30results about How to "Abundant and cheap" patented technology

The invention relates to a method for preparing hydrogen through photoanode-photovoltaic battery coupled dual-illumination fully-photic-driven decomposition of water. Efficient decomposition of water is realized under sunlight illumination conditions by using coupling of a photoelectrocatalysis technology with a photovoltaic battery technology, adopting a water oxidation cocatalsyt modified semiconductor material as a photoanode, placing a proton reduction cocatalyst modified Si battery in an electrolyte as a photocathode, directly connecting the positive electrode of the Si battery with the anode through a lead and allowing the surface of the cathode to contact with the electrolyte. The method realizes fully photic driven decomposition of water without applied bias conditions, and the solar energy utilization efficiency STH of the method reaches 2.2% or above.

Provided are a target material for manufacturing an electrode film of a semiconductor device, methods of manufacturing the target material and manufacturing the electrode film. The target material comprises Al-RE alloy or Al—Ni-RE alloy, in which RE is a mixture of rare earth elements comprising La, Ce, Pr, and Nd.

The invention discloses modified basalt fiber reinforced scoria lightweight aggregate concrete and further provides a preparation method thereof. The basalt fiber surface is processed to generate changes in an interface structure and chemical components of fiber, so that chemical activity of the basalt fiber surface is improved, the basalt fiber surface can form a tightly-bonded interface structure with a cement base body, excellent mechanical property of the basalt fiber is given to play, and further performance of the basalt fiber reinforced scoria lightweight aggregate concrete is improved. Smoothness and chemical inertness of the basalt fiber surface are effectively improved, so that the problem that the basalt fiber and a cement base material are difficult to bond is solved. Meanwhile, the ingredients of the modified basalt fiber reinforced scoria lightweight aggregate concrete are chosen from green and environment-friendly resources which are rich in source and low in cost; furthermore, the obtained novel modified basalt fiber reinforced scoria lightweight aggregate concrete has very excellent compressive strength, breaking strength and freezing resistance.

The invention discloses a straw compounded building material and a preparation method thereof provides a novel compound building material and a preparation method thereof. The surface properties of straw can be effectively improved, and accordingly the problem that the straw and a cement base material are difficult to bond. In addition, the novel compound straw material is a green and environment-friendly resource which are rich and cheap in composition and ingredient selection, and the novel compound material having the strength properties including compression resistance, fracture resistance and freezing resistance and having very excellent thermal insulation properties can be obtained.

The invention discloses a novel alkali-activated slag and fly ash cementing material retarder and a preparation method. The method comprises the steps that a straw stem and a leaf are separated and dried; the straw stem is cut into sections and roughly crushed into 1-5mm length by a ball mill; the straw stem is uniformly mixed with silicon ash; milling is performed for 10-60min in the ball mill to form 400-1000-mesh powder to obtain the retarder. The novel alkali-activated slag and fly ash cementing material retarder is prepared by taking a straw as a main raw material; a corn straw is abundant in resource and low in price; a commonly used retarder which is high in price, complicated in production technology and non-environment-friendly is replaced; a retardation effect is obvious; in addition, the straw can exert an effect of a fiber, and improves the brittleness of the retarder. The method provides a new approach for comprehensive utilization of the straw, is simple in production technology, low in cost, green and environment-friendly, and has very significant economic and social benefits.

The invention provides a potassium sodium niobate based transparent ceramic. Na2CO3, K2CO3, Bi2O3, BaCO3 and Nb2O5 are used as the raw materials and blended according to the chemical formula of (1-x)K0.5Na0.5NbO3-xBaBiO3, wherein in the formula, x represents the mole content in a system and is larger than 0 and no larger than 0.08. A preparation method of the potassium sodium niobate based transparent ceramic comprises the steps that (1) all the raw materials are placed in a drying oven to be dried before being weighed and blended; (2) all the raw materials are subjected to ball milling with absolute ethyl alcohol as the medium after being accurately weighed; (3) ball milling products are taken out, dried and presintered; (4) the presintered ball milling products are dried after being subjected to ball milling with absolute ethyl alcohol as the medium; (5) dried powder is pressed into a round billet after being sieved; and (6) the pressed round billet is sintered to obtain the transparent ceramic. The potassium sodium niobate based transparent ceramic has the advantages that by adjusting the doping content of the BaBiO3, the potassium sodium niobate based transparent ceramic prepared through a traditional ceramic process can reach 75% in visible light transmittance.

