The Application of Nano-TiO2 Photo Semiconductors in Agriculture

Wang, Yan; Sun, Changjiao; Zhao, Xiang; Cui, Bo; Zeng, Zhanghua; Wang, Anqi; Liu, Guoqiang; Cui, Haixin

doi:10.1186/s11671-016-1721-1

Cited by 89 publications

(43 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Similarly, the bond lengths between P 19 -S 20 in the triazophos molecule is the longest with the value of 1.85680 × 10 −10 m, followed by the bond lengths between P 19 -O 18 , P 19 -O 21 and P 19 -O 22 with the same value of 1.76000 × 10 −10 m. According to negative correlation between bond energy and bond length [49], the above longer bonds tend to cleave when attacked by ROS. This means the P 13 -O 12 bond in the profenofos molecule and the P 19 -O 18 bond in triazophos molecules are attacked first, leading to the P 13 14 1.45200 C 16 -C 17 1.50715 P 13 -O 26 1.76000 C 17 -C20 1.50713 P 13 -O 12 1.76000 O 26 -C 27 1.43000 P 13 -S 15 2.11000 C 27 -C 28 1.50025 C 16 -S 15 1.78000 O 12 -C 3 1.43000 C 3 -C 4 1.39543 C 1 -C 2 1.39516 C 4 -C 5 1.39483 C 2 -Cl 11 1.76000 C 5 -C 6 1.39514 C 2 -C 3 1.39471 C 6 -Br 10 1.91000 C 6 -C 1 1.39483…”

Section: Degradation Byproducts and Molecular Structurementioning

confidence: 99%

“…Triazophos P 19 -S 20 1.85680 N 3 -C 7 1.47000 P 19 -O 18 1.76000 C 7 -C 8 1.39516 P 19 -O 21 1.76000 C 7 -C 9 1.39483 P 19 -O 22 1.76000 C 8 -C 10 1.39471 O 18 -C 1 1.43000 C 9 -C 12 1.39514 C 1 -N 5 1.40175 C 10 -C 14 1.39543 C 1 -N 6 1.43487 C 12 -C 14 1.39483 C 2 -N 6 1.40185 O 21 -C 30 1.43000 C 2 -N 3 1.39180 O 22 -C 23 1.43000 N 3 -N 5 1.39180 C 30 -C 31 1.50025 C 23 -C 24 1.50025…”

Section: Degradation Byproducts and Molecular Structureunclassified

“…Titanium dioxide (TiO 2 ) is one of the most investigated semiconductors due to its biological and chemical properties, low cost, negligible toxicity, and high performance [4]. Besides pesticide removal, TiO 2 has also been applied in other fields [5][6][7], including environmental purification [8,9], food industry [10], health care [11] and agriculture [12]. Although TiO 2 is relatively new to agriculture, it has attracted the attention of an interdisciplinary team of researchers for the sustainable agriculture in the past few years [13].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Photocatalytic Degradation of Profenofos and Triazophos Residues in the Chinese Cabbage, Brassica chinensis, Using Ce-Doped TiO2

et al. 2019

View full text Add to dashboard Cite

Pesticides have revolutionized the modern day of agriculture and substantially reduced crop losses. Synthetic pesticides pose a potential risk to the ecosystem and to the non-target organisms due to their persistency and bioaccumulation in the environment. In recent years, a light-mediated advanced oxidation processes (AOPs) has been adopted to resolve pesticide residue issues in the field. Among the current available semiconductors, titanium dioxide (TiO2) is one of the most promising photocatalysts. In this study, we investigated the photocatalytic degradation of profenofos and triazophos residues in Chinese cabbage, Brassica chinensis, using a Cerium-doped nano semiconductor TiO2 (TiO2/Ce) under the field conditions. The results showed that the degradation efficiency of these organophosphate pesticides in B. chinensis was significantly enhanced in the presence of TiO2/Ce. Specifically, the reactive oxygen species (ROS) contents were significantly increased in B. chinensis with TiO2/Ce treatment, accelerating the degradation of profenofos and triazophos. Ultra-performance liquid chromatography–mass spectroscopy (UPLC-MS) analysis detected 4-bromo-2-chlorophenol and 1-phenyl-3-hydroxy-1,2,4-triazole, the major photodegradation byproducts of profenofos and triazophos, respectively. To better understand the relationship between photodegradation and the molecular structure of these organophosphate pesticides, we investigated the spatial configuration, the bond length and Mulliken atomic charge using quantum chemistry. Ab initio analysis suggests that the bonds connected by P atom of profenofos/triazophos are the initiation cleavage site for photocatalytic degradation in B. chinensis.

show abstract

Section: Degradation Byproducts and Molecular Structurementioning

confidence: 99%

Section: Degradation Byproducts and Molecular Structureunclassified

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Photocatalytic Degradation of Profenofos and Triazophos Residues in the Chinese Cabbage, Brassica chinensis, Using Ce-Doped TiO2

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The oxidizing and reducing nature of photo-generated holes and electrons, respectively, in TiO2 produce superoxide [1,2]. TiO2 nanoparticle films are used in photo semiconductor, photo-oxidation of water and photo-catalysis [3,4]. Photo semiconducting titanium dioxide thin films are important in processes where the transparency of the film required.…”

