Synthesis of flower-liked twin crystal ternary Ni/NiS/Zn0.2Cd0.8S catalyst for highly efficient hydrogen production

Mo-Doped/Ni-supported ZnIn2S4-wrapped NiMoO4 S-scheme heterojunction photocatalytic reforming of lignin into hydrogen

“…Co-catalysts with a large work function, such as noble metals, transition metal sulfides/phosphides, and non-noble transition metals, can become electron capture centers and enhance photogenerated carrier separation efficiency, thereby improving the photocatalytic hydrogen evolution kinetic process. 23–25 For example, Sun et al prepared Ni/NiS/Zn 0.2 Cd 0.8 S photocatalytic composites via hydrothermal, precipitation, and light deposition processes. Ni and NiS in these composites were used as co-catalysts of composite materials, which effectively improved the photogenerated electron–hole separation; thus, the optimal composite presents the H 2 evolution rate of 4.1 mmol g −1 h −1 .…”

“…Ni and NiS in these composites were used as co-catalysts of composite materials, which effectively improved the photogenerated electron–hole separation; thus, the optimal composite presents the H 2 evolution rate of 4.1 mmol g −1 h −1 . 23 In addition, the S-scheme heterojunction is based on a built-in electric field, which can not only accelerate the separation efficiency of photogenerated carriers but also retain the higher oxidation/reduction potential of the photocatalysts. 26 Zou et al prepared the ZnIn 2 S 4 /In 2 O 3 S-scheme heterojunction composite photocatalyst through the process of hydrothermal and low-temperature self-polymerization.…”

Recent Developments in the Design of CdxZn1−xS‐Based Photocatalysts for Sustainable Production of Hydrogen

“…Tang et al prepared Cd 0.5 Zn 0.5 S/g‐C 3 N 4 /MoS 2 composite photocatalyst, which showed an H 2 production rate of 4.91 mmol g −1 h −1 with 5% MoS 2 and 30% g‐C 3 N 4 with AQY of 34.2% at 420 nm. [ 178 ] Recently, Sun et al [ 179 ] demonstrated the fabrication of novel flower‐like ternary Ni/NiS/Cd 0.8 Zn 0.2 S composite which showed an H 2 generation rate of 4.15 mmol h −1 g −1 which was about 83 times higher than that of pure Cd 0.8 Zn 0.2 S. The H 2 generation activity of the ternary heterostructures is shown in Table 3 .…”

Preparation of a Water‐Soluble ZnXCd1‐XS Quantum Dot Photocatalyst at Room Temperature Assisted by 3‐Mercaptopropionic Acid

“…[15,16] Water-soluble QDs are candidates for photocatalytic degradation of organic pollutants and photocatalytic hydrogen production, such as Zn x Cd 1-x S quantum dots. [17,18] Unlike organic nanocrystals, which require complex treatment of the sample before photocatalytic testing, water-soluble QDs has the advantage of direct photocatalytic reaction without ligand exchange. [17][18][19][20][21][22][23][24][25][26] Unfortunately, the current scale of synthesis of water-soluble QDs ranges from a few milliliters to tens of milliliters, due to the limitations of reaction vessels such as three-port flasks and hydrothermal reactors, which also limit their practical application in water pollution treatment.…”

“…[17,18] Unlike organic nanocrystals, which require complex treatment of the sample before photocatalytic testing, water-soluble QDs has the advantage of direct photocatalytic reaction without ligand exchange. [17][18][19][20][21][22][23][24][25][26] Unfortunately, the current scale of synthesis of water-soluble QDs ranges from a few milliliters to tens of milliliters, due to the limitations of reaction vessels such as three-port flasks and hydrothermal reactors, which also limit their practical application in water pollution treatment. [17,19,21,[27][28][29][30] In the preparation process of ZCS water-soluble quantum dots, cation and ligand coordinate to form precursor solution.…”