The invention provides an Oslasodine hydrochloride preparing process for anti-cancer, asthma relieving, anti-inflammation and increasing immunity. The preparation process comprises using Solanum Nigrum L, Solanum aviculare parst and Solanum xanthocar pum Schrad, et wendl fruit or herbs as raw material, employing unique acid leaching alkali precipitation extraction method, alkaline alcohol dissolving acidic alcohol crystallization for Oslasodine hydrochloride extraction.

The invention discloses a slaughterhouse deodorant and a preparation method thereof. The slaughterhouse deodorant is prepared from the following raw materials in parts by weight: vanadium pentoxide, aluminum ash, polyacrylamide, methanol, paraffin wax, azone, thymol, urotropin, activated charcoal, pine needle oil, mineral oil, p-chlorobenzenethiol, benzoic acid, calcium oxide, zeolite, cadmium sulfide, proteinase, cellulase, pectinase, ferroferric oxide, magnesium stearate, barium oxide and a plant extracting solution. The slaughterhouse deodorant disclosed by the invention has the advantagesof simple production technology, abundant and cheap raw material sources, cheap price, no toxicity and no odor, small corrosion, good deodorization effect and long lasting time, and has a relatively strong adsorption and decomposition capability; the slaughterhouse deodorant is applicable to reasonable decomposition and removal of odors in a slaughterhouse and volatilizes a fresh scent, and can beused for a long period.

Closed cell chitin foam is provided. The closed-cell chitin foam composition does not absorb water, is biodegradable, and is mechanically characterized by a density range of 16 to 800 kg/m3, closed-cell pore sizes ranging from 50 microns to 1 mm, an elastic modulus of 3 to 175 MPa, and a tensile strength of 0.15 to 6.5 MPa. The chitin is at least 70% acetylated. In one aspect, the foam is enclosed in a shell e.g. in the form of a surfboard. Chitin foam according to this invention is fully biodegradable. The chitin foam overcomes the current problems with foams that contain polyurethane and polystyrene, and which are manufactured from petroleum-based sources. Petroleum based foams are not renewable, have an adverse impact on our environment, and pose significant health hazards to those who manufacture them. The chitin foam with its water-based manufacturing process and naturally sourced chitin, solves these problems.

The invention provides a method for catalyzing selective conversion of 2-methylfuran into 1,4-pentanediol. According to the application, the 2-methylfuran is used as a raw material, and a supported platinum-based bimetallic catalyst is used for catalyzing the hydro-conversion of the 2-methylfuran, wherein the PtNi5/MWNT catalyst is used for carrying out one-pot hydrogenation on the 2-methylfuran in an ethanol/H2O (with a volume ratio of 1.5: 2.0) solvent under the conditions of 2 MPa H2 and 120 DEG C, the conversion rate of 2-methylfuran is 98%, the yield of the 1,4-pentanediol is 69%, and the yield is superior to the yield of most catalysts reported at present. The preparation method is simple in process, acid and alkaline auxiliaries do not need to be added, raw materials are renewable, the catalyst has high activity and stability, reaction conditions are milder, energy consumption is reduced to a certain extent, the catalyst is more environmentally friendly, and the energy problem which the globe faces nowadays can be partially relieved. Therefore, the method has wide application potential in industrial production.

The invention relates to a catalyst for preparing low-carbon olefin through carbon dioxide hydrogenation, belongs to the technical field of composite materials, and particularly relates to preparation and application of a perovskite-graphite phase carbon nitride composite material. After the composite material is subjected to surface processing, a large number of hydroxyl groups and amino groups exist on the periphery of the structure, and strong interaction can be generated between the composite material and perovskite metal. The catalyst has a unique electronic structure and good chemical stability, the olefin selectivity is improved through interaction between the surface-modified carbon nitride and perovskite iron oxide, and the surface-modified carbon nitride provides a reliable scheme for preparing olefin through hydrogenation reaction.