Hydrothermal synthesis of Pd-doped rGO/ZnO-SnO2 nanocomposites for efficient hydrogen detection

Zhang, Xinxiao; Sun, Jianhai; Chen, Tingting; Xiang, Chao; Zhao, Yan; Zhang, Ning

doi:10.1007/s11581-022-04523-5

Cited by 5 publications

(1 citation statement)

References 36 publications

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“…Based on this, this experiment introduces GO on the basis of SnO 2 /ZnO to degrade organic dyes rapidly to effectively improve the above problems of binary heterojunction. As we all know, GO has a two-dimensional structure consisting of a single-layer carbon honeycomb network; unique optical, electrical, and thermal conductivity; low density; and high carrier mobility, making it a good modified photocatalytic material that is widely used in catalysis [ 20 , 21 , 22 ]. Therefore, in this study, a series of binary (ZS) and ternary (ZSG) composites were prepared by hydrothermal and ultrasonic water bath methods ( Scheme 1 ) to compare the adsorption capacity of the dyes as well as the degradation performance, and then the main factors affecting their photocatalytic efficiency were investigated.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Enhancement of Carrier Migration by SnO2/ZnO@GO Heterojunction for Rapid Degradation of RhB

Chen,

Li,

Wang

et al. 2024

Molecules

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Organic dyes in natural waters jeopardize human health. Whether semiconductor materials can effectively degrade dyes has become a challenge for scientific research. Based on this, this study rationally prepared different nanocomposites to remove organic dyes effectively. Pure SnO2 quantum dots, ZnO nanosheets, and SnO2/ZnO (ZS) binary nanocomposites are prepared using the hydrothermal method. Subsequently, SnO2/ZnO@GO (ZSG) ternary composites containing different amounts of GO, i.e., ZSG-5, ZSG-15, and ZSG-25, are synthesized by an ultrasonic water bath method, in which ZS was coupled with GO to form Z-type heterojunctions. The ZSG-15 ternary composites exhibited excellent photocatalytic activity for the degradation of rhodamine B by simulating sunlight. The test results show that the degradation rate of ZSG-15 is about 7.6 times higher than ZnO. The increase in photocatalytic activity is attributed to the synergistic effect of SnO2 and GO to improve the separation efficiency of photogenerated carriers in ZnO. Notably, the large specific surface area of GO increases the reactive sites. Compared with binary nanocomposites, ZSG-15 broadens the response range to light while further accelerating the electron transport rate and improving the photoelectric stability.

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Section: Introductionmentioning

confidence: 99%

Synergistic Enhancement of Carrier Migration by SnO2/ZnO@GO Heterojunction for Rapid Degradation of RhB

Chen,

Li,

Wang

et al. 2024

Molecules

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Electrospun ZnO–SnO2 heterojunction belts for hydrogen sensing

Bulemo

2023

J Mater Sci: Mater Electron

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Chemiresistive sensors are promising devices for H 2 sensing in a broad range of applications including fuel cells, hydrogen storage systems, petroleum re nement, and diagnosis of oil-insulated transformers.Herein, electrospun ZnO-SnO 2 belts were synthesized and applied as resistive-type sensing layers for H 2 sensing. The ZnO-SnO 2 belts containing 20 mol% of Zn relative to Sn showed a response (R a /R g ) of 6.7, fast response speed (3.6 sec), and a distinguishable selectivity toward 5 ppm H 2 at 400°C in the presence of HCHO, CH 4 , NH 3 , CO, and CO 2 . The sensor displayed a repeatable response when subjected to 15 cycles of alternate air and 5 ppm H 2 exposure. A unique H 2 sensing performance of the belts was attributed to their belt morphology, numerous surface pores, smaller crystal size, ZnO/SnO 2 heterojunction, and ZnO metallization following H 2 exposure.

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Development of ZnO/SnO2/rGO hybrid nanocomposites for effective photocatalytic degradation of toxic dye pollutants from aquatic ecosystems

Packialakshmi

Albeshr

Alrefaei

et al. 2023

Environmental Research

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Hydrothermal synthesis of Pd-doped rGO/ZnO-SnO2 nanocomposites for efficient hydrogen detection

Cited by 5 publications

References 36 publications

Synergistic Enhancement of Carrier Migration by SnO2/ZnO@GO Heterojunction for Rapid Degradation of RhB

Synergistic Enhancement of Carrier Migration by SnO2/ZnO@GO Heterojunction for Rapid Degradation of RhB

Electrospun ZnO–SnO2 heterojunction belts for hydrogen sensing

Development of ZnO/SnO2/rGO hybrid nanocomposites for effective photocatalytic degradation of toxic dye pollutants from aquatic ecosystems

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