Photoelectrochemical response and corrosion behavior of CdS/TiO2 nanocomposite films in an aerated 0.5 M NaCl solution

Earth‐Abundant Tin Sulfide‐Based Photocathodes for Solar Hydrogen Production

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appropriately engineered, separate and deliver photogenerated carriers to electrocatalysts for carrying out the desired chemistry. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] Recent efforts have focused on developing cost-effective and stable light-absorber materials with relatively narrow bandgap (that absorbs light over a broad spectral range (300-900 nm)) for maximizing stored solar energy, an absolute necessity for large-scale deployment.Metal chalcogenide semiconducting materials from IV to VI groups have emerged as one such group of promising light-absorber materials for photoelectrochemical (PEC) applications because of their narrow bandgap, earth abundance, and low materials processing cost. [15,16] Specifically, tin monosulfide (SnS) has been studied for water splitting because of its narrow optical bandgap of 1.1-1.4 eV and favorable conduction band energetics for H 2 evolution.

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“…DOI: 10.1002/advs.201700362 appropriately engineered, separate and deliver photogenerated carriers to electrocatalysts for carrying out the desired chemistry. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] Recent efforts have focused on developing cost-effective and stable light-absorber materials with relatively narrow bandgap (that absorbs light over a broad spectral range (300-900 nm)) for maximizing stored solar energy, an absolute necessity for large-scale deployment.…”

“…Artificial photosynthesis provides means for directly converting photon energy in sunlight to chemical potential energy by producing molecular products, which can be later used as fuels and chemicals. Traditionally, these systems are based on solid‐state semiconductor‐based photoelectrodes, which when appropriately engineered, separate and deliver photogenerated carriers to electrocatalysts for carrying out the desired chemistry . Recent efforts have focused on developing cost‐effective and stable light‐absorber materials with relatively narrow bandgap (that absorbs light over a broad spectral range (300–900 nm)) for maximizing stored solar energy, an absolute necessity for large‐scale deployment.…”

Research progress of TiO2 photocathodic protection to metals in marine environment

“…Li et al (2011) coated CdS nanoparticles onto TiO 2 nanotube arrays, and the composite could protect the metals under UV and visible light. However, CdS is sensitive to photocorrosion, and Boonserm et al (2017) investigated the reaction during the measurement and found that corrosion of the nanocomposite fi lm decreased the photocurrent. However, it is diffi cult to simultaneously achieve both high electron transmission effi ciency and superior redox capacity.…”

Preparation and Photocathodic Protection Properties of ZnO/TiO2 Heterojunction Film Under Simulated Solar Light

“…Therefore, in order to improve the photo-induced charge separation, promote the electron yield, and thus improve the photocathodic protection performance, it is necessary to make some modifications to TiO 2 , and the combination of TiO 2 with various materials has been studied in recent years. For example, its combination with oxide semiconductors (Fe 2 O 3 [8], NiO [15], β-Bi 2 O 3 [16]), sulfides (Bi 2 S 3 [2], SnS [17], CdS [18], Ag 2 S [19], MnS [20]), selenides (CdSe [4], Bi 2 Se 3 [21], NiSe 2 [22], WSe 2 [23]), perovskites (SrTiO 3 [3]), and other materials (CoFe 2 O 4 [24], ZnFeO 4 [7], ZnIn 2 S 4 [9], ZnWO 4 [25], BiFeO 3 [26]). Other heterojunction materials used in the PEC field have also been deeply studied to improve their photo-electric conversion efficiency and stability, including for water splitting [27,28] and solar redox flow battery applications [29,30,31], which is can be used as a reference in photocathodic protection systems.…”