Abstract: A particulate matter sensing device includes a screening component, a charging component, and a collecting and sensing component. The screening component separates a plurality of particulate matters from the air by inertial impaction. The charging component is used to produce a plurality of ions to combine with the particulate matters separated by the screening component, making each of the particulate matters separated by the screening component having a first electricity. The collecting and sensing component includes a collecting unit and a sensing unit electrically connected to the collecting unit, to detect the amount of charges of the particulate matters that reach the collecting unit.

Abstract: A particulate matter sensing device includes a screening component, a charging component, and a collecting and sensing component. The screening component separates a plurality of particulate matters from the air by inertial impaction. The charging component is used to produce a plurality of ions to combine with the particulate matters separated by the screening component, making each of the particulate matters separated by the screening component having a first electricity. The collecting and sensing component includes a collecting unit and a sensing unit electrically connected to the collecting unit, to detect the amount of charges of the particulate matters that reach the collecting unit.

Abstract: A water separation composite membrane is provided. The water separation composite membrane includes a carrier with a plurality of pores, wherein the carrier is made of a polymer having a repeat unit of and a selective layer disposed on the porous carrier, wherein the selective layer consists of a plurality of graphene oxide layers.

Abstract: A water separation composite membrane is provided. The water separation composite membrane includes a carrier with a plurality of pores, wherein the carrier is made of a polymer having a repeat unit of and a selective layer disposed on the porous carrier, wherein the selective layer consists of a plurality of graphene oxide layers.

Abstract: A water separation composite membrane is provided. The water separation composite membrane includes a carrier with a plurality of pores, wherein the carrier is made of a polymer having a repeat unit of and a selective layer disposed on the porous carrier, wherein the selective layer consists of a plurality of graphene oxide layers.

Abstract: The invention provides a metal porous material, a method for preparing the same, and a method for detecting nitrogen-containing compounds. The method for fabricating metal porous material includes: mixing a siloxane, a metal or metallic compound, and water, to obtain a mixture after stirring; modifying the mixture to a pH value of less than 7; subjecting the mixture to a first dry treatment to obtain a solid; after polishing the solid to obtain a powder, subjecting the powder to a second dry treatment. It should be noted that the method is free of any annealing or calcination process.

Abstract: The invention provides a method for decomposing sulfur-fluorine-containing compound and apparatus thereof. Sulfur-fluorine-containing compound is decomposed in two steps, comprising contacting the compound with a first catalyst such as a monometallic catalyst and a second catalyst such as a bimetallic catalyst, and at a low reaction temperature to produce resulting compounds capable of water-solubility. Then, the resulting compounds, namely sulfur- or fluorine-containing compounds, are removed by washing.

Abstract: A cleaning composition for treating acid gas. The cleaning composition comprises an iron-containing oxide, and an oxide comprising at least aluminum, silicon, or titanium with a mesoporous structure. A method for treating an acid gas utilizing the cleaning composition comprising contacting an acid gas with the cleaning composition for lowering the concentration of the acid gas is also disclosed.