A TiO₂@MWCNTs nanocomposite photoanode for solar-driven water splitting

• Anh Quynh Huu Le,
• Ngoc Nhu Thi Nguyen,
• Hai Duy Tran,
• Van-Huy Nguyen and
• Le-Hai Tran

Beilstein J. Nanotechnol. 2022, 13, 1520–1530, doi:10.3762/bjnano.13.125

• ) nanocomposite by sol–gel method for visible-light-induced photocatalytic hydrogen evolution [8]. The photocatalyst consisted of dense TiO2 particles covering functionalized MWNTs and exhibited good photoactivity under visible light (λ > 420 nm), but the photoelectrochemical water splitting showed a low hydrogen

A Au/CuNiCoS₄/p-Si photodiode: electrical and morphological characterization

• Adem Koçyiğit,
• Adem Sarılmaz,
• Teoman Öztürk,
• Faruk Ozel and
• Murat Yıldırım

Beilstein J. Nanotechnol. 2021, 12, 984–994, doi:10.3762/bjnano.12.74

• quaternary CuNiCoS4 nanocrystals. The first study by Thompson is on the synthesis of CuNiCoS4 thiospinels [13]. The second is a study on the synthesis and photocatalytic hydrogen evolution, which was performed by our group [8]. In this study, the optical characterization results of the CuNiCoS4 nanocrystals

Nanoporous and nonporous conjugated donor–acceptor polymer semiconductors for photocatalytic hydrogen production

• Zhao-Qi Sheng,
• Yu-Qin Xing,
• Yan Chen,
• Guang Zhang,
• Shi-Yong Liu and
• Long Chen

Beilstein J. Nanotechnol. 2021, 12, 607–623, doi:10.3762/bjnano.12.50

• tunable bandgaps, high charge carrier mobility, and efficient intramolecular charge transfer. In this minireview, recent advances of D–A polymers in photocatalytic hydrogen evolution are summarized with a particular focus on modulating the optical and electronic properties of CPs by varying the acceptor

• counterparts to promote photocatalytic hydrogen evolution as long as the charge carrier transport was not compromised by the 3D structures. This claim was exemplified by the 9,9'-spirobifluorene–FSO-based porous polymer P63 (Figure 8), which exhibited the best catalytic performance under visible light among

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

• Malgorzata Aleksandrzak,
• Michalina Kijaczko,
• Wojciech Kukulka,
• Daria Baranowska,
• Martyna Baca,
• Beata Zielinska and
• Ewa Mijowska

Beilstein J. Nanotechnol. 2021, 12, 473–484, doi:10.3762/bjnano.12.38

• PCN is a suitable strategy towards boosting photocatalytic hydrogen evolution. Experimental Materials All purchased reagents employed for catalyst preparation were analytical grade and used without further purification. Synthesis of polymeric carbon nitride Polymeric carbon nitride was synthesized by

• spectra of the samples. BET surface area, T-plot analysis results for micropore area, external surface area, total pore volume, and average pore diameter of PCN and Cl-PCN. Comparative study of the photocatalytic hydrogen evolution of Cl- PCN and other carbon nitride catalysts doped with other elements

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

• have been prepared for photocatalytic hydrogen evolution under visible-light illumination. This approach not only results in a material with a narrower bandgap but also in the efficient charge transfer and separation, realizing the synergistic effect of C-doping and composite nanostructures. It was

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

• nanotubes (CNT) and g-C3N4 has been presented in Table 1. The role of graphene as a cocatalyst has been investigated by various research groups. Peng et al. [123] reported graphene oxide (GO)–CdS nanocomposites for photocatalytic hydrogen evolution by using Na2S and Na2SO3 as sacrificial agents, where GO

• state milling), for H2 evolution by water splitting under UV irradiation. It is very interesting to note that they tune the SrTiO3 nanoparticle size depending on the synthesis parameters. The SrTiO3 nanoparticles prepared by this polymerized complex route exhibit the best photocatalytic hydrogen

• evolution rate of 3.2 mmol h−1 g−1. This enhanced photocatalytic H2 evolution by water splitting of SrTiO3 nanoparticles could be attributed to the small particle size and hence large surface area. Small particles offer numerous active sites exposed on the surface of the catalyst. These active sites may

Enhanced photocatalytic hydrogen evolution by combining water soluble graphene with cobalt salts

• Jing Wang,
• Ke Feng,
• Hui-Hui Zhang,
• Bin Chen,
• Zhi-Jun Li,
• Qing-Yuan Meng,
• Li-Ping Zhang,
• Chen-Ho Tung and
• Li-Zhu Wu

Beilstein J. Nanotechnol. 2014, 5, 1167–1174, doi:10.3762/bjnano.5.128

• , Beijing 100190, P. R. China 10.3762/bjnano.5.128 Abstract There is tremendous effort put in the pursuit for cheap and efficient catalysts for photocatalytic hydrogen evolution systems. Herein, we report an active catalyst that uses the earth-abundant element cobalt and water-dispersible sulfonated

