Surfactant-free synthesis of porous Au by a urea complex

Qiang Zhang; Biao Zang; Shaozhen Wang

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Surfactant-free synthesis of porous Au by a urea complex

机译：脲络合物无表面活性剂合成多孔金

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We report a facile surfactant-free synthetic method to obtain porous and hollow Au nanoparticles using only urea and HAuCl _(4) ·4H _(2) O as precursors at 200 °C. The formation mechanism was investigated through X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscopy. Moreover, the prepared Au nanocrystals present superior catalytic performance for the reduction of 4-nitrophenol in comparison with solid Au nanoparticles. The catalytic efficiency of porous and hollow Au was nearly 6 times higher than that of Au nanoparticles. Furthermore, the porous and hollow Au maintained excellent stability even after 10 catalytic cycles. Therefore, the as-synthesized porous Au nanoparticles will have potential applications in organic catalysis, biosensing, drug delivery, water pollutant removal, and so on.

机译：我们报告了一种简便的无表面活性剂的合成方法，该方法仅使用尿素和HAuCl _（4）·4H _（2）O作为前体在200°C下获得多孔和中空的Au纳米颗粒。通过X射线衍射，扫描电子显微镜和高分辨率透射电子显微镜研究了形成机理。而且，与固体Au纳米粒子相比，所制备的Au纳米晶体呈现出对于还原4-硝基苯酚的优异的催化性能。多孔和中空Au的催化效率比Au纳米颗粒高近6倍。此外，即使在十个催化循环之后，多孔和中空的Au仍保持优异的稳定性。因此，合成后的多孔金纳米颗粒将在有机催化，生物传感，药物传递，水污染物去除等方面具有潜在的应用。

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《RSC Advances》 |2019年第40期|共5页
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Qiang Zhang; Biao Zang; Shaozhen Wang;
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1. Surfactant-free synthesis of porous Au by a urea complex [J] . Zhang Qiang, Zang Biao, Wang Shaozhen RSC Advances . 2019,第40期

机译：通过尿素复合物无孔Au的表面活性剂合成
2. Synthesis and crystal structure of gold(I) complexes with triazole and triphenylphosphine ligands: monomeric complex [Au(1,2,3-L)(PPh3)] and dimeric complex [Au(1,2,4-L)(PPh3)](2) (HL = triazole) through an Au-Au bond in the solid state [J] . Nomiya K., Ohsawa K., Tsuda K., Journal of the Chemical Society, Dalton Transactions. Inorganic Chemistry . 1998,第24期

机译：具有三唑和三苯基膦配体的金（I）配合物的合成和晶体结构：单体配合物[Au（1,2,3-L）（PPh3）]和二聚体配合物[Au（1,2,4-L）（PPh3） ]（2）（HL =三唑）通过固态的Au-Au键
3. AUROPHILICITY AT SULFUR CENTERS - SYNTHESIS AND REACTIVITY OF THE COMPLEX [S(AU(2)DPPF)] - FORMATION OF POLYNUCLEAR SULFUR-CENTERED COMPLEXES - CRYSTAL STRUCTURES OF [S(AU(2)DPPF)]CENTER-DOT-2CHCL(3), [(MU-AU(2)DPPF)(S(AU(2)DPPF))(2)](OTF)(2)CENTER-D [J] . Canales F, Gimeno MC, Laguna A, Journal of the American Chemical Society . 1996,第20期

机译：硫中心的自噬性-复合物[S（AU（2）DPPF）]的合成和反应性-以硫为中心的多核复合物的形成-[S（AU（2）DPPF）] CENTER-DOT-2CHCL（3）的晶体结构），[（MU-AU（2）DPPF）（S（AU（2）DPPF））（2）]（OTF）（2）CENTER-D
4. Biomimetic hydroxyapatite porous microspheres with co-substituted essential trace elements: surfactant-free hydrothermal synthesis,enhanced degradation and drug release [C] . Kaili Lin, Jiang Chang World biomaterials congress . 2012

机译：具有共取代的必需微量元素的仿生羟基磷灰石多孔微球：无表面活性剂的水热合成，增强的降解和药物释放
5. The synthesis and characterization of thermo-sensitive colored hydrogel film and surfactant-free porous polystyrene three-dimensional network. [D] . Zhou, Bo. 2001

机译：热敏彩色水凝胶膜和无表面活性剂的多孔聚苯乙烯三维网络的合成与表征。
6. Salt-Mediated Au-Cu Nanofoam and Au-Cu-Pd Porous Macrobeam Synthesis [O] . Fred J. Burpo, Enoch A. Nagelli, Lauren A. Morris, 2018

机译：盐介金-铜纳米泡沫和金-铜-钯多孔大梁的合成
7. Surfactant-free synthesis of porous Au by a urea complex [O] . Qiang Zhang, Biao Zang, Shaozhen Wang 2019

机译：通过尿素复合物无孔Au的表面活性剂合成
8. Cluster Complex Metathesis. Synthesis, Structures, and Dynamic Behaviour of Bi- and Tri-Metallic Hexanuclear Cluster Complexes (MM'Ru4(millimicron3-H)2(CO)12(PPh3)2) (M ==M' == CU, Ag, or Au;M == CU, M' == Ag or Au; M == Ag, M' == [R] . Freeman, M. J., Green, M., Orphen, A. G., 1983

机译：簇复杂复分解。双金属和三金属六核簇合物（mm'Ru4（millimicron3-H）2（CO）12（pph3）2）（m == m'== CU，ag或au）的合成，结构和动态行为; m == CU，m'== ag或au; m == ag，m'==

Surfactant-free synthesis of porous Au by a urea complex

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