【正文】 中文 2890 字 Preparation of Nanostructures and Photoluminescence Bi2S3 ZHANG Weixin， QIU Mo， ZHANG Junjun， YANG Zeheng， CHEN Min (School of Chemical Engineering, Hefei University of Technology, Anhui Key Laboratory of Controllable Chemical Reaction amp。 Material Chemical Engineering, Hefei 230009, China ) Abstract: Bismuth nitrate and sodium sulfide as raw material, twostep hydrothermal method was successfully prepared at 100℃ Bi2S3 orthorhombic micro ring。 Youyi bismuth nitrate and thiourea as the raw material, the use of step hydrothermal synthesized at 150℃ with Orthorhombic39。s Bi2S3 nanorods. Respectively, Xray diffraction, field emission scanning electron microscopy, transmission electron microscopy and fluorescence spectrometry and other means of final product testing phase, morphology and properties were characterized to explore the mechanism of ring formation Bi2S3 microns. The results showed that: Bi2S3 micron diameter ring 1 ~ , external diameter of ~ 2μm, the average size of about 100nm in the nanograins assembled. Bi2S3 nanorods diameter of about 125nm, a length of 1 ~ 2μm. Bi2S3 micron and nanorod Bi2S3 ring emission peak at 447nm and 470nm are located at, Bi2S3 micron emission peak position of ring Bi2S3 nanorods pared to the emission peak position was a blue shift. Key words: bismuth sulfide。 hydrothermal method。 nanostructure。 photoluminescence The performance of nanomaterials depends not only on its own structure and position, but also the size and shape and materials are closely related, and thus the size of nanomaterials, structure and morphology of control synthesis to optimize material properties, not only has important Theoretical significance but also broaden the application areas of nanomaterials, which has bee the field of synthetic chemistry and materials research focus of a front, causing researchers [1] wide interest. Because of its central ring has a very special hole and has many special properties. For example: Aizpurua other study found that the hole in the center gold ring has a strong effect of uniform magic field, which makes research in sensing and spectroscopy can be used as nanohole resonance to support or test other smaller nanostructured materials . [2] In addition, Rothman magic ring and other materials found in high density magic storage and magic random access memory also has potential practical applications. [2] The vulcanized bismuth(Bi2S3) is a kind of important semiconductor material, its band gap is a ~ evs, give or get an electric shock in the thermal, optoelectronics and electrochemistry[3 – 5] keep aspects like hydrogen,etc to have potential application recent years, Na rice the position of the structure vulcanized bismuth caused the extensive concern of the researcher. Currently, at Na rice structure the vulcanized bismuth contain a lot of wires that report, mainly have a Na rice[the 6], Na rice is good[7], Na rice necklace[8] and panlike in shape[5] and roselike in shape[9] etc. construction Li waits[5] with the chlorination bismuth is in the hydrochloric acid aqueous solution water solution ine chlorination oxidizing bismuth for forerunner body, with sulfur generation An for sulfur source, in 60℃ often press down to make from the diameter about the 30 nms, length for the Na rice of the 150~200 nms rod weave of average diameter for the thin panlike in shape vulcanized bismuth of 2 μm. The thou national prosperity waits[9] with just the right amount of laurel acis the sulfur An salt(salt of 2undecy 11dithioureidoethyl imidazoline, SUDEI) for surface live agent, take chlorination bismuth and sulfur generation Mao An as raw material, adopt melting agent thermal legal system have the roselike in shape spheroid(diameter about one μm) structure that is applied by the slablike in shape vulcanized bismuth curl have the jot the search concerning vulcanized bismuth nanotube to report example, is firm and unpromising to wait[10] take the nitric acid bismuth and the vulcanized sodium as to respond raw material, adopt water thermal law to r