ENHANCED ACTIVITY OF C3N4 WITH ADDITION OF ZnO FOR PHOTOCATALYTIC REMOVAL OF PHENOL UNDER VISIBLE LIGHT

Hussin, Faisal; Lintang, Hendrik Oktendy; Yuliati, Leny

doi:10.17576/mjas-2016-2001-11

Cited by 9 publications

(3 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Modification of g-C3N4 with carbonaceous materials based motif has proven to be an efficient approach to alter its optical properties [89]. However g-C3N4 possesses relatively negative conduction band potential that can able to reduce many pollutants, such as Cr (VI), CO2, and organic dyes but shows lower oxidation and mineralization activities [90,91]. Incorporation of metal free components such as GO, RGO, polyaniline and activated carbon may enhance the conductivity, strength and surface area of as fabricated g-C3N4 based photo catalysts [92].…”

Section: Coupling With Metal-free Substratesmentioning

confidence: 99%

Structural Modifications of Carbon Nitride for Photocatalytic Applications

Kumar¹

2021

Materials Research Foundations

View full text Add to dashboard Cite

The current research on photocatalysis is totally focused on the designing and innovation of various low cost materials. For an efficient photocatalyst, there are some aspects which are to be assessed before practical use, such as optical activity, thermal and chemical stability, easy and availability of raw material, biocompatibility, etc. Fortunately, g-C3N4 offers most of these qualities to behave as a star photocatalyst. g-C3N4 could be easily prepared from low cost precursor materials such as urea, melamine, cyanimide and dicyandiamide by simple thermal treatment. Furthermore, larger surface area and two-dimensional planar conjugation structure of g-C3N4 can provide a large platform for anchoring various substrates. Various researchers have utilized g-C3N4 for varieties of applications such as green energy production, energy storage devices, biomedical application, wastewater treatment via photocatalysis and adsorption, photo sensors, etc. Although there are some disadvantages associated with use of g-C3N4 when utilized for various applications. To overcome such hitches various structural modifications have been applied to g-C3N4. The current chapter summarizes a wide mode of applications of g-C3N4 along with various structural modifications which were recently applied to improve the photocatalytic efficacy.

show abstract

Section: Coupling With Metal-free Substratesmentioning

confidence: 99%

Structural Modifications of Carbon Nitride for Photocatalytic Applications

Kumar¹

2021

Materials Research Foundations

View full text Add to dashboard Cite

show abstract

“…360 and 420 nm for the CN-KCl-ZnCl 2 , owing to the presence of Zn species that might give a new charge transfer pathway, but different from the one observed on ZnO-CN composites. 27,28 However, the improved optical properties of the CN samples prepared in the presence of the salt melt would not be the only important parameter affecting the photocatalytic performance.…”

Section: Optical Propertiesmentioning

confidence: 99%

“…Hybrid materials between CN and other materials have also been reported. 27,28,30 For instance, the activity of the CN for degradation of phenol under visible light irradiation for 5 h could be improved up to 1.3 times higher with the presence of zinc oxide. 27,28 On the other hand, the use of reduced graphene oxidecarbon nitride could have up to 2.8 times higher photocatalytic activity than the CN when the photocatalytic degradation of phenol was carried out under visible light irradiation for 3 h. 30 Since this work demonstrated that 2.4 times higher photocatalytic activity could be achieved on the crystalline CN, better improvement is expected when it is used with other materials as a composite or hybrid photocatalyst.…”

Section: Photocatalytic Activitymentioning

confidence: 99%

Synthesis of highly active crystalline carbon nitride prepared in various salt meltsfor photocatalytic degradation of phenol

Hatta¹,

Lintang²,

Lee³

et al. 2019

Turk J Chem

Self Cite

View full text Add to dashboard Cite

Crystallinity could have a decisive influence on photocatalytic performance. In this study, the synthesis of crystalline carbon nitride (CN) was studied via an ionic melt polycondensation of urea precursor in the presence of various salt melts, which were KCl-LiCl, KCl-NaCl, and KCl-ZnCl 2. While all the salt melts helped to improve the optical properties of the CN, only KCl-LiCl salt melt could form crystalline CN as evidenced by its X-ray diffraction pattern. Furthermore, the specific surface area of CN (72 m 2 /g) was maintained when using KCl-LiCl (73 m 2 /g), but it was decreased in the presence of KCl-NaCl (22 m 2 /g) or KCl-ZnCl 2 (17 m 2 /g). The CN prepared without the salt melt only showed 10% phenol degradation under the light of a solar simulator, while the use of KCl-LiCl significantly improved the activity to 24%. On the other hand, the CN prepared in the presence of KCl-NaCl and KCl-ZnCl 2 gave phenol degradation of 14% and 7%, respectively. This work demonstrated that the crystallinity, improved absorption in the visible light region, and maintained large specific surface area of the CN were crucial to achieve the high activity.

show abstract