Microwave Synthesis of Cu/Cu2O/SnO2 Composite with Improved Photocatalytic Ability Using SnCl4 as a Protector

Chen, Rui; Lü, Juan; Wang, Zuoshan; Zhou, Qingqing; Zheng, Min

doi:10.1007/s10853-018-2261-0

Cited by 14 publications

(11 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be found that the main peaks for all the samples are centered around 570.0 eV. The peak position was in accordance with that reported for Cu(I) species, 19,20 Thus, the following investigations of using these samples as photocatalysts were performed. Considering that MO is a dye compound, a reviewer pointed out that the dye sensitization effect could be responsible for the photocatalytic performance of the samples.…”

Section: Methodssupporting

confidence: 85%

Construction of a Highly-Dispersed and Efficient Charge-Separation–Transferring Interface by Oxidatively-Bonding Rh in Cu₂O Surface for Dye Photodegradation

Xiu-rong

Zhao

et al. 2019

J. Phys. Chem. C

View full text Add to dashboard Cite

Deliberately modulating the surface structure of oxide semiconductor materials was crucial to improve their photoelectronic conversion performance. Here, surface engineering of a Cu 2 O-based semiconductor (cubic particles in an average size of 300 nm) by redox embedding Rh with RhCl 63− was attempted to get a series of Rh−Cu 2 O catalysts, and their photocatalytic properties were typically surveyed from dye (methyl orange, MO) photodegradation. With comprehensive characterizations, it was demonstrated that the highly dispersed and tightly integrated Rh−Cu 2 O interface, featuring oxidatively bonded Rh in surface layers of the Cu 2 O substrate, was well constructed by adjusting Rh loading from 0.04 to 0.38 wt %, exhibiting an obvious enhancement in photocatalytic performance for MO degradation compared to bare Cu 2 O. The measurements from photoproduction of H 2 , photocurrent, electrochemical impedance, and scavengers-present tests further illuminated that the Rh species bonded on the Cu 2 O surface in an electron-deficiency state and greatly contributed to not only improving separation efficiency of photogenerated electron/hole pairs, but also lowering the resistance to speed charge transferring along the Rh−Cu 2 O interface, resulting in the enhanced photocatalytic performance of Rh−Cu 2 O catalysts. In addition, the photocatalytic principle of Rh− Cu 2 O catalysts for dye degradation was also discussed. These results indicated that oxidatively bonded metal species in surface layers of Cu 2 O was feasible for getting an efficient charge-separation−transferring M−Cu 2 O interface to improve the photoelectronic conversion performance, which could be referred to as a notable system to directly engineer a semiconductor surface for advanced photoenergy applications.

show abstract

Section: Methodssupporting

confidence: 85%

Construction of a Highly-Dispersed and Efficient Charge-Separation–Transferring Interface by Oxidatively-Bonding Rh in Cu₂O Surface for Dye Photodegradation

Xiu-rong

Zhao

et al. 2019

J. Phys. Chem. C

View full text Add to dashboard Cite

show abstract

“…Besides the chemical composition, the morphology of the sample is also dependent on the precursor solution. As previously discussed, the addition of Sn(IV) and Sn(II) can lead to the reduction of particle size, in agreement with the literature . The particles, especially nano‐sized ones, tend to agglomerate, which could be driven by surface energy reduction .…”

Section: Resultsmentioning

confidence: 99%

Microwave‐Assisted Synthesis of Copper‐Based Electrocatalysts for Converting Carbon Dioxide to Tunable Syngas

et al. 2020

View full text Add to dashboard Cite

Copper (Cu)‐based materials for efficient CO2 conversion to adjustable syngas are reported. We employ an energy‐efficient microwave‐assisted route to synthesize copper/copper oxides with different structures and morphologies. The initial oxidation state of the copper on the surface significantly influences the performance of the materials in the CO2 reduction reaction (CO2RR). On the as‐prepared material surface, a high content of Cu2O improves the selectivity toward CO and consequently the catalyzed CO2RR produce a syngas with a low H2/CO ratio, while the CuO performs poorly. In particular, Cu2O particles with a cubic shape show the highest selectivity for the CO formation. The superior catalytic activity of the Cu2O cubes for the CO2RR is attributed to the surface roughening under potential, which offers abundant electrochemically active sites and facilitates mass transport.

