Low temperature one-step synthesis of rutile TiO 2 /BiOCl composites with enhanced photocatalytic activity

Duo, Fangfang; Wang, Yawen; Fan, Caimei; Mao, Xiaoming; Zhang, Xiaochao; Wang, Yunfang; Liu, Jianxin

doi:10.1016/j.matchar.2014.11.002

Cited by 69 publications

(16 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 6b displays the FTIR spectra of BiOCl, 30mM-30min-BiOCl and 120mM-30min-BiOCl. A strong absorption peak at 525 cm −1 and a weak absorption peak at 431 cm −1 are observed for pristine BiOCl, which are characterized as the FTIR vibration peaks featured in BiOCl crystals [61]. The BiOCl characteristic peaks decrease in intensity for 30mM-30min-BiOCl, and disappear for 120mM-30min-BiOCl.…”

Section: Catalysts 2019 9 X For Peer Review 3 Of 21mentioning

confidence: 97%

NaBH4-Reduction Induced Evolution of Bi Nanoparticles from BiOCl Nanoplates and Construction of Promising Bi@BiOCl Hybrid Photocatalysts

Yan

Yang

et al. 2019

Catalysts

View full text Add to dashboard Cite

In this work, we have synthesized BiOCl nanoplates (diameter 140–220 nm, thickness 60–70 nm) via a co-precipitation method, and then created Bi nanoparticles (diameter 35–50 nm) on the surface of BiOCl nanoplates via a NaBH4 reduction method. By varying the NaBH4 concentration and reaction time, the evolution of Bi nanoparticles was systematically investigated. It is demonstrated that with increasing the NaBH4 concentration (at a fixing reaction time of 30 min), BiOCl crystals are gradually reduced into Bi nanoparticles, and pure Bi nanoparticles are formed at 120 mM NaBH4 solution treatment. At low-concentration NaBH4 solutions (e.g., 10 and 30 mM), with increasing the reaction time, BiOCl crystals are partially reduced into Bi nanoparticles, and then the Bi nanoparticles return to form BiOCl crystals. At high-concentration NaBH4 solutions (e.g., 120 mM), BiOCl crystals are reduced to Bi nanoparticles completely with a short reaction time, and further prolong the treatment time leads to the transformation of the Bi nanoparticles into a two-phase mixture of BiOCl and Bi2O3 nanowires. The photodegradation performances of the samples were investigated by choosing rhodamine B (RhB) as the model pollutant and using simulated sunlight as the light source. It is demonstrated that an enhanced photodegradation performance can be achieved for the created Bi@BiOCl hybrid composites with appropriate NaBH4 treatment. The underlying photocatalytic mechanism was systematically investigated and discussed.

show abstract

Section: Catalysts 2019 9 X For Peer Review 3 Of 21mentioning

confidence: 97%

NaBH4-Reduction Induced Evolution of Bi Nanoparticles from BiOCl Nanoplates and Construction of Promising Bi@BiOCl Hybrid Photocatalysts

Yan

Yang

et al. 2019

Catalysts

View full text Add to dashboard Cite

show abstract

“…So far, pure TiO 2 /BiOCl composites have been reported with enhanced UV-light PC activity [16][17][18][19][20][21][22]. For example, Wang and Fan et al have prepared pure rutile TiO 2 /BiOCl composites by a one-step hydrolysis method and studied their PC activities under artificial solar light irradiation by using 500 W Xe lamp without UV cutoff filter [17]. Zhang et al assembled hierarchical heterostructure based on BiOCl nanosheets and bicrystalline TiO 2 nanofiber frameworks by combining the electrospinning technique and solvothermal method [18].…”

Section: Introductionmentioning

confidence: 99%

Enhanced photocatalytic and photoelectrochemical activities of reduced TiO2−x/BiOCl heterojunctions

Fu¹,

Zeng²,

Ma³

et al. 2016

Journal of Power Sources

View full text Add to dashboard Cite

A key issue to design highly efficient photoelectrodes for hydrogen production is how to prohibit the rapid carrier recombination. In order to use the visible light and reduce the recombination of electrons and holes, reduced TiO 2-x /BiOCl heterojunctions are successfully synthesized and the photoelectrodes are assembled in this work. The effects of various Bi/Ti molar ratios on the structural, morphological, optical, photoelectrochemical and photocatalytic activities of the resultant samples are investigated systematically. The TiO 2-x nanoparticles contain Ti 3+ , Ti 2+ , and oxygen vacancies (Ov), while the BiOCl nanosheets exposed {001} facet. Ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS) results indicate that the existence of Ti 3+ , Ti 2+ and Ov expand the light-response range. Linear scan voltammetry and electrochemical impedance spectroscopy results indicate that more efficient electron transportation is presented in the heterojunctions with the appropriate Bi/Ti molar ratio. Consequently, the reduced TiO 2-x /BiOCl heterojunction with the most appropriate Bi/Ti molar ratio exhibits a high

show abstract

“…When forming heterojunction of p-BiOCl/n-TiO 2 , there would result in a strong internal electric field which facilitates the reducing probability of recombination of photogenerated charge carriers. So far, heterojunctions of BiOCl/TiO 2 nanoparticles have been widely reported with enhanced UV-light photocatalytic activity [16][17][18], but the suspended nanoparticles are easily lost in the process of separation and recycling. Therefore, how to construct the heterojunction of pBiOCl/n-TiO 2 with both high photocatalytic activity and favorable recycling characteristics is of great importance.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical heterostructures of p-type BiOCl nanosheets on electrospun n-type TiO2 nanofibers with enhanced photocatalytic activity

Wang

Shao

et al. 2015

Catalysis Communications

View full text Add to dashboard Cite

Low temperature one-step synthesis of rutile TiO 2 /BiOCl composites with enhanced photocatalytic activity

Cited by 69 publications

References 58 publications

NaBH4-Reduction Induced Evolution of Bi Nanoparticles from BiOCl Nanoplates and Construction of Promising Bi@BiOCl Hybrid Photocatalysts

NaBH4-Reduction Induced Evolution of Bi Nanoparticles from BiOCl Nanoplates and Construction of Promising Bi@BiOCl Hybrid Photocatalysts

Enhanced photocatalytic and photoelectrochemical activities of reduced TiO2−x/BiOCl heterojunctions

Hierarchical heterostructures of p-type BiOCl nanosheets on electrospun n-type TiO2 nanofibers with enhanced photocatalytic activity

Contact Info

Product

Resources

About