Limits...
Low-temperature precipitation synthesis of flower-like ZnO with lignin amine and its optical properties.

Miao TT, Sun DX, Guo YR, Li C, Ma YL, Fang GZ, Pan QJ - Nanoscale Res Lett (2013)

Bottom Line: It is found that the morphology of ZnO and its specific surface area are capable of being tuned by varying the added lignin amine amount.Using the optimal 10 mL lignin amine, the synthesized ZnO exhibits flower-like morphology with proper specific surface area.Their intensities were revealed to depend on the added lignin amine amount as well as on the molar ratio of Zn2+/OH-.

View Article: PubMed Central - HTML - PubMed

Affiliation: Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), Materials Science and Engineering College, Northeast Forestry University, Harbin 150040, China. guoyrnefu@163.com.

ABSTRACT
A facile precipitation method has been developed to synthesize ZnO with [bis(2-aminoethyl)amino]methyl lignin (lignin amine) that is chemically modified from low-cost pulp industrial lignin. The obtained ZnO crystallites have been characterized to exhibit a hexagonal wurtzite structure, and their sizes have been determined at ca. 24 nm (mean value). These ZnO nanocrystallites are of high purity and well crystallized. Our present synthetic approach apparently exempts the commonly used calcining purification procedure. It is found that the morphology of ZnO and its specific surface area are capable of being tuned by varying the added lignin amine amount. Using the optimal 10 mL lignin amine, the synthesized ZnO exhibits flower-like morphology with proper specific surface area. Additionally, photoluminescence property of the obtainable ZnO displays two emissive bands at 383 nm (sharp) and in the range of 480 to 600 nm (broad) at room temperature. Their intensities were revealed to depend on the added lignin amine amount as well as on the molar ratio of Zn2+/OH-. The present investigation demonstrates that our method is simple, eco-friendly, and cost-effective for the synthesis of small-size ZnO materials.

No MeSH data available.


XRD patterns of calcined and non-calcined ZnO-10.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4016318&req=5

Figure 1: XRD patterns of calcined and non-calcined ZnO-10.

Mentions: The typical XRD pattern of ZnO-10 prepared from precipitation (i.e., non-calcined ZnO-10) is presented in Figure 1, compared with that of the calcined ZnO-10. It is shown that the entire diffraction peaks of the non-calcined ZnO-10 match well with those of wurtzite hexagonal phase ZnO (JCPDS card no. 36–1451). Moreover, no peaks of impurities are found. This demonstrates that our ZnO is pure and well crystallized. The intensity of the (002) diffraction is higher than that of (100), which suggests that the as-prepared ZnO has weak preferential growth along the c-axis. Meanwhile, both the calcined and non-calcined ZnOs have approximately identical XRD patterns. Their average crystallite sizes were calculated to be about 24 nm using the Debye-Scherrer formula, building on peaks of (101), (002), and (100) planes. Therefore, the further calcining purification usually used in many syntheses is not required anymore while applying our synthetic approach. Moreover, lignin is the second most abundant natural raw material and conveniently available as a by-product of the pulp industry [16]. The method using a lignin derivative to prepare ZnO nanocrystallites is cost-effective.


Low-temperature precipitation synthesis of flower-like ZnO with lignin amine and its optical properties.

Miao TT, Sun DX, Guo YR, Li C, Ma YL, Fang GZ, Pan QJ - Nanoscale Res Lett (2013)

XRD patterns of calcined and non-calcined ZnO-10.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4016318&req=5

Figure 1: XRD patterns of calcined and non-calcined ZnO-10.
Mentions: The typical XRD pattern of ZnO-10 prepared from precipitation (i.e., non-calcined ZnO-10) is presented in Figure 1, compared with that of the calcined ZnO-10. It is shown that the entire diffraction peaks of the non-calcined ZnO-10 match well with those of wurtzite hexagonal phase ZnO (JCPDS card no. 36–1451). Moreover, no peaks of impurities are found. This demonstrates that our ZnO is pure and well crystallized. The intensity of the (002) diffraction is higher than that of (100), which suggests that the as-prepared ZnO has weak preferential growth along the c-axis. Meanwhile, both the calcined and non-calcined ZnOs have approximately identical XRD patterns. Their average crystallite sizes were calculated to be about 24 nm using the Debye-Scherrer formula, building on peaks of (101), (002), and (100) planes. Therefore, the further calcining purification usually used in many syntheses is not required anymore while applying our synthetic approach. Moreover, lignin is the second most abundant natural raw material and conveniently available as a by-product of the pulp industry [16]. The method using a lignin derivative to prepare ZnO nanocrystallites is cost-effective.

Bottom Line: It is found that the morphology of ZnO and its specific surface area are capable of being tuned by varying the added lignin amine amount.Using the optimal 10 mL lignin amine, the synthesized ZnO exhibits flower-like morphology with proper specific surface area.Their intensities were revealed to depend on the added lignin amine amount as well as on the molar ratio of Zn2+/OH-.

View Article: PubMed Central - HTML - PubMed

Affiliation: Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), Materials Science and Engineering College, Northeast Forestry University, Harbin 150040, China. guoyrnefu@163.com.

ABSTRACT
A facile precipitation method has been developed to synthesize ZnO with [bis(2-aminoethyl)amino]methyl lignin (lignin amine) that is chemically modified from low-cost pulp industrial lignin. The obtained ZnO crystallites have been characterized to exhibit a hexagonal wurtzite structure, and their sizes have been determined at ca. 24 nm (mean value). These ZnO nanocrystallites are of high purity and well crystallized. Our present synthetic approach apparently exempts the commonly used calcining purification procedure. It is found that the morphology of ZnO and its specific surface area are capable of being tuned by varying the added lignin amine amount. Using the optimal 10 mL lignin amine, the synthesized ZnO exhibits flower-like morphology with proper specific surface area. Additionally, photoluminescence property of the obtainable ZnO displays two emissive bands at 383 nm (sharp) and in the range of 480 to 600 nm (broad) at room temperature. Their intensities were revealed to depend on the added lignin amine amount as well as on the molar ratio of Zn2+/OH-. The present investigation demonstrates that our method is simple, eco-friendly, and cost-effective for the synthesis of small-size ZnO materials.

No MeSH data available.