A visible-light photodetector based on heterojunctions between CuO nanoparticles and ZnO nanorods

• Doan Nhat Giang,
• Nhat Minh Nguyen,
• Duc Anh Ngo,
• Thanh Trang Tran,
• Le Thai Duy,
• Cong Khanh Tran,
• Thi Thanh Van Tran,
• Phan Phuong Ha La and
• Vinh Quang Dang

Beilstein J. Nanotechnol. 2023, 14, 1018–1027, doi:10.3762/bjnano.14.84

• negatively charged ions [43][61], following Equation 5: In addition, decorating CuO NPs onto ZnO NRs forms p–n junctions between the two materials. The heterojunction formation leads to a concentration gradient of charge carriers at the interfaces. CuO NPs act as a p-type semiconductor, in which holes are

Bismuth-based nanostructured photocatalysts for the remediation of antibiotics and organic dyes

• Akeem Adeyemi Oladipo and
• Faisal Suleiman Mustafa

Beilstein J. Nanotechnol. 2023, 14, 291–321, doi:10.3762/bjnano.14.26

• light absorption, weaker charge separation, and poor charge carrier mobility. Researchers are concentrating on several strategies, such as doping, heterojunction formation, induction of the surface plasmon resonance effect, and the formation of Z-schemes, Schottky junctions, and engineered composites

LED-light-activated photocatalytic performance of metal-free carbon-modified hexagonal boron nitride towards degradation of methylene blue and phenol

• Nirmalendu S. Mishra and
• Pichiah Saravanan

Beilstein J. Nanotechnol. 2022, 13, 1380–1392, doi:10.3762/bjnano.13.114

• approaches to make it as a light-driven nanomaterial owing to its potential capabilities. The light-driven ability of HBN can be achieved through multiple strategies. These include varying the structural morphology, heterojunction formation with a suitable photocatalyst, and doping with heteroatoms. The

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

• Vishal Dutta,
• Ankush Chauhan,
• Ritesh Verma,
• C. Gopalkrishnan and
• Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109

• of Bi-based photocatalysts. Keywords: bismuth-based nanomaterials; environmental remediation; heterojunction formation; photocatalysis; Introduction Nanomaterials photocatalysis is a “green” integrative technique that combines physics, chemistry, and materials science with chemical engineering to

• dopants and concentrations will increase photocatalytic activity. Photogenerated electron–hole separation efficiency and light absorption ability are critical functions that can be improved by appropriate doping. Heterojunction formation In general, for a photocatalyst to function appropriately, it is

Synthesis of novel C-doped g-C₃N₄ nanosheets coupled with CdIn₂S₄ for enhanced photocatalytic hydrogen evolution

• Jingshuai Chen,
• Chang-Jie Mao,
• Helin Niu and
• Ji-Ming Song

Beilstein J. Nanotechnol. 2019, 10, 912–921, doi:10.3762/bjnano.10.92

• CdIn2S4 has been successfully deposited on CCN nanosheets through the heterojunction formation, promoting the transfer of photo-induced charge between these two materials. No other peaks appeared in the XPS spectrum of CISCCN, inferring that impurities have not been introduced during the composite

Perovskite-structured CaTiO₃ coupled with g-C₃N₄ as a heterojunction photocatalyst for organic pollutant degradation

• Ashish Kumar,
• Christian Schuerings,
• Suneel Kumar,
• Ajay Kumar and
• Venkata Krishnan

Beilstein J. Nanotechnol. 2018, 9, 671–685, doi:10.3762/bjnano.9.62

• morphology. The SEM images of the CTCN heterojunction presented in Figure 4e and 4f shows the CT flakes deposited on g-C3N4 sheets, hence confirming the successful heterojunction formation with the 2D interface with face-to-face contact. The EDAX spectra of g-C3N4, CT and CTCN heterojunction presented in

• heterojunction due to their close interfacial contact. The heterojunction formation can be confirmed in Figure 5f as the presence of CT is confirmed with 0.267 nm (121) and 0.385 nm (101) lattice fringes along with g-C3N4 sheets clearly marked [48]. The lattice fringes of g-C3N4 are not observed in the

• under visible-light irradiation. The CTCN heterojunction provides a platform for the quick transfer of the photogenerated charge carriers from g-C3N4 to CT, thereby preventing their recombination and increasing their lifetime. This heterojunction formation also played a crucial role under natural

Two-dimensional carbon-based nanocomposites for photocatalytic energy generation and environmental remediation applications

• Suneel Kumar,
• Ashish Kumar,
• Ashish Bahuguna,
• Vipul Sharma and
• Venkata Krishnan

Beilstein J. Nanotechnol. 2017, 8, 1571–1600, doi:10.3762/bjnano.8.159

• improve the light absorption of g-C3N4 and retard the recombination of photogenerated charge carriers to improve the photocatalytic efficiency. These strategies involve doping with metal atoms [70], non-metal doping [71], coupling with other carbon-based materials [72], and heterojunction formation by

• separation rate of photogenerated charge carriers to enhance the quantum yield. Notably, such heterojunction formation with semiconductors also enhances the light absorption efficiency of photocatalysts from UV to visible region of the solar energy spectrum. Furthermore, it is noteworthy to mention here that

• various photocatalytic reactions. However, a very high exciton recombination rate limits the photocatalytic efficiency of BiVO4. Hence, to overcome this issue, the heterojunction formation with an ideal material like g-C3N4 is one of the promising strategies. The sulfur-doped g-C3N4-BiVO4 nanocomposite