtained by liquid stripping as efficient photocatalysts under visible light

Graphitic carbon nitride nanosheets obtained by liquid stripping as efficient photocatalysts under visible light

Boosting Sodium Storage of Double‐Shell Sodium Titanate Microspheres Constructed from 2D Ultrathin Nanosheets via Sulfur Doping

High‐Performance Visible‐Light‐Driven Pt/CdS/Graphene Photoelectrocatalysts for Methanol Oxidation

Contact Info

Product

Resources

About

New Method to Synthesize S-Doped TiO₂ with Stable and Highly Efficient Photocatalytic Performance under Indoor Sunlight Irradiation