Efficient Photoelectrochemical Performance of γ Irradiated g-C3N4 and Its g-C3N4@BiVO4 Heterojunction for Solar Water Splitting

Mohamed, Nurul Aida; Ullah, Habib; Safaei, Javad; Ismail, Aznan Fazli; Noh, Mohamad Firdaus Mohamad; Soh, Mohd Fairuz; Ibrahim, Mohd Adib; Ludin, Norasikin Ahmad; Teridi, Mohd Asri Mat

doi:10.1021/acs.jpcc.9b00217

Cited by 99 publications

(44 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Better crystallinity could eventually facilitate the migration of electrons in the atom. 28 The morphology of the pure and γ-radiated g-C 3 N 4 powder was also investigated by FESEM. Figure S1 shows that the size of both g-C 3 N 4 particles is almost similar in the range of above 200 nm.…”

Section: Resultsmentioning

confidence: 99%

Improving the stability and efficiency of polymer solar cells by γ‐radiated graphitic carbon nitride

Mumthas

Noh

Arzaee

et al. 2021

Intl J of Energy Research

Self Cite

View full text Add to dashboard Cite

Graphitic carbon nitride (g-C 3 N 4 ) is a potential additive that can alter the polymer solar cells (PSC) performance. Hereby, we report a novel strategy by applying γ-radiated g-C 3 N 4 as additive into bulk heterojunction polymer solar cell (BHJ-PSC). The incorporation of γ-radiated g-C 3 N 4 into the active layer P3HT:PC 61 BM augments the efficiency of BHJ-PSC by more than half with respect to the standard undoped device counterpart. The increased performance of γ-radiated g-C 3 N 4 -doped BHJ-PSC is related to increased surface roughness, higher crystallinity, greater optical absorption of the polymer layer and improved charge transfer/recombination dynamics within the device. The optimized BHJ-PSC containing γ-radiated g-C 3 N 4 without encapsulation reaches 2.4% power conversion efficiency (PCE) and the device also retains 60% of the initial PCE even after exposure to high humidity condition (relative humidity 40%-70%) for 30 days. This suggests that γ-radiated g-C 3 N 4 is capable of preventing moisture and oxygen-induced degradation of P3HT:PC 61 BM. The γ-radiated g-C 3 N 4 additive is also employed in PBDTTT-C:PCBM polymer system which demonstrates the champion PCE of 2.9%. The present work not only provides an effective strategy for simultaneously enhancing the efficiency and stability of BHJ-PSC, but also opens up a new horizon for radiation technology and additive engineering.

show abstract

Section: Resultsmentioning

confidence: 99%

Improving the stability and efficiency of polymer solar cells by γ‐radiated graphitic carbon nitride

Mumthas

Noh

Arzaee

et al. 2021

Intl J of Energy Research

Self Cite

View full text Add to dashboard Cite

show abstract

“…Under such conditions, electrons generated in the CB of Bi 2 O 3 would quickly be coupled with graphene VB holes [86]. Therefore, the photogenerated electrons accumulated on the CB of graphene display strong reduction ability, and the photogenerated holes on the VB of Bi 2 O 3, exhibit excellent oxidation ability [87,88]. The Z-Scheme PC activities are more effective than one component in terms of reduction and oxidation and advanced photocatalytic performance in the traditional photocatalysts [89,90].…”

Section: Bismuth-graphene Based Photocatalytic Materials 21 Bi 2 O 3 and Bi 2 S 3 /Graphene Compositesmentioning

confidence: 99%

Bismuth-Graphene Nanohybrids: Synthesis, Reaction Mechanisms, and Photocatalytic Applications—A Review

et al. 2021

Self Cite

View full text Add to dashboard Cite

Photocatalysis is a classical solution to energy conversion and environmental pollution control problems. In photocatalysis, the development and exploration of new visible light catalysts and their synthesis and modification strategies are crucial. It is also essential to understand the mechanism of these reactions in the various reaction media. Recently, bismuth and graphene’s unique geometrical and electronic properties have attracted considerable attention in photocatalysis. This review summarizes bismuth-graphene nanohybrids’ synthetic processes with various design considerations, fundamental mechanisms of action, heterogeneous photocatalysis, benefits, and challenges. Some key applications in energy conversion and environmental pollution control are discussed, such as CO2 reduction, water splitting, pollutant degradation, disinfection, and organic transformations. The detailed perspective of bismuth-graphene nanohybrids’ applications in various research fields presented herein should be of equal interest to academic and industrial scientists.

