Dic Corporation

Kaori Kawamura

Yoshiyuki Sano

Ren-Hua Jin

Jian-Jun Yuan

Masato Otsu

Minoru Tabuchi

Koichiro Matsuki

Naoto Sakurai

Masayuki Moriwaki

Yuichi Satokawa

Masafumi Uota

Provided is a molybdenum sulfide that is ribbon-shaped and particularly suitable for a hydrogen generation catalyst. Disclosed are a ribbon-shaped molybdenum sulfide, in which 50 particles as measured by observation with a scanning electron microscope (SEM) have a shape of, on average, 500 to 10000 nm in length, 10 to 1000 nm in width, and 3 to 200 nm in thickness; a method for producing the ribbon-shaped molybdenum sulfide, including: (1) heating a molybdenum oxide at a temperature of 200 to 1000&#xb0; C. in the presence of a sulfur source; or (2) heating a molybdenum oxide at a temperature of 100 to 800&#xb0; C. in the absence of a sulfur source, and then heating the molybdenum oxide at a temperature of 200 to 1000&#xb0; C. in the presence of a sulfur source; and a hydrogen generation catalyst including the ribbon-shaped molybdenum sulfide.

Molybdenum sulfide, method for producing same, and hydrogen generation catalyst

A problem is to provide a silver paste which can produce, without variation in resistivity value, a conductive silver coating film exhibiting resistivity substantially equivalent to the resistance value of bulk silver in low-temperature sintering. The problem is solved by providing a silver paste including a silver nanoparticle aqueous dispersion prepared by using a compound having a polyethyleneimine skeleton as a protective agent, a compound having a functional group reactable with nitrogen atoms in the polyethyleneimine, and at least one compound selected from the group consisting of a compound having an amine functional group and a compound having an amide functional group.

Silver paste, and conductive molded article obtained using same

Provided is a composite including copper nanoparticles or copper(I) oxide nanoparticles and a thioether-containing organic compound represented by X(OCHCHR)OCHCH(OH)CHSZ [X represents an alkyl group; Rrepresents a hydrogen atom or a methyl group; n represents an integer of 2 to 100; Ris independent between repeating units and may be the same or different; and Z represents an alkyl group, an allyl group, an aryl group, an arylalkyl group, &#x2014;R&#x2014;OH, &#x2014;R&#x2014;NHR, or &#x2014;R&#x2014;(COR)(where Rrepresents a saturated hydrocarbon group; Rrepresents a hydrogen atom, an acyl group, an alkoxycarbonyl group, or a benzyloxycarbonyl group; Rrepresents a hydroxy group, an alkyl group, or an alkoxy group; and m represents 1 to 3)]. Provided is a method for producing a composite of an organic compound and copper nanoparticles or a composite of an organic compound and copper(I) oxide nanoparticles, the method including reducing a copper compound in the presence of a thioether-containing organic compound represented by the general formula (1) above.

Composite of organic compound and copper nanoparticles, composite of organic compound and copper(I) oxide nanoparticles, and methods for producing the composites

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Sakura, Japan

Kaori Kawamura