Self-template synthesis of mesoporous metal oxide spheres with metal-mediated inner architectures and superior sensing performance

Gen Wang, Jing Qin, Xinran Zhou, Yonghui Deng, Huanting Wang, Yongxi Zhao, Jing Wei

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The development of a general strategy to synthesize mesoporous metal oxide spheres (MMOSs) with tailorable compositions and architectures is desirable and challenging. Herein, a general self-template strategy is demonstrated for the synthesis of MMOSs with tunable compositions (i.e., ZnO, Al2O3, Co3O4, Fe2O3, CuO) and metal-mediated inner architectures via thermal decomposition of metal-phenolic coordination polymers (MPCPs). The metal species in MPCPs can obviously influence the decomposition temperature of the polymer networks (Td). The inner architectures of MMOSs are determined by Td and the crystallization temperature of metal oxides (Tc). The MMOSs show solid inner architectures when Td > Tc or Td < Tc and hollow structure when Td ≈ Tc. Encouraged by their high surface area and accessible mesopores, gas sensors based on MMOSs (i.e., ZnO) are fabricated, which shows a low working temperature (250 °C) for detection of ethanol gas. The MMOSs (i.e., Co3O4) can further be used to fabricate sensing platform for detecting DNA analogue of miRNA-21 (a biomarker abnormally expressed in most of solid tumors). Such MMOSs show high sensitivity (0.19 × 10−9m) and can even efficiently distinguish the target DNA from single-, double- and triple-base mismatched DNA.

Original languageEnglish
Article number1806144
Number of pages8
JournalAdvanced Functional Materials
Volume28
Issue number51
DOIs
Publication statusPublished - 19 Dec 2018

Keywords

  • coordination polymers
  • mesoporous materials
  • metal oxide
  • nuclei acids
  • sensors

Cite this

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abstract = "The development of a general strategy to synthesize mesoporous metal oxide spheres (MMOSs) with tailorable compositions and architectures is desirable and challenging. Herein, a general self-template strategy is demonstrated for the synthesis of MMOSs with tunable compositions (i.e., ZnO, Al2O3, Co3O4, Fe2O3, CuO) and metal-mediated inner architectures via thermal decomposition of metal-phenolic coordination polymers (MPCPs). The metal species in MPCPs can obviously influence the decomposition temperature of the polymer networks (Td). The inner architectures of MMOSs are determined by Td and the crystallization temperature of metal oxides (Tc). The MMOSs show solid inner architectures when Td > Tc or Td < Tc and hollow structure when Td ≈ Tc. Encouraged by their high surface area and accessible mesopores, gas sensors based on MMOSs (i.e., ZnO) are fabricated, which shows a low working temperature (250 °C) for detection of ethanol gas. The MMOSs (i.e., Co3O4) can further be used to fabricate sensing platform for detecting DNA analogue of miRNA-21 (a biomarker abnormally expressed in most of solid tumors). Such MMOSs show high sensitivity (0.19 × 10−9m) and can even efficiently distinguish the target DNA from single-, double- and triple-base mismatched DNA.",
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Self-template synthesis of mesoporous metal oxide spheres with metal-mediated inner architectures and superior sensing performance. / Wang, Gen; Qin, Jing; Zhou, Xinran; Deng, Yonghui; Wang, Huanting; Zhao, Yongxi; Wei, Jing.

In: Advanced Functional Materials, Vol. 28, No. 51, 1806144, 19.12.2018.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Wang, Gen

AU - Qin, Jing

AU - Zhou, Xinran

AU - Deng, Yonghui

AU - Wang, Huanting

AU - Zhao, Yongxi

AU - Wei, Jing

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