show abstract

“…Based on the photocatalytic degradation results, the possible photocatalytic mechanism under visible light irradiation is proposed. Cu is a good electron acceptor and facilitates the separation of electron–hole pairs [36], which will produce reactive radicals and makes a great contribution to the enhanced photocatalytic activity. However, excess Cu would cover the reactive sites on photocatalysts, which would lead to a decrease in the photocatalytic activity.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, different morphological Cu 2 O were reported, such as films, quantum dots, nanospheres, nanocubes, nanowires, nanorods, octahedral and so on [17][18][19][20][21]. However, pure Cu 2 O as photocatalysts to degrade organic pollutant has low photocatalytic efficiency under the visible light because of the photo-generated electrons and holes fast combination [22]. Therefore, it is urgent to improve the photocatalytic activity of Cu 2 O.…”

Section: Introductionmentioning

confidence: 99%

One‐step solvothermal synthesis of Cu–Cu ₂ O composite with improved photocatalytic activity under visible light irradiation

Gao

Xue

2019

Micro & Nano Letters

View full text Add to dashboard Cite

Microspheres-like Cu-Cu 2 O composites were successfully fabricated through a facial one-step solvothermal method. The phase and morphology of Cu-Cu 2 O composites were characterised by X-ray diffraction, scanning and transmission electron microscopy, and highresolution transmission electron microscopy. Also, the photodegradation experimental of methyl orange (MO) displayed that the as-obtain Cu-Cu 2 O composites possess excellent photocatalytic activity. After 120 min visible light irradiation, the photodegradation rate of MO on pure Cu 2 O and Cu-Cu 2 O was up to 11.8 and 90.6%, respectively. Moreover, the photodegradation rate of MO on Cu-Cu 2 O was 19.5 times than that on pure Cu 2 O. The great photocatalytic activity of Cu-Cu 2 O composites might be ascribed to the appropriate amount of Cu, which could promote the transfer of photo-generated electrons and restrain the recombination of electron-hole.

show abstract

Microwave Synthesis of Cu/Cu2O/SnO2 Composite with Improved Photocatalytic Ability Using SnCl4 as a Protector

Cited by 14 publications

References 34 publications

Construction of a Highly-Dispersed and Efficient Charge-Separation–Transferring Interface by Oxidatively-Bonding Rh in Cu₂O Surface for Dye Photodegradation

Construction of a Highly-Dispersed and Efficient Charge-Separation–Transferring Interface by Oxidatively-Bonding Rh in Cu₂O Surface for Dye Photodegradation

Microwave‐Assisted Synthesis of Copper‐Based Electrocatalysts for Converting Carbon Dioxide to Tunable Syngas

One‐step solvothermal synthesis of Cu–Cu ₂ O composite with improved photocatalytic activity under visible light irradiation

Contact Info

Product

Resources

About

Microwave Synthesis of Cu/Cu2O/SnO2 Composite with Improved Photocatalytic Ability Using SnCl4 as a Protector

Cited by 14 publications

References 34 publications

Construction of a Highly-Dispersed and Efficient Charge-Separation–Transferring Interface by Oxidatively-Bonding Rh in Cu2O Surface for Dye Photodegradation

Construction of a Highly-Dispersed and Efficient Charge-Separation–Transferring Interface by Oxidatively-Bonding Rh in Cu2O Surface for Dye Photodegradation

Microwave‐Assisted Synthesis of Copper‐Based Electrocatalysts for Converting Carbon Dioxide to Tunable Syngas

One‐step solvothermal synthesis of Cu–Cu 2 O composite with improved photocatalytic activity under visible light irradiation

Contact Info

Product

Resources

About

Construction of a Highly-Dispersed and Efficient Charge-Separation–Transferring Interface by Oxidatively-Bonding Rh in Cu₂O Surface for Dye Photodegradation

Construction of a Highly-Dispersed and Efficient Charge-Separation–Transferring Interface by Oxidatively-Bonding Rh in Cu₂O Surface for Dye Photodegradation

One‐step solvothermal synthesis of Cu–Cu ₂ O composite with improved photocatalytic activity under visible light irradiation