ZnAl2O4: Ce3+ phosphors: Study of Crystal Structure, Microstructure, Photoluminescence Properties and Efficient Adsorption of Congo Red Dye

Habibi, Milad Kohi; Rafiaei, Seyed Mahdi; Alhaji, A.; Zare, Maryam

doi:10.1016/j.molstruc.2020.129769

Cited by 20 publications

(3 citation statements)

References 41 publications

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“…A precipitate in the form of a solid solution containing cations on an atomic scale will be produced. Because the process is simple but can produce on a large scale, several studies agree that this method is one of the best methods in ZnAl2O4 synthesis compared to other methods (Habibi et al, 2021). In addition, this method also has the advantage of using much lower temperatures with a high degree of homogenization.…”

Section: Co-precipitationmentioning

confidence: 88%

“…In the same year, Habibi and Ibrahim, et al synthesized ZnAl2O4 using the coprecipitation method with ammonia as a precipitating agent. The basic materials used are zinc nitrate and aluminum nitrate which are then calcined at a temperature of 600 o C. Habibi, et al (Habibi et al, 2021) produced a much smaller particle size of 3.8 nm while Ibrahim, et al (Ibrahim et al, 2021) of 13 nm. The difference in these two studies is the pH of the solution and the length of calcination time.…”

Section: Co-precipitationmentioning

confidence: 99%

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Study of the efficiency of ZnAl2O4 as green nanocatalyst

Birhi,

Laka

2024

Inornatus Biol. Educ. J.

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Waste from chemical reactions is still a hot issue to be discussed today. Green chemistry in its concept offers catalysts as an alternative to reducing waste resulting from chemical reactions. This literature study aims to examine the method of making ZnAl2O4 nanocatalysts and doping materials that are more effective in various reactions by considering the advantages and disadvantages of each. The content of the study includes the ZnAl2O4 nanocatalyst synthesis method, combination catalyst, and catalytic effectiveness in chemical reactions. Combustion, sol-gel, co-precipitation, hydrothermal, and microwave are the most common methods in the synthesis of ZnAl2O4. The use of precursors, fuel, and precipitating agents are very important factors when using combustion, sol-gel, and co-precipitation methods. Other factors that need to be considered are the raw material ratio, pH, and calcination temperature. The pH of the solution is 6-9 and the calcination temperature of 600oC – 800oC is the ideal point for producing nanocatalyst. The calcination temperature is lower to 300oC – 500oC when using hydrothermal and microwave as a synthesis method. ZnAl2O4 nanocatalyst has been identified as having good catalytic activity, but not higher than ZnAl2O4 combined with other catalysts. The combination of a catalyst with ZnAl2O4 spinel in hydrogenation, dehydrogenation, esterification, degradation, and organic synthesis has high catalytic activity with a conversion rate and selectivity of >70%.

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Section: Co-precipitationmentioning

confidence: 88%

Section: Co-precipitationmentioning

confidence: 99%

Study of the efficiency of ZnAl2O4 as green nanocatalyst

Birhi,

Laka

2024

Inornatus Biol. Educ. J.

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show abstract

“…1 These properties make them useful in sensors, 2 biomedical devices, 3 displays 4 etc. Numerous studies have been employed on different aluminates such as ZnAl 2 O 4 , 5 CuAl 2 O 4 , 6 CaAl 2 O 4 (ref. 7) etc.…”

Section: Introductionmentioning

confidence: 99%