Assembly and Formation of Biomorphic Tin Dioxide by a Biomimetic Sol–Gel Approach Involving Glycoprotein

Abstract

Three diverse layers of eggshell membrane (ESM) were introduced in a biogenic sol–gel technique for the synthesis of hierarchical SnO2 nanomaterials with corresponding configurations. Typically, the biomorphic replication of the interwoven inner eggshell membrane was systematically investigated by controlling synthesis conditions such as pH value, dipping time, and calcination temperature. The as‐prepared SnO2 tubes consisting of interconnected 5‐nm nanocrystallite units were successfully interwoven into ESM‐morphic films. Herein, the biomaterial ESM served both as the physical substrate and the functional macromolecule template to realize the precision replication, by the interactions between ESM macromolecules (containing carboxyl, hydroxy, amino groups, etc.) and Sn colloid ingredients. Moreover, some biomacromolecules also acted as the surfactant to yield small‐scaled and well‐distributed SnO2 nanocrystallites based on the strong bondage of short‐chained amino acids within ESM glycoprotein with SnO2 nuclei. This technique can be attributed to a biomimetic sol–gel process and is widely applicable to the synthesis of other functional material systems. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

Towards a broad-operation window for stable CO2electroreduction to HCOOH by a design involving upcycling electroplating sludge-derived Sn@N/P-doped carbon

“…2E, peaks related to protein could be clearly observed at ∼1650, ∼1500 and ∼1248 cm −1 (amide I, II and III, respectively), with additional peaks related to phosphates observed at around 960 cm −1 , which provided a source for the N and P elements. 45,46 After adsorption and subsequent calcination, a new peak around 580 cm −1 appeared for Sn@NPC composites, which belonged to the stretching vibration of the Sn-O bond. 45,47 Meanwhile, Fig.…”

Biologically Inspired Synthesis Route to Three‐Dimensionally Structured Inorganic Thin Films

“…In addition, synthesis techniques that mimic biomineralization processes have received much attention because of the inherently benign and malleable conditions under which biominerals are produced. An increasing number of research groups have been studying biomimetic [7] or biologically inspired [8] pathways towards preparation of semiconductor materials in the past few years using biological principles of materials formation.…”

Diseño de bioplantillas para la síntesis de TiO₂

“…34 Algunas estructuras biológicas han sido utilizadas para la construcción de materiales inorgánicos jerárquicos, que incluyen ADN, polisacáridos, proteínas, virus, diatomeas y placas óseas, alas de mariposa, conchas, fibras de seda, cabello, madera y plantas (hojas, granos de polen), etc. 14,25,[35][36][37][38][39] Generalmente en las síntesis biológicas, las proteínas son las responsables del alto control en la formación de los materiales inorgánicos con tamaño, estructura, forma, orientación espacial y organización bien definida; así como de las propiedades mecánicas que superan a los materiales sintéticos del mundo inorgánico. 15, 25, 40…”

“…El proceso sol-gel ofrece varias ventajas sobre otros métodos, pues implica un procedimiento simple, a baja temperatura y con gran homogeneidad 14 . Una vez que las bioplantillas se introducen en el sol, una serie de intrincadas reacciones de hidrólisis y condensación suceden durante la transición sol-gel y cuyo resultado son estructuras más o menos ordenadas.…”

“…Esto podría permitir fácilmente la preparación de óxidos metálicos jerarquizados tales como TiO 2 , SiO 2 , ZnO, ZrO 2 , etc. Además, de acuerdo a Dong et al 14 la síntesis biomimética asociada con el proceso sol-gel sería la técnica ideal para el diseño y fabricación de materiales funcionales con propiedades físicas y químicas predeterminadas.…”