Coal-based carbon quantum dots-sensitized TiO2 NRs/PTTh heterostructure for self-powered UV detection

Preparation of modified humic acid/TiO2/P(AA-co-AM) nanocomposite hydrogels with enhanced dye adsorption and photocatalysis

“…As can be seen from Fig. 3(e), 42 all the diffraction peaks are consistent with the diffraction peaks of anatase TiO 2 , and there are no diffraction peaks of other crystal forms of TiO 2 . It can also be seen from the figure that the peak intensity of TiO 2 is very high, demonstrating a high degree of crystallinity.…”

Core–shell structures of Cu2O constructed by carbon quantum dots as high-performance zinc-ion battery cathodes

“…First, a CDs stock solution was prepared with H 2 O 2 -treated Xinjiang Heishan coal. 28 Then, a NaOH solution was added to the mixed solution of CuSO 4 ·5H 2 O, trisodium citrate and CDs stock solution. Subsequently, an l -ascorbic acid solution was added and stirred for a few minutes, and red precipitates of Cu 2 O-CDs- X were obtained ( X is 10, 20 and 30 according to the use of 10, 20 and 30 mL of the CDs stock solution, respectively).…”

Application of Conductive Polymer in TiO2-Based UV Photodetectors: A Review

“…Che et al 74 Poly(polyterthiophene) (PTTh) is a typical π-conjugated conducting polymer, which is widely used in photovoltaic devices due to its high hole transport capacity and large light absorption bandwidth, as well as its semiconductivity and high stability. Zhang et al 47,75 The pyro-phototronic effect plays an important role in improving the UV light detection performance of UV PDs. In our previous work, 77 we found a pyro-phototronic effect between TiO 2 NRs and the conducting polymer PEDOS and prepared a self-powered UV PD with enhanced UV light detection capability.…”

“…At the present time, the methods for preparing conductive polymer/TiO 2 composites include electrochemical deposition, in situ polymerization, photochemical polymerization, surface grafting polymerization, , etc. Zhang et al used TiO 2 /FTO as a substrate, TTh was used as a monomer and electrochemically polymerized onto the surface of TiO 2 for UV detection, and a good p-n heterojunction occurred in an interface of PTTh and TiO 2 , which improved the UV detection performance. Somani et al used an in situ deposition method to synthesize PANI/TiO 2 composites with high piezoresistance.…”

“…Poly­(polyterthiophene) (PTTh) is a typical π-conjugated conducting polymer, which is widely used in photovoltaic devices due to its high hole transport capacity and large light absorption bandwidth, as well as its semiconductivity and high stability. Zhang et al , used physical spin-coating and electrochemical deposition of Au and Carbon Quantum Dots (CQDs) to sensitize TiO 2 NRs and assembled them with PTTh to form self-powered UV PDs (TiO 2 NRs/Au/PTTh and TiO 2 NRs/C-CQDs/PTTh) for UV detection. The sensitization of TiO 2 NRs by Au (C-CQDs) promotes photogenerated carrier separation and transport, which is conducive to the improvement of carrier transport in hetero impurity junctions, the extension of carrier lifetime, and the enhancement of UV PD responsivity and photocurrent.…”