Size/shape control of gold nanoparticles synthesized by alternating current glow discharge over liquid: the role of pH
In this study, we report the influence of pH level in HAuCl _4 solution on the size and shape of gold nanoparticles synthesized by an alternating current glow discharge on liquid. The results indicate there have three distinct groups in the size/shape of gold nanoparticles due to varying pH, one at...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2019-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ab3038 |
| _version_ | 1797747159513169920 |
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| author | Phuoc Van Thai Shinnosuke Abe Kenichiro Kosugi Nobuo Saito Kazumasa Takahashi Toru Sasaki Takashi Kikuchi |
| author_facet | Phuoc Van Thai Shinnosuke Abe Kenichiro Kosugi Nobuo Saito Kazumasa Takahashi Toru Sasaki Takashi Kikuchi |
| author_sort | Phuoc Van Thai |
| collection | DOAJ |
| description | In this study, we report the influence of pH level in HAuCl _4 solution on the size and shape of gold nanoparticles synthesized by an alternating current glow discharge on liquid. The results indicate there have three distinct groups in the size/shape of gold nanoparticles due to varying pH, one at pH ≤ 8, one at pH 9 and the other at higher than 9. At pH ≤ 8, single spherical gold nanoparticles with an average size of 5.7 nm and coral-shaped clusters aggregated from these gold nanoparticles were formed after 10 min of alternating current glow discharge on liquids. In the case of pH 9, spherical AuNPs with the size of 120 nm and coral-shaped clusters with the size up to 100 nm were generated after 10 min of discharge. At pH ≥ 10, roughly spherical gold nanoparticles with an average size of 100 nm (at pH 10) to 30.6 nm (at pH 13) were generated after 10 min of discharge. There has a decrease in the average size of gold nanoparticles when pH increases from 10 to 13. Our findings open a new way to control the size/shape of gold nanoparticles synthesized by plasma over liquid via pH control in the precursor solution. |
| first_indexed | 2024-03-12T15:48:05Z |
| format | Article |
| id | doaj.art-96b4047fe8d74346a2987bad130742b3 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:48:05Z |
| publishDate | 2019-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-96b4047fe8d74346a2987bad130742b32023-08-09T15:21:32ZengIOP PublishingMaterials Research Express2053-15912019-01-016909507410.1088/2053-1591/ab3038Size/shape control of gold nanoparticles synthesized by alternating current glow discharge over liquid: the role of pHPhuoc Van Thai0https://orcid.org/0000-0001-5620-5943Shinnosuke Abe1Kenichiro Kosugi2Nobuo Saito3Kazumasa Takahashi4Toru Sasaki5https://orcid.org/0000-0003-3175-0851Takashi Kikuchi6Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology and Education , HCMC 700000, Vietnam; Department of Energy and Environment Science, Nagaoka University of Technology , Nagaoka 940-2188, JapanDepartment of Electrical, Electronics and Information Engineering, Nagaoka University of Technology , Nagaoka 940-2188, JapanDepartment of Materials Science and Technology, Nagaoka University of Technology , Nagaoka 940-2188, JapanDepartment of Materials Science and Technology, Nagaoka University of Technology , Nagaoka 940-2188, JapanDepartment of Electrical, Electronics and Information Engineering, Nagaoka University of Technology , Nagaoka 940-2188, JapanDepartment of Electrical, Electronics and Information Engineering, Nagaoka University of Technology , Nagaoka 940-2188, JapanDepartment of Electrical, Electronics and Information Engineering, Nagaoka University of Technology , Nagaoka 940-2188, Japan; Department of Nuclear System Safety Engineering, Nagaoka University of Technology , Nagaoka 940-2188, JapanIn this study, we report the influence of pH level in HAuCl _4 solution on the size and shape of gold nanoparticles synthesized by an alternating current glow discharge on liquid. The results indicate there have three distinct groups in the size/shape of gold nanoparticles due to varying pH, one at pH ≤ 8, one at pH 9 and the other at higher than 9. At pH ≤ 8, single spherical gold nanoparticles with an average size of 5.7 nm and coral-shaped clusters aggregated from these gold nanoparticles were formed after 10 min of alternating current glow discharge on liquids. In the case of pH 9, spherical AuNPs with the size of 120 nm and coral-shaped clusters with the size up to 100 nm were generated after 10 min of discharge. At pH ≥ 10, roughly spherical gold nanoparticles with an average size of 100 nm (at pH 10) to 30.6 nm (at pH 13) were generated after 10 min of discharge. There has a decrease in the average size of gold nanoparticles when pH increases from 10 to 13. Our findings open a new way to control the size/shape of gold nanoparticles synthesized by plasma over liquid via pH control in the precursor solution.https://doi.org/10.1088/2053-1591/ab3038AC glow dischargepHreduction reactiongold nanoparticlesmorphologyreducing species |
| spellingShingle | Phuoc Van Thai Shinnosuke Abe Kenichiro Kosugi Nobuo Saito Kazumasa Takahashi Toru Sasaki Takashi Kikuchi Size/shape control of gold nanoparticles synthesized by alternating current glow discharge over liquid: the role of pH Materials Research Express AC glow discharge pH reduction reaction gold nanoparticles morphology reducing species |
| title | Size/shape control of gold nanoparticles synthesized by alternating current glow discharge over liquid: the role of pH |
| title_full | Size/shape control of gold nanoparticles synthesized by alternating current glow discharge over liquid: the role of pH |
| title_fullStr | Size/shape control of gold nanoparticles synthesized by alternating current glow discharge over liquid: the role of pH |
| title_full_unstemmed | Size/shape control of gold nanoparticles synthesized by alternating current glow discharge over liquid: the role of pH |
| title_short | Size/shape control of gold nanoparticles synthesized by alternating current glow discharge over liquid: the role of pH |
| title_sort | size shape control of gold nanoparticles synthesized by alternating current glow discharge over liquid the role of ph |
| topic | AC glow discharge pH reduction reaction gold nanoparticles morphology reducing species |
| url | https://doi.org/10.1088/2053-1591/ab3038 |
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