• graphene. The photocatalytic hydrogen evolution activity of the catalyst was tested by using triethanolamine (TEOA) as electron donor and eosin Y (EY) as the photosensitizer under LED irradiation at 525 nm. Hydrogen was produced constantly even after 20 h, and the turnover number (TON) reached 148 (H2/Co

• ) in 4 h with respect to the initial concentration of the added cobalt salts was shown to be 5.6 times larger than that without graphene. Keywords: cobalt salts; earth-abundant catalyst; photocatalysis; photocatalytic hydrogen evolution; water-dispersible sulfonated-graphene; Introduction

Functionalized nanostructures for enhanced photocatalytic performance under solar light

• Liejin Guo,
• Dengwei Jing,
• Maochang Liu,
• Yubin Chen,
• Shaohua Shen,
• Jinwen Shi and
• Kai Zhang

Beilstein J. Nanotechnol. 2014, 5, 994–1004, doi:10.3762/bjnano.5.113

• preferential exposure of Zn(0001) faces showed high photocatalytic activity [38]. Wang et al. constructed ZnO–CdS heterostructures by employing ZnO rods enclosed with well-developed {1100} and {0001} facets to promote photocatalytic hydrogen evolution [39]. Pan et al. found that {001}, {101} and {010} facets

Enhancement of photocatalytic H₂ evolution of eosin Y-sensitized reduced graphene oxide through a simple photoreaction

• Weiying Zhang,
• Yuexiang Li,
• Shaoqin Peng and
• Xiang Cai

Beilstein J. Nanotechnol. 2014, 5, 801–811, doi:10.3762/bjnano.5.92

• increasing irradiation time. The adsorption quantity of EY on the surface of RGO enhances, too. The two factors ultimately result in an enhancement of the photocatalytic hydrogen evolution over EY-RGO/Pt with increasing irradiation time. A possible mechanism is discussed. Keywords: eosin Y sensitization

• irradiation time. The two factors lead to the enhancement of the photocatalytic hydrogen evolution over EY-RGO/Pt with increasing irradiation time. The maximal apparent quantum yield of EY-RGO24/Pt for hydrogen evolution is up to 12.9% under visible light irradiation (λ ≥ 420 nm), and 23.4% under

• the septum during experiments. The amount of photocatalytic hydrogen evolution for 2 h of irradiation was determined on a gas chromatograph (TCD, 13X molecular sieve column, N2 as gas carrier). The average photon flux of the incident light determined on an FGH-1 Ray virtual radiation actinometer (light

High activity of Ag-doped Cd_0.1Zn_0.9S photocatalyst prepared by the hydrothermal method for hydrogen production under visible-light irradiation

• Leny Yuliati,
• Melody Kimi and
• Mustaffa Shamsuddin

Beilstein J. Nanotechnol. 2014, 5, 587–595, doi:10.3762/bjnano.5.69

• (Perkin Elmer Lambda 900). BaSO4 was used as a reflectance standard. Photocatalytic testing. As described in the previous studies [9][16], photocatalytic hydrogen evolution was performed in a closed side irradiated-Pyrex cell equipped with a water condenser to maintain the temperature constant during the

• )-doped Cd0.1Zn0.9S prepared by the co-precipitation method. Photocatalytic hydrogen evolution on Cd0.1Zn0.9S (filled circles), Ag(0.01)-doped Cd0.1Zn0.9S (empty triangles), Ag(0.03)-doped Cd0.1Zn0.9S (empty circles), and Ag(0.05)-doped Cd0.1Zn0.9S (empty squares) prepared by the hydrothermal method under

• visible-light irradiation. DR UV–visible spectra of (a) fresh and (b) used Ag(0.01)-doped Cd0.1Zn0.9S prepared by the hydrothermal method after second run. Photocatalytic hydrogen evolution on Cd0.1Zn0.9S (filled circles), Ag(0.01)-doped Cd0.1Zn0.9S (empty triangles), Ag(0.03)-doped Cd0.1Zn0.9S (empty

Preparation of NiS/ZnIn₂S₄ as a superior photocatalyst for hydrogen evolution under visible light irradiation

• Liang Wei,
• Yongjuan Chen,
• Jialin Zhao and
• Zhaohui Li

Beilstein J. Nanotechnol. 2013, 4, 949–955, doi:10.3762/bjnano.4.107

• for hydrogen evolution under visible light irradiation was also investigated. It was found that the photocatalytic hydrogen evolution activity over hexagonal ZnIn2S4 can be significantly increased by loading NiS as a co-catalyst. The formation of a good junction between ZnIn2S4 and NiS via the two

• step hydrothermal processes is beneficial for the directional migration of the photo-excited electrons from ZnIn2S4 to NiS. The highest photocatalytic hydrogen evolution rate (104.7 μmol/h), which is even higher than that over Pt/ZnIn2S4 nanocomposite (77.8 μmol/h), was observed over an optimum NiS

• loading amount of 0.5 wt %. This work demonstrates a high potential of the developing of environmental friendly, cheap noble-metal-free co-catalyst for semiconductor-based photocatalytic hydrogen evolution. Keywords: co-catalyst; hydrogen evolution; NiS; photocatalytic; photocatalysis; visible light