Solvothermal syntheses and characterization of one-dimensional (1,4-dabH2)Cu1.72Ag0.28SnSe4 (1) and (1,4-dabH2)Cu2SnSe4 (2)

Here, two seleniumstannates (1,4-dabH2)Cu1.72Ag0.28SnSe4 (1) and (1,4-dabH2)Cu2SnSe4 (2) (1,4-dab = 1,4-diaminobutane), were synthesized successfully via solvothermal method, and an organic amine as the structural directing agent. Two compounds have similar structures: inorganic anionic chains and doubly protonated [1,4-dabH2]2+ organic cations. In this work, single-crystal and powder X-ray diffraction and thermogravimetric-differential thermal analysis (TG-DTA) are used to verify the above compounds, meanwhile, the optical and photoelectric properties were investigated, and the optical band gap is calculated as 2.43 and 2.46 eV, respectively. Furthermore, 1 and 2 exhibited photocurrent responses with photocurrent intensities of 3.83 & mu;A/cm2 and 1.54 & mu;A/cm2, respectively. Additionally, the compounds degrade methylene blue (MB).

Automated summary

Two seleniumstannates, (1,4-dabH2)Cu1.72Ag0.28SnSe4 (1) and (1,4-dabH2)Cu2SnSe4 (2), were successfully synthesized via solvothermal method using an organic amine as the structural directing agent. The compounds exhibit similar structures and have optical band gaps of 2.43 and 2.46 eV, respectively. They also show photocurrent responses and can degrade methylene blue.