show abstract

“…Mikrograf FESEM-EDX dipamerkan pada Rajah 2(a). Morfologi permukaan nipis g-C 3 N 4 dan kadar radiasi 0.1 kGy, 0.5 kGy dan tanpa sinar mempamerkan pembentukan mesoporous seperti 'rumpai laut' pada permukaan FTO (Mohamed et al 2018). Hasil kajian menunjukkan tiada perbezaan ke atas g-C 3 N 4 yang telah disinar gama.…”

Section: Keputusan Dan Perbincangan Komposisi Dan Kehabluranunclassified

“…Kewujudan elemen seperti C dan N pada elektrod g-C 3 N 4 disahkan dengan keputusan EDX pada Rajah 2(e) dan Rajah 2(d) menunjukkan pemetaan taburan sekata bagi unsur C dan N di atas filem nipis. Ini penting bagi memastikan unsur g-C 3 N 4 berselerak dengan taburan yang sekata di atas permukaan filem nipis untuk mencapai kadar penyerapan cahaya yang tinggi (Mohamed et al 2018).…”

Section: Keputusan Dan Perbincangan Komposisi Dan Kehabluranunclassified

“…Spektrum serapan bagi larutan g-C 3 N 4 , sinar gama g-C 3 N 4 (0.1 kGy berserta 0.5 kGy) ditunjukkan dalam Rajah 4. Kesemua sampel menunjukkan serapan maksimum pada panjang gelombang 320 nm dan mewakili konjugasi ikatan karbon dan nitrid (Mohamed et al 2018;. Manakala untuk panjang gelombang 230 nm mewakili serapan untuk amino (Peng et al 2016).…”

Section: Sifat Optik Dan Sela Jalurunclassified

See 1 more Smart Citation

Peningkatan Kecekapan Pemisahan Air Menggunakan g-C3N4 yang Disinar Gama

Mohamed

Safaei

Ismail³

et al. 2019

JSM

Self Cite

View full text Add to dashboard Cite

Dalam kajian ini, kesan sinar gama ke atas bahan semikonduktor g-C 3 N 4 kGy (0.1 kGy dan 0.5) dibincangkan dan dibandingkan dengan sampel yang tidak disinar untuk melihat perbezaanya. Bahan g-C 3 N 4 disintesis dari urea melalui proses pempolimeran haba pada suhu 520°C. Struktur dan morfologi g-C 3 N 4 dianalisis dengan menggunakan pembelauan Sinar-X (XRD), spektroskopi transformasi Fourier inframerah (FT-IR), mikroskop pengimbas elektron pancaran medan dengan spektroskopi tenaga sinar-X (FESEM-EDX), spektroskopi cahaya nampak-ultraungu (UV-Vis) dan ketumpatan arus (LSV). Sinar gama telah mengubah struktur ikatan g-C 3 N 4 dan mengurangkan sela jalur iaitu daripada 2.80 eV kepada 2.72 eV. Di samping itu, sampel g-C 3 N 4 yang disinar pada 0.1 kGy menghasilkan prestasi lima kali ganda lebih tinggi iaitu daripada 3.59 µAcm-2 kepada 14.2 µAcm-2 pada 1.23 V lawan Ag/AgCl dalam larutan elektrolit 0.5 M Na 2 SO 4 (pH7). Kesimpulannya, keputusan kajian menunjukkan bahan semikonduktor yang dirawat dengan sinar gama berpotensi untuk meningkatkan fotoelektrokimia (PEC) pemisahan air.

show abstract

Efficient Photoelectrochemical Performance of γ Irradiated g-C₃N₄ and Its g-C₃N₄@BiVO₄ Heterojunction for Solar Water Splitting

Cited by 99 publications

References 62 publications

Improving the stability and efficiency of polymer solar cells by γ‐radiated graphitic carbon nitride

Improving the stability and efficiency of polymer solar cells by γ‐radiated graphitic carbon nitride

Bismuth-Graphene Nanohybrids: Synthesis, Reaction Mechanisms, and Photocatalytic Applications—A Review

Peningkatan Kecekapan Pemisahan Air Menggunakan g-C3N4 yang Disinar Gama

Contact Info

Product

Resources

About