PbHgI4/HgI2 nanocomposite: simple synthesis, characterization and electrochemical and optical properties

Soofivand, Faezeh; Salavati‐Niasari, Masoud

doi:10.1007/s10854-016-5838-x

Cited by 6 publications

(3 citation statements)

References 19 publications

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“…As shown in Figure 3 , the deconvolution results obtained at 0 and 20 W were analyzed by the peak differentiation-imitating to illustrate the proportion of CsPbI 3 and MAPbI 3 peaks which overlapped in the XRD pattern. The peaks of (I), (II), and (III) are represented in the (100) orientation of CsPbI 3 at 13.97°, the (110) orientation of lead tetroxide (Pb 3 O 4 ) at 14.05°, and the (110) orientation of MAPbI 3 at 14.16°, respectively [ 27 , 28 , 29 ]. In Figure 3 a,b, the peaks (III) and (I) are obviously the major and minor phases, respectively.…”

Section: Resultsmentioning

confidence: 99%

Investigation of the Stability of Methylammonium Lead Iodide (MAPbI3) Film Doped with Lead Cesium Triiodide (CsPbI3) Quantum Dots under an Oxygen Plasma Atmosphere

et al. 2021

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In this study, we describe composited perovskite films based on the doping of lead cesium triiodide (CsPbI3) quantum dots (QDs) into methylammonium lead iodide (MAPbI3). CsPbI3 QDs and MAPbI3 were prepared by ligand-assisted re-precipitation and solution mixing, respectively. These films were optimized by oxygen plasma treatment, and the effect of powers from 0 to 80 W on the structural properties of the composited perovskite films is discussed. The experimental results showed that the light-harvesting ability of the films was enhanced at 20 W. The formation of the metastable state (lead(II) oxide and lead tetroxide) was demonstrated by peak differentiation-imitating. A low power enhanced the quality of the films due to the removal of organic impurities, whereas a high power caused surface damage in the films owing to the severe degradation of MAPbI3.

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Section: Resultsmentioning

confidence: 99%

Investigation of the Stability of Methylammonium Lead Iodide (MAPbI3) Film Doped with Lead Cesium Triiodide (CsPbI3) Quantum Dots under an Oxygen Plasma Atmosphere

et al. 2021

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“…Figure 6 shows the XRD peak fitting patterns of composite perovskite treated by argon plasma at different powers. The peaks are represented in the (100) orientation of CsPbI 3 at 13.97 • , the (110) orientation of Pb 3 O 4 at 14.05 • , and the (110) orientation of MAPbI 3 at 14.16 • , respectively [22,23]. The presence of the oxygen pollutant Pb 3 O 4 can be observed in Figure 6a.…”

Section: Resultsmentioning

confidence: 94%

The Influence of Argon Plasma on Organic Perovskite MAPbI3 Film Doped with Inorganic Perovskite CsPbI3 Quantum Dots (QDs)

et al. 2022

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In this study, the inorganic perovskite cesium lead triiodide (CsPbI3) quantum dots (QDs) produced by hot-injection method were added into the hybrid perovskite methylamine lead triiodide (CH3NH3PbI3; MAPbI3) to form composite perovskite film. It is not easy for argon (Ar) to react with perovskite. Therefore, argon plasma was used to optimize the properties of the surface. However, methylamine lead triiodide molecular will be degraded by excessive wattage. Therefore, the influence of plasma power acting on composite perovskite film was investigated. The experimental results show that the light absorption capacity can be increased by argon plasma power of 140 watt (W) acting on the surface of films because organic impurities are removed and surface morphology of film is changed.

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“… 22–24 . Among them, the gel system formed by organic crosslinked agents has excellent high‐temperature resistance 25–27 . Allison et al 28 found that polyvinylimide could cross‐link polymers to form a gel system at room temperature.…”

Section: Introductionmentioning

confidence: 99%

A gel system with long‐term high‐temperature stability for deep profile modification of high‐temperature oil and gas reservoirs

Tian,

Liu,

Liu

et al. 2023

J of Applied Polymer Sci

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Profile modification is the key for efficient development of oil and gas reservoirs, especially high‐temperature reservoirs, which requires the system to have good high‐temperature resistance. According to the characteristics of high‐temperature reservoir, a high temperature gel composed of terpolymer, modified phenolic resin, aromatic amine curing agent and thiourea was developed. The effects of different components on the properties of the gel system were clarified. Then, the long‐term thermal stability under high‐temperature conditions was studied. In addition, the plugging performance of gel system under different permeability and injection volume was studied. Finally, the gelation properties and plugging properties of gel system with the flow distance were studied by simulating the flow of porous media. The results show that the gel system has high strength and suitable gelation time, and it can be adjusted in real time according to different oilfield requirements. In the range of 75–150°C, the gel system had excellent long‐term stability. When the temperature was 75°C, no free water after 120 days, and the viscosity only decreased from 13,131 to 11,254 mPa·s. Even at 150°C, the viscosity was as high as 8350 mPa·s after 120 days, and the free water was only 5.5%. The gel system had good adhesion ability on the porous media surface and strong anti‐flooding properties. When the injection volume was 0.1 pore volume (PV in short), the plugging rate to the sand packed tube was 72.7%. When the injection volume was 0.5 PV, the plugging rate was as high as 97.6%. The plugging rate of the gel system for the sand packed tube with permeability of 500 mD was 98.7% when the injection volume was 0.5 PV. When the permeability increased to 3000 mD, the plugging rate still reached 92.3%. The gel system also had an excellent deep profile control ability, and the viscosity retention of at 60 cm was as high as 96%. When the flow distance was 2 m, the viscosity retention also reached 75%. The rheological properties also shown that the gel system had excellent shearing resistance and adsorption resistance. Finally, combined with the state of the gel system on the surface of the porous media, there was no cementation between the formation sand before the injection, and the sand particles did not stick to each other. After the gel was injected, the adhesion of gel system on the porous media surface was very strong. The 3D network structure was also very dense, the sand particles could have good cementation effect under the adhesion of gel system.

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PbHgI4/HgI2 nanocomposite: simple synthesis, characterization and electrochemical and optical properties

Cited by 6 publications

References 19 publications

Investigation of the Stability of Methylammonium Lead Iodide (MAPbI3) Film Doped with Lead Cesium Triiodide (CsPbI3) Quantum Dots under an Oxygen Plasma Atmosphere

Investigation of the Stability of Methylammonium Lead Iodide (MAPbI3) Film Doped with Lead Cesium Triiodide (CsPbI3) Quantum Dots under an Oxygen Plasma Atmosphere

The Influence of Argon Plasma on Organic Perovskite MAPbI3 Film Doped with Inorganic Perovskite CsPbI3 Quantum Dots (QDs)

A gel system with long‐term high‐temperature stability for deep profile modification of high‐temperature oil and gas reservoirs

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