Boosting the Photocatalytic Hydrogen Evolution Performance of Mg- and Cl-Doped Graphitic Carbon Nitride Microtubes

Long, Dan; Diao, Wenyu; Rao, Xi; Zhang, Yongping

doi:10.1021/acsaem.0c01619

Cited by 27 publications

(10 citation statements)

References 43 publications

(85 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We suppose that the presented synthesis procedure results in the substitution of the melamine molecule with 2-chloro-4,6-diamino-1,3,5-triazine to form Cl-doped melon, followed by further polycondensation leading to chlorine-doped polymeric carbon nitride. The substitution has an effect on the appearance of C-Cl bonds in the PCN structure where chlorine atoms are located between the carbon nitride layers, as reported by other groups [39,55]. After doping with Cl, the contribution of C-NH x bonds to the XPS signal decreased from 4.23% to 2.49% and that of N 3 -C bonds from 6.50% to 3.23%, with a simultaneous increase of the N 2 -C contribution from 84.77% to 87.23%.…”

Section: Resultssupporting

confidence: 54%

“…Moreover, a reduction in the peak intensity was found, indicating a lower recombination rate of the electron–hole pairs, which is attractive in the photocatalytic process [ 44 ]. It shows that chlorine doping improves visible-light harvesting with PCN and promotes visible-light photocatalytic activity [ 55 ].…”

Section: Resultsmentioning

confidence: 99%

“…It demonstrates an improved generation of electron–hole pairs and better transportation of the charge carriers after modification. After three cycles of light on–off, the performance of both electrodes tends to stabilize, indicating that the photocatalysts are stable under visible-light irradiation [ 55 ].…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Boosting of photocatalytic hydrogen evolution via chlorine doping of polymeric carbon nitride

Aleksandrzak¹,

Kijaczko²,

Kukułka³

et al. 2021

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

Chlorine is found to be a suitable element for the modification of polymeric carbon nitride properties towards an efficient visible-light photocatalytic activity. In this study, chlorine-doped polymeric carbon nitride (Cl-PCN) has been examined as a photocatalyst in the hydrogen evolution reaction. The following aspects were found to enhance the photocatalytic efficiency of Cl-PCN: (i) unique location of Cl atoms at the interlayers of PCN instead of on its π-conjugated planes, (ii) slight bandgap narrowing, (iii) lower recombination rate of the electron–hole pairs, (iv) improved photogenerated charge transport and separation, and (v) higher reducing ability of the photogenerated electrons. The above factors affected the 4.4-fold enhancement of the photocatalytic efficiency in hydrogen evolution in comparison to the pristine catalyst.

show abstract

Section: Resultssupporting

confidence: 54%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Boosting of photocatalytic hydrogen evolution via chlorine doping of polymeric carbon nitride

Aleksandrzak¹,

Kijaczko²,

Kukułka³

et al. 2021

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

show abstract

“…Table 1 summarized the recent work on the PCN‐based photocatalysts, including their design strategies, applications, and properties. [ 57,114–156 ]…”

Section: Polymeric Carbon Nitridementioning

confidence: 99%

Polymeric Carbon Nitride‐Derived Photocatalysts for Water Splitting and Nitrogen Fixation

Zhang

et al. 2021

Small

View full text Add to dashboard Cite

Photocatalysis is a promising energy conversion and environmental restoration technology. The main focus of photocatalysis is the development and manufacture of highly efficient photocatalysts. Semiconductor‐based photocatalysis technology based on harnessing solar energy is considered as an attractive approach to solve the problems of global energy shortage and environmental pollution. Since 2009 pioneering work has been carried out on polymeric carbon nitride (PCN) for visible photocatalytic water splitting, thus PCN‐based photocatalysis has become a hot research topic, demanding significant research attention. This article reviews the physical and chemical properties, synthesis methods, and the methods to control the morphology, heteroatom doping, and construction of heterojunctions to improve the performance of PCN‐based photocatalysts in water splitting and nitrogen fixation. Through different design strategies, the photo‐generated electron‐hole pair separation efficiency of PCN materials can be effectively improved, thereby improving their photocatalytic performance. Finally, the challenges of PCN‐based photocatalysts in water splitting and nitrogen fixation applications are discussed herein. It is strongly believed that through different design strategies, efficient PCN‐based photocatalysts can be constructed for both water splitting and nitrogen reduction. These excellent modification strategies can be used as a guiding theory for photocatalytic reactions of other promising catalysts and further promote the development of photocatalysis.

show abstract

“…Moreover, a reduction in the peak intensity was found, indicating a lower recombination rate of the electron-hole pairs, which is attractive in the photocatalytic process [44]. It shows that chlorine doping improves visible-light harvesting with PCN and promotes visible-light photocatalytic activity [55].…”

Section: Resultsmentioning

confidence: 91%

Boosting of photocatalytic hydrogen evolution via chlorine doping of polymeric carbon nitride

Aleksandrzak¹,

Kijaczko²,

Kukułka³

et al. 2021

Preprint

View full text Add to dashboard Cite

Chemical doping is an effective strategy for modifying the electrochemical properties of polymeric carbon nitride and tuning its visible-light photocatalytic activity. In this study, chlorine-doped polymeric carbon nitride (Cl-PCN) has been synthesized by the polycondensation method. Among a series of samples, 200Cl-PCN exhibited the best photocatalytic activities for the hydrogen evolution from water splitting. Main aspects were revealed: (i) unique location of Cl atoms at the interlayers of PCN instead of on its π-conjugated planes, (ii) slight band gap narrowing, (iii) lower recombination rate of the electron-hole pairs, and (iv) improved photogenerated charge transport and separation. The above factors affected the 4.4-fold enhancement of photocatalytic efficiency in hydrogen evolution in comparison to the pristine catalyst.

show abstract

Boosting the Photocatalytic Hydrogen Evolution Performance of Mg- and Cl-Doped Graphitic Carbon Nitride Microtubes

Cited by 27 publications

References 43 publications

Boosting of photocatalytic hydrogen evolution via chlorine doping of polymeric carbon nitride

Boosting of photocatalytic hydrogen evolution via chlorine doping of polymeric carbon nitride

Polymeric Carbon Nitride‐Derived Photocatalysts for Water Splitting and Nitrogen Fixation

Boosting of photocatalytic hydrogen evolution via chlorine doping of polymeric carbon nitride

Contact Info

Product

Resources

About