Section: Introductionmentioning

confidence: 99%

Effect of Concentration Variation on Optical and Structural Properties of TiO2 Thin Films

Ezike

2020

J. Mod. Mater.

View full text Add to dashboard Cite

Concentrations in weight percent (5- 25 wt %) of TiO2 films used to optimize the film formation. The TiO2 films on glass substrates successfully obtained by spin-coating process using TiO2 nanopowder as precursor. Ultraviolet-Visible (UV-Vis), Scanning Electron Microscopy (SEM) equipped with Electron Diffraction X-ray (EDX) and X-ray Diffractometer (XRD) techniques used to characterize the films. The result of electron transport material (TiO2) showed that film prepared from 15 wt % of TiO2 solution and annealed at 450 has highest transmittance at visible light region with indirect optical band gap of 3.24 eV which corresponds to wavelength of 382 nm whereas 20 wt % has indirect band gap of 2.99 nm equivalent to 414.7 nm . The chemical analysis from Electron Diffraction Spectroscopy (EDS) of the material shows titanium and oxygen present at L and K-shells, respectively. The sample crystallized with preferred orientation at (101) from XRD analysis.

show abstract

“…Fotokatalis semikonduktor merupakan teknologi yang menjanjikan untuk pemurnian lingkungan khususnya limbah cair melalui degradasi polutan dengan memanfaatkan energi matahari menjadi energi kimia [1,15]. Titanium oksida (TiO2) merupakan salah satu material semikonduktor yang telah banyak digunakan pada sistem ini karena sifat fotolistrik yang sangat baik, tidak beracun, biaya rendah dan stabilitas tinggi [6,12,13,17]. Namun, laju rekombinasi pasangan lubang elektron pembawa muatan yang begitu cepat dan rentang respon cahaya yang sempit, menjadi masalah serius yang menghambat proses fotokatalitik dalam aplikasi praktisnya [11,8]…”

Section: Pendahuluanunclassified

Rekayasa Nano Komposit Titanium Oskida Sebagai Katalis Pereduksi Zat Warna Tekstil

et al. 2019

View full text Add to dashboard Cite

The core shell structure of TiO2@SiO2@ferrite(Ni-Cu-Zn) as composite nanoparticles for magnetic photocatalyst were successfully prepared in this study. These particles were synthesized continually by the sol-gel method and they are tested for their performance using MB dye solution. The magnetic core particles used in the synthesis were (Ni-Cu-Zn) ferrite with size of 20-60 nm, while SiO2 and TiO2 layers were formed using tetraethoxysilane and tetrabutly titanate. Some characterizations and testinghavecarried out to investigate the crystal structure, magnetic properties, surface conditions and performance of these particles. The results show that the anatase crystal structure of TiO2 was obtained on the outer shell of the particle, while the magnetization value and surface area were achieved at 4.74 emu/g and 126,831 m 2 /g, respectively. The nanoparticles of composite size were obtained about 10 to 40 nm with the shell thickness up to 4 nm. The performance results of photodegradation was quite good for reducing MB dye up to 63.37%. ABSTRAK Partikel nano komposit berstruktur kulit titania (TiO2) atau TiO2@SiO2@ferit(Ni-Cu-Zn) sebagai bahan fotokatalis magnetik sukses direkayasa pada pada penelitian ini. Partikel ini disintesis secara bertahap dengan metode sol-gel dan kemudian diuji performanya menggunakan zat pewarna MB. Partikel magnetik dasar yang digunakan adalah ferit (Ni-Cu-Zn), sedangkan lapisan SiO2 dan TiO2 dibentuk dari tetraethoxysilane dan tetrabutly titanate. Beberapa karakterisasi dan pengujian dilakukan untuk menyelidiki struktur kristal, sifat magnet, kondisi permukaaan dan performa dari partikel ini. Hasil pengujian menunjukkan bahwa struktur kristal anatase TiO2 diperoleh pada permukaan terluar patikel, sementara nilai magnetisasi dan luas permukaan partikel didapatkan pada 4.74 emu/g dan 126.831 m 2 /g. Ukuran partikel nano komposit berstruktur kulit titania diperoleh antara 10 -40 nm dengan ketebalan lapisan hingga 4 nm. Hasil unjuk kerja fotokatalis partikel ini menunjukkan bahwa performa fotodegradasi cukup baik dalam mereduksi zat pewarna MB hingga 63.37 %.

show abstract

The Application of Nano-TiO2 Photo Semiconductors in Agriculture

Cited by 89 publications

References 66 publications

Photocatalytic Degradation of Profenofos and Triazophos Residues in the Chinese Cabbage, Brassica chinensis, Using Ce-Doped TiO2

Photocatalytic Degradation of Profenofos and Triazophos Residues in the Chinese Cabbage, Brassica chinensis, Using Ce-Doped TiO2

Effect of Concentration Variation on Optical and Structural Properties of TiO2 Thin Films

Rekayasa Nano Komposit Titanium Oskida Sebagai Katalis Pereduksi Zat Warna Tekstil

Contact Info

Product

Resources

About