Porous and conductive SnO2 ceramics as a promising nanostructured substrate to host photocatalytic hematite coatings: Towards low cost solar-driven water splitting

Hematite photoanodes for water splitting from directed assembly of Prussian blue onto CuO–Sb2O5–SnO2 ceramics

“…4(f)). As previously reported, 39 the bare CuO–Sb 2 O 5 –SnO 2 ceramics have an average pore size of about 13.9 nm, a surface area of 1.343 m 2 g −1 , a density of about 6.27 g cm −3 and have an electrical conductivity of 120 S m −1 . The surfaces of the ceramic grains in bare ceramics are smooth (Fig.…”

“…Specifically, this approach can be used to modify the photoactive surface of hematite photoelectrodes grown on SnO 2 -based ceramics. 39,40 Such hematite photoelectrodes, grown using the metal-organic chemical vapor deposition (MO-CVD) technique on a free-standing substrate made from CuO-Sb 2 O 5 -SnO 2 ceramics, exhibit relatively high photocurrent (0.56 mA cm À2 at 1.23 V vs. RHE under AM1.5G radiation), making them promising candidates for further development. 39 In this study, we demonstrate the feasibility of creating a functional nanometric coating (Fe 2 O 3 photocatalytic layer) on CuO-Sb 2 O 5 -SnO 2 ceramics using the direct assembly method.…”

“…39,40 Such hematite photoelectrodes, grown using the metal-organic chemical vapor deposition (MO-CVD) technique on a free-standing substrate made from CuO-Sb 2 O 5 -SnO 2 ceramics, exhibit relatively high photocurrent (0.56 mA cm À2 at 1.23 V vs. RHE under AM1.5G radiation), making them promising candidates for further development. 39 In this study, we demonstrate the feasibility of creating a functional nanometric coating (Fe 2 O 3 photocatalytic layer) on CuO-Sb 2 O 5 -SnO 2 ceramics using the direct assembly method. The reported structures and materials are discussed based on the data from photoelectrochemical and electrochemical impedance measurements, Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and energydispersive X-ray spectroscopy (EDX).…”

Advances in Functional Ceramics for Water Splitting: A Comprehensive Review

“…Among the many methods for producing hydrogen, water splitting has emerged as the green avenue in this quest [3,4]. Among the various materials explored for water splitting, functional ceramics have gained significant attention due to their unique combination of properties, including high chemical stability, robust mechanical strength, and tunable electronic and optical characteristics [5][6][7][8][9][10]. This review aims to provide a comprehensive overview of the recent advancements in the field of functional ceramics for water splitting applications, shedding light on the key mechanisms, challenges, and prospects associated with this burgeoning research area.…”

Additives in Nanocrystalline Tin Dioxide: Recent Progress in the Characterization of Materials for Gas Sensor Applications

“…Tin dioxide SnO 2 is an important representative of the group of n-type wide-bandgap (E g = 3.6 eV) semiconductor oxides (SnO 2 , ZnO, In 2 O 3 , TiO 2 , and WO 3 [1]) with a unique combination of high transparency, electrical conductivity, high surface reactivity, and stability in air. Tin dioxide has huge potential and is widely studied and used for applications in different fields [2,3], in particular for the manufacturing of optically passive components in a number of devices [4][5][6], including photodetectors [7][8][9][10][11][12], solar cells [13][14][15][16], conductive ceramics [17][18][19][20][21][22], varistors [23], transparent electrodes [24][25][26][27][28], electrochromic coatings [29][30][31][32][33][34], transistors [35][36][37], components of fuel cells [38] and metal-ion batteries [39], catalysts [40], and chemical sensors [2,[41][42][43]…”